A power converter system includes a first transformer winding. Two switches are operatively connected to the first power winding and ground for controlling the first transformer winding. A holdup charging circuit includes a clamp circuit connected between a first node on a first side of the first transformer winding and a second node on a second side of the first transformer winding. The clamp circuit includes a clamp diode oriented to let current flow through the clamp circuit in a direction from the first node to the second node. The clamp circuit includes a clamp capacitor in series between the clamp diode and the second node. A holdup circuit, including a holdup capacitor, is connected to a third node in the clamp circuit between the clamp diode and the clamp capacitor.
H02M 3/335 - Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
H02M 1/00 - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF - Details of apparatus for conversion
H02M 1/36 - Means for starting or stopping converters
2.
HOLDUP CAPACITOR CHARGING USING SINGLE SWITCH FORWARD CONVERTER
A power converter system includes a first transformer winding. A switch is operatively connected between the first transformer winding and ground for controlling the first transformer winding. A holdup charging circuit includes a clamp circuit connected between a first node on a first side of the first transformer winding and a second node on a second side of the first transformer winding. The clamp circuit includes a clamp diode oriented to let current flow through the clamp circuit in a direction from the first node to the second node. The clamp circuit includes a clamp capacitor in series between the clamp diode and the second node. A holdup circuit, including a holdup capacitor, is connected to a third node in the clamp circuit between the clamp diode and the clamp capacitor.
H02M 1/00 - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF - Details of apparatus for conversion
H02M 3/335 - Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
3.
HIGH-POWER AIR-COOOLED COMPRESSOR MOTOR AND LOW-POWER COOLING BOOSTER FAN MOTOR POWERED BY SINGLE INVERTER
An aircraft includes a compression system for pressurizing a cabin of the aircraft. The air compression system includes a first motor, a second motor and an inverter. The first motor compresses air at a compressor to pressurize the cabin, thereby generating heat. The second motor circulates a cooling air to cool the compressor. The inverter provides power to both the first motor and the second motor.
An eye monitoring system for distress monitoring can include an eye tracking device configured to monitor one or more of an eye position, an eye movement, and/or an eye quality of a user, and to output eye tracking data. The system can also include a distress monitoring module configured to receive the eye tracking data from the eye tracking device and to determine whether the user is in distress based on the eye tracking data (e.g., in real time). The distress monitoring module can be configured to output a distress signal if the user is determined to be in distress.
A laundry system can include an input shaft, an output actuator, and a motion converter connected between the input shaft and the output actuator. The motion converter can be configured to convert rotational motion of the input shaft to linear motion of the output actuator. The system can include a laundry agitation arrangement connected to the output actuator to be linearly actuated by the output actuator to agitate laundry.
A63B 22/02 - Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with movable endless bands
D06F 13/00 - Washing machines having receptacles, stationary for washing purposes, with agitators therein contacting the articles being washed
D06F 21/04 - Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement about a horizontal axis within an enclosing receptacle
D06F 35/00 - Washing machines, apparatus, or methods not otherwise provided for
D06F 37/04 - Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
D06F 37/22 - Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations in machines with a receptacle rotating or oscillating about a horizontal axis
A cryocooler device including a cryocooler including an input and an output, the input forming a cooling path, and a first stage that cools a working fluid in the cooling path. At least one thermal energy storage device selectively connectable to the cooling path and the cooling loop, wherein in a first operational mode of the cryocooler device where the at least one thermal energy storage device is connected to the cooling loop where the heat to be removed at the input exceeds a cooling capacity of the cryocooler device, and a second operational mode where the at least one thermal energy storage device is connected to the cooling path where the heat to be removed is less than the cooling capacity of the cryocooler and the heat is removed from the at least one thermal energy storage device.
An impeller includes a metallic inducer portion and a polymeric exducer portion connected to the metallic inducer portion. The metallic inducer portion includes an inducer hub, inducer blades attached to the inducer hub, and an inducer coupling on an end of the inducer hub. The polymeric exducer portion includes an exducer hub, exducer blades attached to the exducer hub, and an exducer coupling on an end of the exducer hub. The exducer coupling connects to the inducer coupling.
An impeller includes a hub. The hub has a first end and a second end and includes an impeller disk at the second end of the hub. The impeller disk includes a first annular protrusion extending from the impeller disk. A first pocket is in a radially outer side of the first annular protrusion. The impeller also includes a first preloading band positioned in the first pocket. The first preloading band encircles the radially outer side of the first annular protrusion. The impeller also includes blades connecting to a radially outer surface of the hub.
A heat exchanger includes a heat exchanger core including a cold side and a hot side. The cold side directs a first cooling fluid from a cold inlet to a cold outlet. The hot side directs a hot fluid from a hot inlet to a hot outlet. An inlet header coupled to the hot side of the heat exchanger core at the hot inlet includes an interior wall and an exterior wall spaced apart from the interior wall. The interior wall defines an inlet duct; the interior wall and exterior wall define a cooling channel surrounding at least a portion of the inlet duct. The inlet duct directs hot fluid though the inlet header to the hot side. The cooling channel directs a second cooling fluid through the cooling channel.
A fluid recovery system for a laundry system (e.g., of a spacecraft) can include a main line having an inlet configured to fluidly communicate with a washing volume within an agitation chamber to receive washing fluid from the agitation chamber, a vacuum source in fluid communication with the main line to provide a partial vacuum to the inlet to cause washing fluid in the washing volume to at least partially evaporate, and a condenser disposed on the main line downstream of inlet. The condenser can be configured to receive evaporated washing fluid and to condense water in the evaporated washing fluid. The system can include a separator downstream of the condenser configured to separate water and laundry effluent gas, wherein the separator includes a water recovery output configured to output water for reuse.
D06F 39/00 - LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES - Details of washing machines not specific to a single type of machines covered by groups
B64G 4/00 - Tools specially adapted for use in space
D06F 39/08 - Liquid supply or discharge arrangements
In accordance with at least one aspect of this disclosure, a waste fluid water recovery system can include a waste fluid inlet line configured to connect to a waste fluid source, the waste fluid inlet line comprising one or more treatment components configured to treat the waste fluid, a treated waste fluid outlet line configured to connect to one or more outlets, a tank having a flexible membrane dividing an internal volume of the tank into a first portion and a second portion, a first line fluidly connected to the first portion of the tank, a second line fluidly connected to the second portion of the tank, and a switching valve connected between the first line, the second line, the waste fluid inlet line, and the treated waste fluid outlet line. The switching valve can be configured to connect the first line with the waste fluid inlet line and the second line with the treated waste fluid outlet line in a first state. The switching valve can be configured to connect the first line with the treated waste fluid outlet line and the second line with the waste fluid inlet line in a second state.
A stator includes a stator hub, a plurality of stator teeth extending from stator hub that define a stator slot and at least one winding disposed in the stator slot, the winding including a cooling passage formed therein through. The cooling passage is connected to an inlet plenum and an outlet plenum. The stator can also include coil separators tint include cooling passages.
H02K 3/24 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
An environmental control system includes an environmental control system pack having a trim outlet and a primary outlet. A trim medium is output from the trim outlet and a first medium is output from the primary outlet. An inlet of a mixing manifold is connected to the primary outlet of the at least one environmental control system pack. A trim heat exchanger is connected to the trim outlet and the at least one inlet of the environmental control system pack. Within the trim heat exchanger, the trim medium is arranged in a heat exchange relationship with a second medium. From the trim heat exchanger, the second medium is provided to an inlet of the least one environmental control system pack and the trim medium is mixed with a flow output from an outlet of the mixing manifold.
F02C 6/08 - Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output providing compressed gas the gas being bled from the gas-turbine compressor
14.
HEADER GUIDING FLUID FLOW TO AND FROM COOLING CHANNELS IN A HIGH DENSITY MOTOR
A header for an electric machine that include a stator core and one or more windings that include coolant passages formed therein. The header includes an inlet to receive a coolant, an outlet though which the coolant exits the header, an inlet plenum fluidly connected to the inlet, and an outlet plenum fluidly separated from the inlet plenum and fluidly connected to the outlet. The inlet and outlet plenums each have a varying cross section that varies from a top of the header as compared to a bottom of the header.
H02K 9/20 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil wherein the cooling medium vaporises within the machine casing
H02K 3/24 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
A fuel system includes a main pump assembly. The main pump assembly has a main fuel pump connected to an input line, a recirculation pump connected to the input line, and a fuel recirculation system. A recirculation control includes a first selector valve in fluid communication with an outlet line of the recirculation pump, with a recirculation return line connected to return fuel to the input line, and with an inter-valve line. The recirculation control includes a second selector valve in fluid communication with the inter-valve line, with a back-up line connecting the second selector valve to a main fuel control, and with a cooler recirculation line connected to supply the one or more coolers.
A transportation system includes a first passageway and a second passageway arranged in a side-by-side configuration. A first propulsion system is operable to move a first capsule within the first passageway and a second propulsion system is operable to move a second capsule within the second passageway. The second propulsion system is integrally formed with the first propulsion system.
A drive mechanism for use with an electric motor and a clutch mechanism includes a rotor shaft, a disconnect shaft, a disconnect mechanism, at least one damper element, and a part of a clutch. The rotor shaft and disconnect shaft have a longitudinal axis A. The disconnect shaft transmits torque between the rotor shaft and the clutch mechanism. The disconnect shaft comprises the part of the clutch and a shaft element. The disconnect mechanism is configured to move the disconnect shaft between an engaged position in which the part of the clutch is engaged with the clutch mechanism and a disengaged position in which the part of the clutch is not engaged with the clutch mechanism. The at least one damper element is configured to absorb at least part of any kinetic energy introduced into the disconnect shaft due to movement of the disconnect shaft.
B64D 35/08 - Transmitting power from power plant to propellers or rotors; Arrangements of transmissions characterised by the transmission being driven by a plurality of power plants
B64D 27/24 - Aircraft characterised by the type or position of power plant using steam, electricity, or spring force
A drive mechanism for use with an electric motor and a clutch mechanism The drive mechanism comprises a rotor shaft, a disconnect shaft, a disconnect mechanism, at least one damper element, a part of the clutch, and a lubrication system. The rotor shaft and disconnect shaft have a longitudinal axis A. The disconnect shaft transmits torque between the rotor shaft and the clutch mechanism. The disconnect shaft comprises the part of the clutch and a shaft element. The disconnect mechanism is configured to move the disconnect shaft between an engaged position in which the part of the clutch is engaged with the clutch mechanism and a disengaged position in which the part of the clutch is not engaged with the clutch mechanism. The at least one damper element is configured to absorb at least part of any kinetic energy introduced into the disconnect shaft.
B64D 35/08 - Transmitting power from power plant to propellers or rotors; Arrangements of transmissions characterised by the transmission being driven by a plurality of power plants
B64D 33/08 - Arrangement in aircraft of power plant parts or auxiliaries not otherwise provided for of power plant cooling systems
A method for providing inert gas to a protected space. The method includes: providing air having a pressure greater than or equal to 2 atmospheres absolute pressure to a chemical inert gas generator; producing an inert gas in the chemical inert gas generator; providing the inert gas to a condenser at an elevated pressure; reducing the water content of the inert gas in the condenser; and providing the dried inert gas to a protected space.
B01D 53/32 - Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by electrical effects other than those provided for in group
An assembly of a main stage and exciter stage of an electric machine includes a main stage including a main stage winding, an exciter stage including an exciter winding, and a bus bar assembly to electrically connect the main stage winding to the exciter stage winding. The bus bar assembly includes a terminal post installed to the main stage and extending at least partially through the exciter stage. The main stage winding electrically is connected to the terminal post. A power band contact is installed to the terminal post and is electrically connected thereto. The exciter winding is electrically connected to the power band contact.
Disclosed is a heat exchanger having: an inlet manifold configured to receive a cooling fluid; a reservoir; first and second condenser arms connected between and that respectively fluidly couple the inlet manifold to the reservoir, so that fluid received at the inlet manifold travels from the inlet manifold into the reservoir; and an outlet pump having a pump inlet port coupled to the reservoir and having a pump outlet port, wherein the inlet manifold, the reservoir, the first and second condensers, in combination, form a continuous shape.
H02K 9/20 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil wherein the cooling medium vaporises within the machine casing
H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
An environmental control system of a vehicle includes a first inlet configured to receive a flow of a first medium, a second inlet configured to receive a flow of a second medium, and a thermodynamic device including a compressor and at least one turbine operably coupled by a shaft. The compressor and the at least one turbine are fluidly coupled to the first inlet. The compressor and the at least one turbine are arranged in parallel relative to the flow of the first medium such that a first portion of the first medium is receivable at the compressor and a second portion of the first medium is receivable at the at least one turbine.
B64D 13/08 - Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space the air being conditioned the air being heated or cooled
A motor drive system includes a MUX circuit, a DC voltage scaling circuit, a fault detection circuit, an ADC, and an FPGA. The MUX circuit selectively establishes a MUX input signal path and a MUX output signal path. The DC voltage scaling circuit measures a DC link voltage. The fault detection circuit receives the output DC link voltage and outputs one of a normal operation signal or a fault signal in response to comparing the DC link voltage to one or both of a U/V reference voltage and an O/V reference voltage. The ADC converts one or more input analog voltages into respective corresponding output digital voltages. The FPGA is in signal communication with the ADC output (ADCOUT) and the MUX circuit, and is configured to control the motor drive system based on a comparison between one or more of the output digital voltages.
A position sensing system includes a linear variable differential transformer (LVDT) to provide a first output voltage and a second output voltage. The position sensing system also includes two precision rectifiers. Each of the precision rectifiers comprises only operational amplifiers and resistors and obtains the first output voltage or the second output voltage as an input and to provide a full-wave rectified output.
G01D 5/22 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils
G01B 7/00 - Measuring arrangements characterised by the use of electric or magnetic techniques
A multi-three-phase motor drive system includes a power distribution network, a motor drive unit, and a motor network. The power distribution network includes a partitioned direct current (DC) link connected between a positive voltage rail and a negative voltage rail. A connection between the positive voltage rail and a mid-point node defines an upper portion of the partitioned DC link and a connection between negative voltage rail and the mid-point node defines a lower portion of the partitioned DC link. The motor drive unit includes a plurality of inverter units, and the motor network includes a plurality of motor windings which are each connected to a respective inverter unit. A first group of the inverter units is connected in parallel with the upper portion of the portioned DC link, and a second group of the inverter units is connected in parallel with the lower portion of the partitioned DC link.
H02P 27/06 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
H02K 11/33 - Drive circuits, e.g. power electronics
A heat exchanger having: an inlet header having inlet tubes stacked against the first side of the heat exchanger; an outlet header having outlet tubes stacked against the second side of the heat exchanger, first inlet and outlet tubes have a same length as each other, second inlet and outlet tubes have the same length as each other and are longer than the first inlet and outlet tubes, and third inlet and outlet tubes have a same length as each other and are longer than the second inlet and outlet tubes; core channels extend from the first side to the second side of the heat exchanger, the core channels connect the inlet tubes to the outlet tubes such that: the first inlet tube and third outlet tube are connected; the second inlet tube and second outlet tube are connected; and the third inlet tube and first outlet tube are connected.
A heat exchanger having: front and aft ends; heat exchanger cores in an annular loop that define circumferential gaps between adjacent pairs of the cores, the cores, individually or as axially aligned sets, extend from the front to aft ends and have facing inlet sides and circumferentially facing outlet sides configured such that the inlet sides and the outlet sides from the adjacent pairs of the cores face into the same circumferential gaps; and core guide vanes disposed in the circumferential gaps, the core guide vanes have an aft portion that extends from the front end to the aft end of the heat exchanger, wherein: at the front end the heat exchanger, the core guide vanes are closer to the outlet side of the cores; and at the aft end the heat exchanger, the core guide vanes are closer to the inlet sides of the cores.
F28D 1/053 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or mo with the heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
F02C 7/10 - Heating air supply before combustion, e.g. by exhaust gases by means of regenerative heat-exchangers
F28D 21/00 - Heat-exchange apparatus not covered by any of the groups
28.
MOTOR DRIVE DIRECT CURRENT LINK VOLTAGE MEASUREMENT RESOLUTION IMPROVEMENT WITH FAULT DETECTION
A motor drive system includes a MUX circuit, a DC voltage scaling circuit, a fault detection circuit, an ADC, and an FPGA. The MUX circuit selectively establishes a MUX input signal path and a MUX output signal path. The DC voltage scaling circuit measures a DC link voltage. The fault detection circuit receives the output DC link voltage and outputs one of a normal operation signal or a fault signal in response to comparing the DC link voltage to one or both of a U/V reference voltage and an O/V reference voltage. The ADC converts one or more input analog voltages into respective corresponding output digital voltages. The FPGA is in signal communication with the ADC output (ADCouT) and the MUX circuit, and is configured to control the motor drive system based on a comparison between one or more of the output digital voltages.
H02P 29/00 - Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
H02H 7/09 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from norm for dynamo-electric motors against phase interruption
H03K 19/177 - Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using elementary logic circuits as components arranged in matrix form
A position sensing system includes a linear variable differential transformer (LVDT) to provide a first output voltage and a second output voltage. The position sensing system also includes two precision rectifiers. Each of the precision rectifiers comprises only operational amplifiers and resistors and obtains the first output voltage or the second output voltage as an input and to provide a full-wave rectified output.
A glove for human work in extreme environments includes a body formed to substantially surround a human hand, at least one sensor provided in connection with the body, positioned to detect an extent of movement of a respective joint of the human hand, a controller provided in connection with the glove, adapted and configured to translate a signal generated by the sensor into a control signal, and to transmit the control signal to a receiver housed within a spacesuit informatics system.
A handheld applicator for delivery of post-treatment coating following application of a conversion coating includes a first vessel extending longitudinally and containing SOCOSURF PACS™ solution, a second vessel extending longitudinally and containing hydrogen peroxide, a pH indicator contained in one of the first or second vessels, a mixing region configured to combine the SOCOSURF PACS™ solution, hydrogen peroxide, and pH indicator.
B05C 11/10 - Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
B05C 1/00 - Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
B05C 17/005 - Hand tools or apparatus using hand-held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material through an outlet orifice by pressure
A variable diffuser includes a backing plate, a shroud, a diffuser body between the backing plate and the shroud, a plurality of passages through the diffuser body, and a valve adjacent to the shroud and the diffuser body. The valve movably occludes a portion of the plurality of passages.
The present disclosure provides air cooling systems and methods for propulsion systems (e.g., aviation or aerospace propulsion systems). More particularly, the present disclosure provides integrated air cooling systems and methods utilizing air cycle machine cooling for hybrid-electric aircraft or aerospace propulsion systems or the like. The present disclosure provides integrated air cycle machine cooling into the hybrid propulsion system (e.g., into the wing-mounted hybrid propulsion system). As such, the air cooling systems and methods of the present disclosure can minimize weight while improving electric motor/generator cooling.
F02C 6/20 - Adaptations of gas-turbine plants for driving vehicles
F02C 3/06 - Gas-turbine plants characterised by the use of combustion products as the working fluid having a turbine driving a compressor the compressor comprising only axial stages
A circuit mounting assembly can include a circuit board, a chassis, a sheet of thermally conductive dielectric material, and one or more fasteners configured to compress the sheet between the circuit board and the chassis to provide vibration isolation and electrical isolation between the chassis and the circuit board, and to provide thermal conduction between the chassis and the circuit board.
Cooling systems include a cold sink thermally coupled to a heat load, a separator configured to separate liquid and vapor portions of a working fluid, and a cooling cycle having a vapor loop and a liquid loop, the cooling cycle having the working fluid configured to pass through both the vapor loop and the liquid loop. The vapor loop includes the separator, a compressor, a condenser, and a valve. A vapor form of the working fluid flows from the separator into the compressor, and the working fluid then flows to the condenser, and then through the valve, and returned to the separator. The liquid loop includes the cold sink, the separator, and a pump. A liquid form of the working fluid flows from the separator into the pump and the working fluid is increased in pressure and supplied to the cold sink and then returned to the separator.
Cooling systems include a cold sink having a number of heat load cooling paths and a heat load associated with each cooling path. An inlet is configured to supply a cooling fluid into the cold sink and an outlet is configured to receive the cooling fluid after passing through the plurality of heat load cooling paths of the cold sink. A pressure regulating element is arranged along each cooling path, each pressure regulating element arranged between the inlet and the heat load along each cooling path and configured to cause a pressure drop in the cooling fluid prior to passing the cooling fluid to each heat load. The pressure drop caused by each pressure regulating element is the same and is a pressure drop greater than a maximum pressure drop across each heat load of a system without such pressure regulating elements.
A switch control system includes a first voltage source configured to output a first source voltage on a first voltage line. The system includes a first gate driver, a second gate driver, a third gate driver, and a fourth gate driver. Each of the gate drivers includes shoot through protection (STP) configured to prevent a first switch and a second switch of the system from ever both being closed at once thereby preventing shoot voltages from a DC bus to ground through the first and second switches.
H03K 17/56 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices
H02P 29/00 - Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
A voltage converter for an aircraft electrical system includes an input power line configured to receive input electrical power, an output power line configured to supply output electrical power to aircraft loads, conversion circuitry, and a controller. The conversion circuitry is configured to convert the input electrical power to supply the output electrical power based on one or more control parameters. The controller is configured to receive data relating to the aircraft loads and modify at least one control parameter based on the data.
A closure assembly including a retaining cover, a first catch plate sitting partially within the retaining cover, a second catch plate sitting partially within the retaining cover opposite the first catch plate and spaced apart from the first catch plate, and a closure pressing against the first catch plate and pressing against the second catch plate.
A method of forming a coated composite article comprises treating a surface of a composite article to form a treated composite article having a plurality of voids in the surface, applying an expansive interface coating to the surface and plurality of voids of the treated composite article to form an intermediate composite article, the expansive interface coating comprising an expansive alloy, and applying a metallic coating to the intermediate composite article using one of electroless plating, electrolytic plating, and thermal spraying. Each void of at least a subset of the plurality of voids comprises an opening at the surface that is narrower than an inward dimension of the respective void.
C23C 18/16 - Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, i.e. electroless plating
C23C 18/32 - Coating with one of iron, cobalt or nickel; Coating with mixtures of phosphorus or boron with one of these metals
C25D 3/56 - Electroplating; Baths therefor from solutions of alloys
A method of forming a circuit board assembly includes receiving a flat no-lead package. The package includes: a housing having a first side and second side; a circuit disposed within the housing; and an exposed thermal belly pad that is thermally coupled to the circuit and passes at least partially through the first side such that it can be exposed to an environment outside of the housing. The method also includes attaching the second side of the flat no-lead package to a first side of a printed circuit board (PCB) such that the exposed thermal belly pad is opposite the first side of the PCB.
H05K 1/18 - Printed circuits structurally associated with non-printed electric components
H01L 23/31 - Encapsulation, e.g. encapsulating layers, coatings characterised by the arrangement
H01L 23/34 - Arrangements for cooling, heating, ventilating or temperature compensation
H01L 23/367 - Cooling facilitated by shape of device
H05K 3/32 - Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
A valve assembly includes a first sleeve defining a piston bore therein. A second sleeve defines a piston bore therein. The piston bore of the first sleeve and the piston bore of the second sleeve are axially aligned. A piston is slidingly engaged in the piston bores of the first and second sleeves. A seal carrier with a plurality of pieces is axially between the first sleeve and the second sleeve. The plurality of pieces of the multi-piece seal carrier are circumferentially spaced apart from one another.
F16K 27/04 - Construction of housings; Use of materials therefor of sliding valves
F16K 11/07 - Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves; Arrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only sliding valves with linearly sliding closure members with cylindrical slides
43.
REGENERATION USING LIQUID LOOP OF ENVIRONMENTAL CONTROL SYSTEM
An environmental control system includes an inlet configured to receive a medium and a compressing device fluidly connected to the inlet. The compressing device includes a compressor operably coupled to a turbine. An outlet of the compressor is fluidly connected to an inlet of the turbine such that the medium is provided to the compressor and the turbine in series. At least one air-liquid heat exchanger is arranged in fluid communication with the outlet of the compressor and the inlet of the turbine. The at least one air-liquid heat exchanger is also connected to a liquid loop containing a liquid. At least one air-liquid regeneration heat exchanger is fluidly connected to the liquid loop at a location upstream from the at least one air-liquid heat exchanger.
F25B 9/00 - Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
B64D 13/08 - Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space the air being conditioned the air being heated or cooled
F25B 9/06 - Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point using expanders
44.
ENVIRONMENTAL CONTROL SYSTEM WITH LOW INLET PRESSURE
An environmental control system of a vehicle includes an inlet for receiving a medium, an outlet for delivering a conditioned form of the medium to a load, a primary heat exchanger fluidly coupled to the inlet and a secondary heat exchanger. A thermodynamic device is fluidly coupled to the primary heat exchanger and the secondary heat exchanger. A first bypass conduit has a first bypass inlet arranged upstream from the primary heat exchanger and a first bypass outlet arranged upstream from the secondary heat exchanger. A first bypass valve is operable to control a flow of medium through the first bypass conduit. During operation in a first mode, the medium is configured to flow through the primary heat exchanger and the secondary heat exchanger in series. During operation in a second mode, the medium is configured to flow through the primary heat exchanger and the secondary heat exchanger in parallel.
B64D 13/08 - Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space the air being conditioned the air being heated or cooled
A drive mechanism for an electric propulsion system that comprises an electric machine is disclosed. The drive mechanism comprises a drive shaft with a longitudinal axis A, an engagement means, a disconnect mechanism, and an overrunning clutch. The engagement means comprises a drive shaft engagement element and an electric machine engagement element. The drive shaft engagement element comprises a first and second shaft gear ring, and each shaft gear ring is supported on the drive shaft. Each shaft gear ring comprises a plurality of gear teeth which are circumferentially disposed around the drive shaft, and the gear teeth extend radially outward from the drive shaft.
F16D 47/04 - Systems of clutches, or clutches and couplings, comprising devices of types grouped under at least two of the following sets of groups: ; ; ; ; of which at least one is a freewheel
F16D 27/118 - Magnetically-actuated clutches; Control or electric circuits therefor with an electromagnet not rotating with a clutching member, i.e. without collecting rings with interengaging jaws or gear teeth
F16D 41/07 - Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by pivoting or rocking, e.g. sprags between two cylindrical surfaces
A drive mechanism for an electric propulsion system that comprises an electric machine is disclosed. The drive mechanism comprises a drive shaft with a longitudinal axis A, an engagement means, and a disconnect mechanism. The engagement means comprises a drive shaft engagement element and an electric machine engagement element. The drive engagement element comprises a first and second shaft gear ring, and each shaft gear ring is supported on the drive shaft. Each shaft gear ring comprises a plurality of gear teeth which are circumferentially disposed around the drive shaft, and the gear teeth extend radially outward from the drive shaft.
F16D 47/02 - Systems of clutches, or clutches and couplings, comprising devices of types grouped under at least two of the following sets of groups: ; ; ; ; of which at least one is a coupling
F16D 27/118 - Magnetically-actuated clutches; Control or electric circuits therefor with an electromagnet not rotating with a clutching member, i.e. without collecting rings with interengaging jaws or gear teeth
F16D 41/07 - Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by pivoting or rocking, e.g. sprags between two cylindrical surfaces
An electronic assembly includes one or more electronic components and an enclosure in which the one or more electronic components are located. The enclosure includes a vertically top surface, a vertically bottom surface, and a plurality of side portions extending between the top surface and the bottom surface. A cooling arrangement for thermal management of the one or more electronic components includes a cooling airflow inlet to admit a cooling airflow into the enclosure, a cooling airflow outlet to exhaust the cooling airflow from the enclosure, and one or more cooling pathways between the cooling airflow inlet and the cooling airflow outlet. The cooling airflow inlet is downward facing toward the vertically bottom surface such that the cooling airflow flows into the cooling airflow inlet an upward direction toward the vertically top surface.
An electronic assembly includes one or more electronic components and an enclosure in which the one or more electronic components are located. The enclosure includes a vertically top surface, a vertically bottom surface, and a plurality of side portions extending between the top surface and the bottom surface. A cooling arrangement for thermal management of the one or more electronic components includes a cooling airflow inlet to admit a cooling airflow into the enclosure, a cooling airflow outlet to exhaust the cooling airflow from the enclosure, and one or more cooling pathways between the cooling airflow inlet and the cooling airflow outlet. The cooling airflow outlet is downward facing toward the vertically bottom surface such that the cooling airflow flows out of the cooling airflow outlet a downward direction toward the vertically bottom surface.
An electronic assembly includes one or more electronic components, and an enclosure in which the one or more electronic components are located. The enclosure includes a vertically top surface, a vertically bottom surface, and a plurality of side portions extending between the top surface and the bottom surface. A cooling arrangement for thermal management of the one or more electronic components includes a cooling airflow inlet to admit a cooling airflow into the enclosure, a cooling airflow outlet to exhaust the cooling airflow from the enclosure, and one or more cooling pathways between the cooling airflow inlet and the cooling airflow outlet. One or more removable covers are positioned over the cooling airflow inlet to allow for airflow ingress into the cooling airflow inlet, while preventing impingement of debris into the cooling airflow inlet.
A system includes an injector including a scheduling valve assembly and a nozzle in fluid communication with the valve assembly. The scheduling valve assembly is configured for regulation of flow from an inlet of the injector to the nozzle. The injector includes one fluid circuit between the inlet of the injector and a respective outlet of the nozzle. A solenoid valve is connected in fluid communication with the scheduling valve assembly. The solenoid valve is configured to adjust position of a hydromechanical valve spool of the valve assembly.
A fuel injector for a turbine engine includes a fuel scheduling valve configured for regulation of fuel flow from a fuel inlet, in response to fuel pressure received at the fuel inlet. Primary, secondary and auxiliary fuel circuits receive fuel from the scheduling valve, and an electrically-controlled valve is provided in fluid communication with the auxiliary circuit, which electrically-controlled valve is adapted and configured to actively control fuel through the auxiliary circuit in response to a control signal.
In accordance with at least one aspect of this disclosure, a system, includes a fuel line defining a fuel inlet and a fuel outlet, configured to provide fuel from a fuel tank to an engine. A boost pump, including a boost impeller, is disposed in the fuel line configured to drive fuel from the fuel inlet to the fuel outlet and operatively connected to the boost pump via a drive shaft. The system includes a fluid line defining a fluid inlet and a fluid outlet, configured to provide fluid from a fluid source to a fluid destination. A fluid turbine is disposed in the fluid line configured to alter a pressure of the fuel line between the fuel inlet and the fuel outlet.
A snubber circuit to mitigate voltage overshoot in a power train for driving a motor, the snubber circuit configured to be connected to the motor terminal between a transmission line from a power supply and converter and a motor. The snubber circuit includes a rectifier, a capacitor connected across an output of the rectifier and a load connected across the capacitor. The capacitor is rated to charge to a predetermined link voltage and wherein an input voltage to the rectifier that exceeds the link voltage causes the voltage at the motor terminal to clamp to the link voltage and for excess energy from the input voltage to be stored in the link capacitor and dissipated by the load.
H02H 7/08 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from norm for dynamo-electric motors
A containment structure for a rotor includes a shroud and a shroud reinforcement. The shroud is coaxial with and partially surrounds the rotor and includes a tubular section, a transition section, and a flange section. The tubular section extends axially past a first side of the rotor. The transition section connects to the tubular section and is adjacent to a curved side of the rotor. The flange section connects to the transition section opposite the tubular section. The flange section extends radially past a radially outer side of the rotor. The shroud reinforcement is connected to a radially outer surface of the transition section. The shroud reinforcement encloses the transition section and includes a support scaffold and a reinforcing material. The support scaffold includes a series of geometric retaining features encircling a radially outer surface of the transition section. The reinforcing material couples to the support scaffold and restricts shroud radial expansion.
F01D 21/04 - Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for responsive to undesired position of rotor relative to stator, e.g. indicating such position
F01D 25/00 - Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
F01D 25/24 - Casings; Casing parts, e.g. diaphragms, casing fastenings
55.
MEMBRANE BUNDLE FOR FUEL DEOXYGENATION WITH ENHANCED DURABILITY
A method of forming a degassing system includes the step of forming a bundle of hollow tube membrane members by wrapping hollow tube membrane members to form the bundle at a temperature above 100° F. (38° C.). Another method of forming a degassing system includes the step of the inserting bundle into an outer canister at a temperature above 100° F. (38° C.). A fuel supply system made by these methods is also disclosed.
A fuel injector for a turbine engine includes a fuel scheduling valve configured for regulation of fuel flow from a fuel inlet, in response to fuel pressure received at the fuel inlet. Primary, secondary and auxiliary fuel circuits receive fuel from the scheduling valve, and an electrically-controlled valve is provided in fluid communication with the auxiliary circuit, which electrically-controlled valve is adapted and configured to actively control fuel through the auxiliary circuit in response to a control signal. The auxiliary fuel circuit joins with the secondary fuel circuit for delivery to a fuel nozzle.
A fuel injector for a turbine engine includes a fuel scheduling valve configured for regulation of fuel flow from a fuel inlet in response to fuel pressure received at the fuel inlet. Primary and secondary fuel circuits receive fuel from the scheduling valve, and an electrically-controlled valve is provided in fluid communication with the primary circuit, adapted and configured to actively control fuel through the primary circuit in response to a control signal.
A system includes an injector having a scheduling valve assembly and a nozzle in fluid communication with the valve assembly. The scheduling valve assembly is configured for regulation of flow from an inlet of the injector to the nozzle. The injector includes two fluid circuits between the inlet of the injector and two respective outlets of the nozzle for staged flow output from the nozzle. A first one of the two fluid circuits is a primary circuit, and a second one of the two fluid circuits is a secondary circuit. A solenoid valve is connected in fluid communication with the scheduling valve assembly, wherein the solenoid valve is configured to adjust position of a hydromechanical valve spool of the valve assembly.
F16K 31/06 - Operating means; Releasing devices magnetic using a magnet
F02C 7/232 - Fuel valves; Draining valves or systems
F16K 31/04 - Operating means; Releasing devices magnetic using a motor
F16K 31/42 - Operating means; Releasing devices actuated by fluid by means of electrically-actuated members in the supply or discharge conduits of the fluid motor
A motor assembly including a housing, a first rotor (R1, R1′) and a second rotor (R2, R2′) provided in the housing. The first rotor (R1, R1′) is configured to drive a first output shaft, and the second rotor is configured to drive a second output shaft.
An annular water removal system (AWRS) for an air cycle environmental control system (ECS) includes a line replaceable unit (LRU) configured to output air flow, and a water collector coupled to the LRU. The water collector includes an upper portion and a lower portion. The upper portion includes a coalescing unit having a collector inlet to receive the air flow and configured to coalesce moisture from the air flow output from the LRU. The lower portion includes a collection unit in fluid communication with the coalescing unit. The collection unit is configured to collect the moisture coalesced by the coalescing unit.
B01D 45/16 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream
B01D 45/06 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by reversal of direction of flow
B64D 13/06 - Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space the air being conditioned
Embodiments have two approaches as follows: (1) Embedded PCB-based fabrication and (2) PCB assembly-based fabrication. An embedded printed circuit board (PCB) type approach involves the creation of a space of coolant direct interconnection, using immersion cooling to link on any type of power semiconductor device hot spots to convectively and evaporatively cool directly. This means fabricating PCB embedded channels, to utilize the microgap between die and PCB as the cooling channel. A printed circuit board (PCB) assembly embodiment includes a PCB having at least one heat generating component. A lid is mounted to the PCB, wherein the lid defines a cooling path therein extending in a coolant flow direction from an inlet end of the cooling path to an outlet end of the cooling path.
H01L 23/44 - Arrangements for cooling, heating, ventilating or temperature compensation the complete device being wholly immersed in a fluid other than air
H01L 23/473 - Arrangements for cooling, heating, ventilating or temperature compensation involving the transfer of heat by flowing fluids by flowing liquids
H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
An assembly for use in an aircraft includes a housing having an inlet and an outlet and a flow path for an airflow extends between the inlet and the outlet. The assembly additionally includes a rotatable portion including a rotor mounted within the housing between the inlet and the outlet along the flow path. The rotor has a body including a first side facing the inlet, a second opposite side, and a plurality of impeller blades protruding from the first side. An axial flux electric motor includes a motor rotor having at least one first flux element and a motor stator. The at least one first flux element is integrated into the rotatable portion and the motor stator is remote from the flow path.
A one-way speed limiter includes a first housing including an inner surface. defining a speed limiter receiving zone. A second housing includes a flange and a second wall including an inner surface portion that includes a stop feature. A ball housing including a ball member is rotatably supported in the speed limiter receiving zone. The ball member selectively engages the stop feature. A friction clutch is disposed between the ball housing and the first housing. The friction clutch selectively retards rotation of the ball housing. A motor shaft is selectively rotatably connected to the ball housing. The motor shaft including a first end supported at the ball housing and a second end. The motor shaft is rotatable relative to the ball housing in a first direction and selectively rotatably constrained relative to the ball housing in a second direction to selectively engage the friction clutch.
E05F 15/614 - Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by a motor acting directly on the wing pivot axis
A proportional integrator for control of a motor drive arranged to be connected in parallel with one or more other motor drives to drive a common load. The proportional integrator includes means to receive an input command signal and to compare with a local measured signal from the motor drive and to output a local control signal for that motor drive, further comprising a global input signal indicative of the behaviour of the one or more other motor drives, the global input signal being incorporated into the proportional integral function with the input command signal and the local measured signal to provide the local control signal.
H02P 21/00 - Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
H02P 21/22 - Current control, e.g. using a current control loop
H02P 27/06 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
65.
ELECTRICAL POWER SYSTEM INCLUDING ENERGY STORAGE MODULES AND SHARED SYSTEM CONTROLLER
An example electrical power system includes a bus current controller configured to adjust a direct current (DC) provided on a DC bus, and a plurality of energy storage modules (ESMs). Each ESM includes at least one energy storage device, and includes a DC/DC converter configured to control charging of the at least one energy storage device from the DC bus and discharging of the at least one energy storage device onto the DC bus. A shared system controller is configured to control the bus current controller and the plurality of DC/DC converters. A method of controlling an electrical power system is also disclosed.
B60L 50/15 - Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines with additional electric power supply
B60L 53/20 - Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by converters located in the vehicle
H02M 3/06 - Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
H03K 3/45 - Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of non-linear magnetic or dielectric devices
An air cycle machine for use in environmental control system of an aircraft includes a first wheel having a rotatable portion and a second wheel operably coupled to the rotatable portion of the first wheel. An axial flux electric motor includes a motor rotor having at least one first flux element and a motor stator including at least one second flux element. The at least one first flux element is integrated into the rotatable portion of the first wheel.
A one-way speed limiter includes a first housing including an inner surface. defining a speed limiter receiving zone. A second housing includes a flange and a second wall including an inner surface portion that includes a stop feature. A ball housing including a ball member is rotatably supported in the speed limiter receiving zone. The ball member selectively engages the stop feature. A friction clutch is disposed between the ball housing and the first housing. The friction clutch selectively retards rotation of the ball housing. A motor shaft is selectively rotatably connected to the ball housing. The motor shaft including a first end supported at the ball housing and a second end. The motor shaft is rotatable relative to the ball housing in a first direction and selectively rotatably constrained relative to the ball housing in a second direction to selectively engage the friction clutch.
E05F 15/622 - Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by push-pull mechanisms using screw-and-nut mechanisms
In accordance with at least one aspect of this disclosure, a system includes, a first moveable member disposed in a first chamber configured to move between a first position and a second position of the first moveable member to allow or prevent fluid from passing from an inlet of the first chamber to an outlet of the first chamber. A second moveable member is disposed in a second chamber configured to move between a first position and a second position of the second moveable member to allow or prevent fluid from entering a biasing chamber, the second chamber being fluidly connected to the first chamber.
F16K 31/163 - Operating means; Releasing devices actuated by fluid with a mechanism, other than pulling- or pushing-rod, between fluid motor and closure member the fluid acting on a piston
F16K 15/06 - Check valves with guided rigid valve members with guided stems
F16K 15/18 - Check valves with actuating mechanism; Combined check valves and actuated valves
69.
AUXILIARY POWER GENERATION AND COOLING SYSTEMS ON LIQUID HYDROGEN FUELED AIRCRAFT
A hydrogen fueled power system of a vehicle includes a liquid hydrogen fuel source having a volume of liquid hydrogen fuel, and a thermal engine configured to expand the liquid hydrogen fuel into gaseous form via interaction between a heated first portion of the hydrogen fuel and a second portion of the hydrogen fuel. A heat exchanger is located between the liquid hydrogen source and the thermal engine. The heat exchanger is configured to heat the first portion of the hydrogen fuel via thermal energy exchange with a relatively warm fluid. A power generator is positioned fluidly downstream of the thermal engine. The power generator utilizes exhaust from the thermal engine to generate electrical or mechanical power.
H01M 8/04111 - Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants using a compressor turbine assembly
H01M 8/04082 - Arrangements for control of reactant parameters, e.g. pressure or concentration
A circuit can include a closed loop bus line having a plurality of connections. The circuit can include a plurality of integrated circuits disposed on the close loop bus line at a respective connection of the plurality of connections. One or more of the integrated circuits can be configured to drive a signal on the closed loop bus line. The closed loop bus line can be configured to prevent signal reflection. For example, in certain embodiments, there are no termination resistors at any of the terminations to reduce size, weight, and/or part count of the circuit.
In accordance with at least one aspect of this disclosure, a power system for a vehicle is disclosed. The system can include, one or more power distribution sources configured to supply electrical power to one or more power districts. One or more power conversion devices can be housed within a respective power district. In embodiments, the power district can be configured to allow for managing a draw by a respective one or more loads within the respective power district. The one or more power conversion devices can be configured to receive electrical power from one or more of the one or more power distribution sources, convert the electrical power to a secondary form, and then the converted electrical power to the one or more loads within the respective power district. In embodiments, a logic module can be operatively connected to the one or more power districts, configured to control at least a load draw.
B60L 50/60 - Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
B60L 50/64 - Constructional details of batteries specially adapted for electric vehicles
B60W 10/08 - Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
H02J 3/32 - Arrangements for balancing the load in a network by storage of energy using batteries with converting means
A compressor includes a housing and a mixed-flow rotor mounted within the housing. The mixed-flow rotor includes a blade and a rotor hub with an interior flow passage. The blade includes an internal channel between a pressure surface and a suction surface of the blade. The internal channel extends radially within the blade and is in fluidic communication with the interior flow passage. The blade also includes a plurality of air outlets formed on the blade proximate a leading edge of the blade. The plurality of air outlets extends into the blade to fluidically connect with the internal channel.
A power system includes a field effect transistor (FET) with a first terminal, a gate terminal, and a third terminal. A Zener diode is connected in series between the first terminal of the FET and the gate terminal of the FET. The Zener diode is oriented to allow current through the Zener diode only if its voltage difference is at or over the Zener voltage of the Zener diode. A capacitor is connected in parallel with the Zener diode. The capacitor is configured to raise gate drive current of the FET during a rising edge of a lightning transient and thereby reduce voltage drop across the FET faster than the Zener diode can do on its own.
H03K 17/082 - Modifications for protecting switching circuit against overcurrent or overvoltage by feedback from the output to the control circuit
G05F 1/569 - Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor for protection
H02H 9/02 - Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
An integrally bladed rotor includes a rotor disk, rotor blade, internal channel and air outlets. The rotor blade includes a body defined by a pressure surface and suction surface between a leading edge and a trailing edge. The internal channel extends radially from the rotor disk internally within the body of the rotor blade. The air outlets are formed proximate the leading edge and extend within the body of the rotor blade to the internal channel.
Electric motors and stators thereof are described. The stators of the electric motors include a first header, a second header fluidly connected to the first header, a plurality of windings fluidly connected to the first header and the second header to receive a cooling fluid passing from the first header to the second header along one or more flow channels, and one or more phase-change material elements arranged to thermally interact with at least one of the first header, the second header, the one or more flow channels, and the plurality of windings.
H02K 9/20 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil wherein the cooling medium vaporises within the machine casing
H02K 3/24 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
H02K 9/22 - Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
A cooling system of a vehicle includes an inlet for receiving a medium. A turbine is fluidly connected to the inlet. A coupling mechanism is operably coupled to the turbine by a shaft. The medium is ram air.
B64D 13/08 - Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space the air being conditioned the air being heated or cooled
A heat exchanger includes a heat exchanger core, a pressure housing, and a flex beam. The pressure housing at least partially defines a core chamber. The flex beam extends between and connects the heat exchanger core and the pressure housing such that the heat exchanger core is suspended away from the pressure housing within the core chamber by the flex beam. The flex beam includes a core end connected to the heat exchanger core and a housing end spaced along the flex beam from the core end and connected to the pressure housing.
The present disclosure provides absorption refrigeration systems, assemblies and methods utilizing waste heat for climate control and/or cooling (e.g., electric systems cooling; electronics cooling; motor cooling; generator cooling; oil cooling; etc.). More particularly, the present disclosure provides absorption refrigeration systems, assemblies and methods utilizing waste heat (e.g., from aviation/aerospace systems, such as hybrid-electric/electric aircraft/aerospace systems or the like) for climate control and/or cooling (e.g., electronics cooling; motor cooling; generator cooling; oil cooling; electric systems cooling for energy savings on aviation/aerospace systems, such as hybrid-electric/electric aircraft/aerospace systems). In example embodiments, the waste heat utilization provides up to 100% of the energy control system (ECS) input energy, and certain configurations allow for substantially no electric energy input (e.g., allows for gravity flow only).
A water separator for use in an environmental control system of an aircraft includes a body having a first upstream end, a second downstream end, and plurality of fluidly distinct flow channels extending between the first upstream end and the second downstream end. A flow of medium provided to the water separator is configured to flow through the plurality of fluidly distinct flow channels in parallel.
B01D 45/16 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream
F25B 9/06 - Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point using expanders
F25B 9/00 - Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
F25B 43/00 - Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
F01D 25/32 - Collecting of condensation water; Drainage
B64D 13/06 - Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space the air being conditioned
80.
HEAT EXCHANGER WITH HEAT TRANSFER AUGMENTATION FEATURES
A heat exchanger includes a plurality of longitudinally-extending first channels and a plurality of second channels fluidly isolated from the plurality of first channels. Each first channels includes a plurality of spiraling internal fins and a plurality of external fins. The internal fins extend from and are integrally formed with the internal walls of the first channel. The external fins connect extend from and are integrally formed with the external walls of the first channels, connecting channels together. The plurality of second channels is defined in part by external walls of the plurality of first channels and the plurality of external fins.
F28F 1/42 - Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element
In accordance with at least one aspect of this disclosure, a system includes one or more collection units configured to collect a sample from an aerosol cloud and a detection unit configured to analyze a composition the sample from the aerosol cloud. In certain embodiments, the one or more collection units can include a plurality of collection units. In embodiments, the collection unit can include a collection medium configured to collect aerosol particles from the aerosol cloud and condense or trap the aerosol particles on or in the collection medium.
A rotor includes a base member including a first side, a second side opposite the first side, and a central opening passing through the first side and the second side. The second side includes an outer circumferential edge having a first dimension and the central opening having an inner circumferential edge having a second dimension. A plurality of blades extend outwardly from the first side. The plurality of blades extend about the central opening. A fuse element is formed in the second side and extends along one of a radial direction and a circumferential direction. The fuse element has a length that is less than the first dimension.
F01D 21/04 - Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for responsive to undesired position of rotor relative to stator, e.g. indicating such position
B64D 13/08 - Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space the air being conditioned the air being heated or cooled
F01D 5/04 - Blade-carrying members, e.g. rotors for radial-flow machines or engines
F04D 29/28 - Rotors specially adapted for elastic fluids for centrifugal or helico-centrifugal pumps
83.
CONFIGURABLE CONTROLLER FOR NEXT GENERATION CONTROL SYSTEM
An environmental control system includes a broadcast-type controller area network (CAN) bus and a plurality of configurable modular controllers coupled to the CAN bus. Each of the plurality of configurable modular controllers includes a modular controller card with a microprocessor and a modular driver board configured to connect and disconnect to and from the controller card. The environmental control system further includes one or more sensors and a primary controller. The sensors are configured to sense one or more parameter values and to provide the one or more parameter values on the CAN bus. The primary controller is configured to communicate with each of the configurable modular controllers via the CAN bus.
A filter assembly includes a manifold having a fluid inlet and a fluid outlet, a filter housing having a filter medium provided therein, the filter medium defining an inner filter chamber and defining an outer filter chamber between the filter medium and the filter housing, the filter housing being removably attached to the manifold so as to provide a fluid flow path from the inlet into the inner filter chamber, through the filter medium into the outer chamber and out of the outlet; characterised by the filter assembly further comprising a valve assembly mounted inside the manifold, the valve assembly comprising a shut off valve piston and a shut off valve spring arranged in engagement with the valve piston to bias the valve piston into a first position
A filter assembly includes a manifold having a fluid inlet and a fluid outlet, a filter housing having a filter medium provided therein. The filter medium defines an inner filter chamber and defining an outer filter chamber between the filter medium and the filter housing, the filter housing being removably attached to the manifold so as to provide a fluid flow path from the inlet into the inner filter chamber, through the filter medium into the outer chamber and out of the outlet. The filter assembly also has a valve assembly mounted inside the manifold. The valve assembly also includes a shut off valve piston and a shut off valve spring arranged in engagement with the valve piston to bias the valve piston into a first position and an adaptor ring located between the shut off valve piston and the filter housing and provided with an annular outlet seal.
A valve disc for a butterfly valve. The valve disc includes a disc body, a main groove suitable for receiving a seal element, and an introduction groove. The disc body comprises first and second faces, an outer periphery, and at least one engagement means configured to receive a shaft for coupling the valve disc to a valve body of the butterfly valve. The main groove extends along the outer periphery to form a continuous groove. The introduction groove has a centreline (CL2) and extends from a groove mouth opening in one of the faces of the disc body to an intersection with the main groove. The main groove is so dimensioned and configured that a seal element can only be inserted into or removed from the main groove via the introduction groove. Optionally, the valve disc is a single continuous body of material.
Fire suppression systems for aircraft include an air source, a first ASM configured to generate inert gas from air from the air source and supply inert gas to a fuel tank, and a second ASM configured to generate inert gas from the air from the air source and supply inert gas to a protected space of the aircraft. The second ASM comprises a membrane having inherent microporosity. A controller, in operable communication with the ASMs, is configured to operate the first ASM and not the second ASM during a first state of operation, and in response to a fire detected in the protected space, operate the second ASM to supply an inert gas from the second ASM to the protected space in a second state of operation.
A62C 99/00 - Subject matter not provided for in other groups of this subclass
A62C 3/08 - Fire prevention, containment or extinguishing specially adapted for particular objects or places in vehicles, e.g. in road vehicles in aircraft
B01D 53/22 - Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by diffusion
B01D 71/64 - Polyimides; Polyamide-imides; Polyester-imides; Polyamide acids or similar polyimide precursors
A variable channel diffuser includes a shroud, a backing plate, a channel plate adjacent to the backing plate, a floor plate adjacent to the shroud, standoffs formed on the floor plate, and recessed areas formed in the channel plate. The channel plate is between the shroud and the backing plate. The floor plate is between the shroud and the channel plate and is movable relative to the channel plate. The standoffs and the recessed areas define channels for fluid flow. Each channel has an area which is variable through movement of the floor plate relative to the channel plate.
A proximity sensor system can include a target assembly having one or more first targets comprising a first material having first magnetic permeability and one or more second targets comprising a second material having a second magnetic permeability. The system can include 5 an inductive proximity sensor positioned relative to the target assembly to sense an inductance of the target assembly. The inductive proximity sensor and/or the target assembly are configured to move relative to the other.
G01D 5/20 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
A method of applying or building a metal layer onto a substrate using cold spray to accelerate the metal powder to high velocities where on impact with the substrate the powder undergoes large plastic deformations to form a metallurgical bond. This method comprises cold spraying a metal powder onto a mesh which is integrated in or applied to a substrate.
An orifice insert is provided and includes a center plug and a ring feature. The center plug has first and second ends and an exterior surface extending between the first and second ends. The exterior surface defines multiple inflow channels that extend from the first end toward the second end and terminate at termination points midway between the first and second ends. The ring feature is disposed about the center plug and the multiple inflow channels to define, with the center plug, a plenum with which the termination points of the multiple inflow channels are fluidly communicative.
F28F 1/06 - Tubular elements of cross-section which is non-circular crimped or corrugated in cross-section
F28D 15/02 - Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls in which the medium condenses and evaporates, e.g. heat-pipes
F28D 1/02 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or mo with the heat-exchange conduits immersed in the body of fluid
F28F 1/02 - Tubular elements of cross-section which is non-circular
F28F 1/40 - Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
A two stage fuel delivery system for an aircraft includes a first stage pump including an inlet connected to a source of fuel and an outlet connected to a combustor assembly, and a second stage pump including an inlet portion connected to the source of fuel and an outlet portion connected to the combustor assembly. A bypass valve is connected between the source of fuel, the inlet, and the inlet portion. The bypass valve selectively disconnects the second stage pump from the source of fuel. A metering valve is connected to the inlet and the inlet portion. The metering valve includes a metering valve inlet and a metering valve outlet. A pressure regulating valve is connected to the metering valve. A stage monitoring system is configured to detect a change in operation of the second stage and control the bypass valve.
A fuel system of an aircraft engine, having: a boost pump having an input and an output; one or more selector valves; a first component pump having an input fluidly coupled to the output of the boost pump and an output of the first component pump is configured to direct fuel to a first component via the one or more selector valves; and a second component pump having an input that is selectively coupled to either the input or the output of the boost pump by the one or more selector valves, and an output of the second component pump is fluidly coupled to a second component and selectively coupled to the first component by the one or more selector valves.
An electrical machine includes a first set of windings, a second set of windings and a power controller connected to the first set of windings by a first set of feeder cables. The power controller controls the current and/or voltage supplied to the first set of windings at a control frequency and generates a test signal to supply to the first set of windings. The test signal has one or more frequency components having a frequency that is significantly higher than the control frequency. The test signal in the first set of windings generates an electromagnetic field that induces a current or voltage in the second set of windings. The power controller includes a detector connected to the second set of windings by a second set of feeder cables. The detector measures the voltage and/or current response of the induced current or voltage.
H02K 11/33 - Drive circuits, e.g. power electronics
H02K 3/28 - Layout of windings or of connections between windings
H02P 27/06 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
95.
COMBINATION SEAL FOR A SUPERCRITICAL CARBON DIOXIDE TURBO GENERATOR
A turbo generator rotor assembly is provided and includes a generator, first and second bearings on a compressor-side and a turbine-side of the generator and a combination seal configuration in which leakage from the compressor cools the first bearing, the generator and the second bearing. The combination seal configuration leads to minimal leakage past the turbine with the generator and the first and second bearings being cooled with leakage flow from the compressor.
F01D 15/10 - Adaptations for driving, or combinations with, electric generators
F01K 25/10 - Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
F01D 11/02 - Preventing or minimising internal leakage of working fluid, e.g. between stages by non-contact sealings, e.g. of labyrinth type
An air cycle machine includes a shaft rotatable about a shaft axis, a compressor section and a turbine section operably coupled to the compressor section. The compressor section includes a compressor housing and a compressor rotor connected to the shaft and the turbine section includes a turbine housing and a turbine rotor mounted to the shaft. At least one heat exchanger is positioned within one of the compressor housing and the turbine housing.
B64D 13/08 - Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space the air being conditioned the air being heated or cooled
F25B 9/00 - Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
An air cycle machine includes an outer housing, a first section arranged within the outer housing, and a second section arranged within the outer housing and operably coupled to the first section. The first section includes a first housing and a first rotatable component and the second section includes a second housing and a second rotatable component. At least a portion of a fluid flow path extending between an outlet of the first rotatable component and an inlet of the second rotatable component is arranged within the outer housing.
A fluid flow channel for a heat exchanger, the channel comprising an elongate tubular channel body extending along an axis A from a first end to a second end, the channel body having walls, the interior surface of which define an interior channel through which heat exchanger fluid flows from the first end to the second end, and wherein the channel body comprises two or more straight sections having a constant cross section in which the interior channel has a rectangular, square or triangular cross-section, and a twisted section between the or each pair of adjacent straight sections, in the axial direction, the twisted section being a section resulting from one of the straight sections twisted about the axis A with respect to an adjacent straight section.
In accordance with at least one aspect of this disclosure, a fuel system can include, a fuel device, a fuel characterization device operatively connected to the fuel device configured to measure performance data of the fuel device before installation into an engine fuel system, and an electronic engine controller operatively connected to the fuel characterization device to receive the measured performance data of the fuel device on start up and calculate a metered mass flow based at least in part on the measured performance data of the fuel device. The electronic engine controller can be configured to control the fuel device to direct, meter, or pump fuel to the engine through the fuel device based on the calculated metered mass flow.
A cooling system of a vehicle including an inlet for receiving a medium and a turbo-generator fluidly connected to the inlet. The turbo-generator includes a turbine operably coupled to a generator by a shaft. The turbine has a turbine inlet and a turbine outlet, the turbine inlet being fluidly coupled to the inlet. The medium is ram air.
B64D 13/08 - Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space the air being conditioned the air being heated or cooled
B64D 13/06 - Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space the air being conditioned
