Abstract

The invention relates to a circular modular tray for the additive manufacturing of a part with an axis of revolution on a powder bed, characterised in that it consists of an assembly of modules that are concentrically coupled along a contiguous axis in a radial direction, the modules comprising an annular peripheral module (3) and a circular central module (2).

IPC Classes  ?

• B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
• B29C 64/245 - Platforms or substrates
• B29C 64/30 - Auxiliary operations or equipment
• B29C 64/379 - Handling of additively manufactured objects, e.g. using robots
• B29C 64/40 - Structures for supporting 3D objects during manufacture and intended to be sacrificed after completion thereof
• B33Y 40/20 - Post-treatment, e.g. curing, coating or polishing
• B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
• B22F 10/37 - Process control of powder bed aspects, e.g. density
• B22F 10/47 - Structures for supporting workpieces or articles during manufacture and removed afterwards characterised by structural features
• B22F 10/60 - Treatment of workpieces or articles after build-up

Abstract

The invention relates to a propulsion assembly for an aircraft, comprising a motor and a propeller shaft (18) rotated by the motor, the propeller shaft passing through a sealed housing (16A) containing a lubricating fluid, as well as a bladed propeller coupled to the propeller shaft and comprising electrical devices which are electrical energy consumers, the sealing between the sealed housing and the propeller shaft being performed by a dynamic seal (30) housed between a rotating dynamic seal carrier (32) secured in an angular manner to the propeller shaft and a dynamic-seal-supporting flange (34) secured to an end part of the housing facing the propeller, the rotating dynamic seal carrier being secured to the propeller shaft by being held in an axially supported manner against a bearing (28) for supporting said propeller shaft. According to the invention, for the electrical energy supply of the electrical devices, the propeller assembly comprises a rotary transformer (36) rotated by the propeller shaft and comprising a stator (38) having a housing which is secured to the dynamic-seal-supporting flange, as well as a rotor (40) having a housing which is secured to said propeller shaft.

IPC Classes  ?

• B64D 15/12 - De-icing or preventing icing on exterior surfaces of aircraft by electric heating
• B64C 11/00 - Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
• H01F 38/18 - Rotary transformers