Abrégé

An apparatus and system for controlling the trajectory of a projectile having two rotationally decoupled sections, wherein the first section is rotationally decoupled from the second section. The first section of the projectile contains a navigation system. The first section also contains an actuator by which aero-control surfaces on the second section are actuated. The second section may have external aero-spin surfaces which provide a torque counter to the rotation of the base projectile. The apparatus and system also includes embodiments having applications for nose sections of projectiles.

Classes IPC  ?

• F42B 10/62 - Pilotage par le déplacement de surfaces portantes

Abrégé

A gun sight for use with a weapon configured for super elevation is disclosed herein. The gun sight includes, but is not limited to, an imaging system that is configured for rotation. The gun sight further includes a drive mechanism that associated with the imaging system and that is configured to rotate the imaging system. The gun sight further includes a gyroscope associated with one of the weapon and the imaging system. The gun sight still further includes a processor that is communicatively coupled with the drive mechanism and the gyroscope. The processor is configured to control the drive mechanism to rotate the imaging system in a manner that causes the imaging system to maintain an initial angular orientation based on information provided by the gyroscope when the weapon is superelevated.

Classes IPC  ?

• F41G 5/16 - Systèmes de commande de pointage en hauteur et en direction pour canons pour canons montés sur véhicules à commande gyroscopique

Abrégé

A method for preparing a stabilized nitrocellulose article includes providing a nitrocellulose-containing mat of fibers. The nitrocellulose-containing mat of fibers is treated with a solution that comprises a solvent and a stabilizer to produce the article. The stabilizer is soluble in the solvent. The solvent dissolves the stabilizer and the nitrocellulose in the nitrocellulose-containing mat of fibers is substantially insoluble in the solvent at ambient pressure and temperature. An inflatable bag comprises a shell and the stabilized nitrocellulose article. The shell is formed from a foldable material and has an outer surface and an inner surface. The inner surface defines an interior cavity of the inflatable bag. The stabilized nitrocellulose article is disposed upon the inner surface of the shell in the interior cavity and is foldable in conformity with at least one fold of the shell.

Classes IPC  ?

• D06M 13/144 - Alcools; Alcoolates métalliques
• D06B 9/00 - Traitement de matières textiles en milieu solvant
• D06B 3/02 - Passage des matières textiles à travers des liquides, gaz ou vapeurs en vue d'effectuer un traitement, p.ex. lavage, teinture, blanchiment, encollage, imprégnation de fibres, rubans ou mèches

Abrégé

In accordance with one aspect of the invention, a system, method and apparatus for a boat-tail device is described herein. A body section for a projectile having a deployable portion is provided. Gun gases may pass through an orifice at an aft end of a piston and pressurize a volume in a plenum within the body section. Depressurization at muzzle exit may allow the gas pressurized in the plenum to push the piston aft deploying the deployable portion. A stopping and locking mechanism such as a complementarily tapered piston and opening may engage at the end of the stroke of the piston to stop and lock the piston at a predetermined location, A releasable protective cover may be used to protect the structure of the deployable element and other elements from gun gases and launch loads.

Classes IPC  ?

• F42B 10/44 - Culots spécialement adaptés pour réduire la traînée

Abrégé

A fin retention and deployment mechanism that has the advantage of providing for the deployment of aerodynamic control surfaces on command without the need for an additional actuation device or control circuitry separate from the actuator that controls the angle of the fins during flight. The actuator that is already required for operation of the control surfaces after deployment initiates the deployment of the fins, as well. A latch mechanism comprises a retaining member and a latch, which engages the retaining member enabling a biasing mechanism to force the fins from a stowed position to a fully deployed position.

Classes IPC  ?

• F42B 10/06 - Ailettes placées à l'arrière du projectile

Abrégé

The invention relates generally to a roll damping apparatus for a spinning projectile having a first section and a second section rotatably attached about a roll axis. The roll damping apparatus comprises a first portion attached to the front section, and a second portion attached to the rear section. The first portion is adapted to cause a braking frictional force to act on the second portion, the braking force being effective to control the spin rate of the front section relative to the rear section. The invention further relates to a spinning projectile having a roll damping apparatus.

Classes IPC  ?

• F42B 10/00 - Moyens pour influencer, p.ex. pour améliorer, les propriétés aérodynamiques de projectiles; Dispositions sur les projectiles pour la stabilisation, le pilotage, le freinage de la chute, la réduction ou l'augmentation de la portée