Abstract: A sabot fragment diverter deflects selected sabot fragments discarded by ot type ammunition in a directionally controlled manner to prevent direct fragment impact with the firing platform or impact of a deflected fragment with the projectile from which it is discarded. A fragment diverter cone which includes a deflecting surface, a fragment cutter and a barrier dam is connected to the muzzle end of a gun system by an extender cage and a mounting section.

Abstract: A thermally activated electrochemical cell utilizes an anode constructed of lemental lithium and transition metal powder. Iron is disclosed to be the best mode of transition metal powder. The cell uses nitrate salt electrolyte containing lithium nitrate and silver nitrate as a cathode enhancer. Electrical performance of this cell includes open circuit potentials of approximately +3.4 volts at 300.degree. C. and thermal activation within the range of 123.degree. to 465.degree. C. Current densities as high as 1,250 mA/cm.sup.2 have been demonstrated.

Abstract: A packaging system for securely mounting electronic components within a hing including at least a pair of bulkheads in combination with support plates having transversely extending grooves across a surface of the support plates and interlocking support plates having transversely extending interrupted grooves across a surface of interlocking support plates, said grooves and interrupted grooves engage with the edges of the electronic components to achieve the secure mounting.

Abstract: A novel explosive compound, 1,4,5,8-tetranitro-1,4,5,8-tetraazadifurazano[3,4-c][3,4-h]decalin is prepared by the reaction of 3,4-diaminofurazan and glyoxal in dilute hydrochloric acid, followed by the nitration of the intermediate 1,4,5,8-tetraazadifurazano[3,4-c][3,4-h]decalin. The nitrated compound has a higher density and detonation pressure and velocity than the known explosives HMX and HNB.

Abstract: Apparatus for attenuating upstream gas motion induced by axial acoustic ws in a ramjet engine includes a series of hollow truncated conical attenuators acting to both modify and enhance fuel-oxidizer mixing and offering negligible resistance to downstream gas motion while offering substantial resistance to upstream gas motion within the engine.

Abstract: A safety arming device driven by a reversible motor including a detonator sitioned in a casing for initiating explosive logic through the reception of signals from an electric circuit. A driver wheel is rotated by the reversible motor which matingly engages a driven wheel. The driven wheel includes a groove into which a guide pin from the driver wheel moves and the driver wheel rotates through a predetermined angle to align detent slots at a latching position. There is provided an output wheel having gear teeth and explosive output leads, and upon the alignment of the slots in the latching position, the latching mechanism engages the driver/driven wheels, and upon further rotation the wheels are enmeshed to rotate the explosive output lead to an alignment position with the detonator.

Abstract: An arming firing relock device includes a resiliently biased handle lock, a rive shaft, an output shaft or keyed member and a pivot block which may be attached to the exterior surface of a rocket motor. The output shaft may be connected to drive a rocket motor arming firing device. The handle lock moves between a safe position and an armed position via a free position in which the handle lock, drive shaft and output shaft or keyed member may be rotated to control the arming firing device. The pivot block, output shaft or keyed member, drive shaft and handle lock all cooperate to positively lock the arming firing device in the safe or the armed positions respectively, yet enable changing positions without the need for tools.

Abstract: A heat resisting canopy which utilizes a mosaic overlay of quartz or heat resisting glass elements adhesively bonded to a transparent organic shell. A transparent adhesive bonds each mosaic element to the organic canopy shell. A plurality of metallic ribbons, egg-crated together to form a lattice, stabilizes the mosaic structure, and individual elements are retained by a metallic wire mesh which covers the mosaic layer and which is attached to the canopy shell.

Abstract: A pneumatically operated safe and arm device for use in an ordnance item lizes cam controlled mechanical interlocks to prevent premature arming. This device also utilizes staticdynamic fluid pressure differential to cause the enabled mechanism to proceed with arming after a predetermined ordnance item velocity has been obtained. This pressure differential operates on a piston and rod to store energy within a flexible coil spring. Energy stored within this spring is subsequently released to power rotation of a disc, thereby aligning an out-of-line explosive train and causing switching functions in an electric arming and fuzing circuit.

Abstract: A passive inductor and associated circuitry which enables a compact search oil to simulate the response characteristics of a service mine search coil having different electrical properties. Output from the passive inductor is amplified and modified to duplicate frequency response characteristics at ship frequency, magnetic sensitivity, and output impedance of a larger search coil. Provision is made for disengagement of magnetic surveillance by the inductor.

Abstract: A flare release system in which a plurality of flares are sequentially lahed from a submerged float. Launching apparatus for each flare comprises a compressed gas cylinder which is ruptured by a firing pin propelled by an electrically initiated squib. Compressed gas escaping from the cylinder powers an ejection piston to force a flare from the submerged float. An electric circuit distributes firing pulses to each flare launching mechanism according to a predetermined sequence.

Abstract: An actuation mine simulator system which enables realistic training experce in mine sweeping operations without the danger accompanying use of live mines. The actuation mine simulator is preprogrammed to respond at predetermined time intervals to actuation by large objects such as ships. The mine simulator includes buoyant flares for signaling actuation, a tethered float having a signal beacon for facilitating recovery, and an underwater acoustic transmitter for locating the simulator at the conclusion of training exercises.

Abstract: A filter-cooler is provided for use with a rocket motor to cool and filter ighly aluminized hot gases from around 5800.degree. F. to around 2000.degree. F. The cooled and filtered gases are then usable, for example, in thrust vector control or other mechanisms associated with the rocket. In the present system the cooler section is placed ahead of the filter section so that alumina present in the gases begins to solidify ahead of the filter and thus may be more efficiently removed. The filter section comprises a plurality of graphite vortex producing geometries. The vortex direction of the baffles is reversed in succeeding baffles so that the net effect of the high rotational velocities of each vortex is used to separate the particulate contaminates from the gas stream by momentum.

Abstract: Optical slip rings are disclosed which permit signals to be transferred from a rotating body to a non-rotating body without any physical contact. Fiber optic bundles are utilized to conduct light signals on one body to separate fiber optic bundles on the other body. Light is projected across a small gap from the rotating bundle to the non-rotating bundle. Other variations use multiple channels, wave guides, derotating prisms and concentric annular mirrors to achieve signal transfer. The optical slip rings can transfer any signal which may be converted to a light signal.

Abstract: Optical slip rings which permit signals to be transferred from a rotating dy to a non-rotating body without any physical contact. Fiber optic bundles are utilized to conduct light signals on one body to separate fiber optic bundles on the other body. Light is projected across a small gap from the rotating bundle to the non-rotating bundle. Other variations use multiple channels, wave guides, derotating prisms and concentric annular mirrors to achieve signal transfer. The optical slip rings can transfer any signal which may be converted to a light signal.

Abstract: An alignment tool for adjusting the position of a first body relative to a econd body in a severely limited working space. The tool rigidly attaches to the first body and operates through a fork against a pin which is rigidly fixed to the second body. The fork is driven laterally by a lead screw which is driven by a perpendicular input shaft through a pair of 45.degree. bevel gears. A conventional socket wrench type tool supplies input torque.

Abstract: A continuous polymer film formed by air-activated cross-linking of polyfuional prepolymers is applied to the surface of a body of water for suppressing evaporation.

Abstract: Apparatus for restraining an aircraft against the combined forces of a cault launching shuttle and aircraft takeoff power during a catapult assisted takeoff until a predetermined combined force level has been reached. Release of the aircraft is triggered by the relative movement of a central piston within a housing which causes disengagement of gripping lugs from a tensile bar attached to the aircraft. The relative movement is enabled by the compressibility of hydraulic oil confined within the apparatus and loaded by the combined forces.

Abstract: A holdback bar for temporarily restraining an aircraft against the combined orces of engine thrust and catapult force prior to a catapult assisted launch of the aircraft which utilizes strain of a mechanical component to measure the level of combined forces. Housing stretch beyond a pre-determined amount actuates a floating trigger rod to lift a valve from its seat and permit escape of hydraulic fluid from a pressure chamber. The holdback bar includes a compensator for absorbing fluid volume changes caused by thermal expansion or contraction of the hydraulic fluid, and a rupture disk for limiting the pressure obtainable within the hydraulic fluid pressure chamber.

Abstract: A holdback bar for restraining an aircraft temporarily prior to catapult isted launch which utilizes a ball and piston unloader valve to insure rapid, positive release of a pressurized hydraulic fluid. Compensator chambers each having a resilient piston cushion against release shock caused by rapid release of stored strain energy in the hydraulic fluid and provide hydraulic fluid make-up to allow for expansion and contraction and slight leakage losses.