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 novel testing system utilizing a novel subcombination multiple pin/probe ype, motion-sensing accelerometer transducer, capable of sensing exceptionally high levels of structural motion, in the domain of from about 1,000,000 to 10,000,000 Gs (force of gravity). Such motion may be imparted by shock wave forces generated by detonation of high energy ballistic and/or land mine charges, thereby generally deforming some portions of closely adjacent, high strength structures such as steel armor plate being tested. This novel accelerometer transducer comprises at least two and preferably from six to eight potentially deformable pin-like contact probes preferably of pure annealed metal which preferably project from both sides of a support fixture. One set of contact pin ends are generally spaced at slightly different distances from an adjacent surface to be tested.

Abstract: A safety and arming device for a directed missile warhead using a rotor hng a plurality of explosive paths therethrough. A central shaft guides axial and rotary movement of said rotor. Missile launch is sensed and unlatches the rotor. Missile launch acceleration causes the rotor to move axially. Receipt of a second signal causes the rotor to rotate, thereby arming the device by aligning the explosive paths and the detonators. Circuit breakers may also be included on the housing and rotor to produce a continuous electrical path for the firing circuits only when the device is armed.

Abstract: A smoke transducer having an integral photo-electric optical system and h isolated circuitry. A calibration wedge is designed to permit field calibration and to structurally interfit within the sampling chamber.

Abstract: A self-sealing fuel tank which utilizes elongated nonself-adhering polymer ibers attached to the inner surface of the tank wall and interwoven to form a carpet-like liner for efficiently sealing large tears and cored holes. After penetration of the tank wall by a large or tumbling projectile, escaping fluid causes nearby elongated fibers to be swept into the hole, thereby choking the escaping fluid flow. Conventional small caliber self-sealant incorporated in the tank wall then flows into the hole choked by fibers and completes the seal.

Abstract: An ordnance item casing construction which enables case venting and contred combustion of high energy fuel contained within the casing when the ordnance item is exposed to a high temperature environment. This casing construction utilizes a perforated thermally insulating composite doubler and series of thermally conductive plugs aligned with cavities in the casing wall, and applied to the exterior of the ordnance item. Heat from the high temperature environment is conducted by the plugs to the casing wall.Local ignition and combustion of high energy fuel within the casing rapidly burns through the wall at regions of reduced wall thickness caused by presence of the cavities. The interior of the casing is thereby vented, and catastrophic pressure buildup within the casing is prevented.

Abstract: A dome for protecting energy responsive instrumentation in a missile is disclosed which utilizes a plurality of wedge shaped transparent elements mounted in a polymer matrix. The transparent elements are arranged so that aerodynamic pressure acting on the dome compresses each transparent element and prevents dome implosion. Individual elements may crack under excessive aerodynamic load, but are held in place by adjacent elements and by aerodynamic pressure, and retain their optical transmissivity during final trajectory to the target.

Abstract: A layer of high temperature resistant polymer material such as polysulfone r polyimide is bonded between the liner and energetic material in a solid fuel rocket motor, warhead, or other ordnance item. This layer prevents or delays ignition of the energetic material when the ordnance item is exposed to a high temperature environment. The layer does this by forming an impervious barrier between oxygen trapped or chemically contained within the energetic material, and gaseous fuel resulting from chemical degradation of the liner. Combustion of this gaseous fuel and resulting ignition of the energetic material is thus avoided or delayed.

Abstract: The use of polysulfones and powdered oxidizer in the manufacture of cartres is disclosed.