Abstract: A control system is provided which prevents a powerful, propeller driven, jet training aircraft from requiring corrective action to throttling and gyroscopic effects when the student wishes to fly the aircraft in coordinated flight. The control system includes a digital memory having stored therein flight test generated data representative of the relationship between the amount of rudder trim required to maintain the aircraft in coordinated flight as a function of aircraft engine torque and airspeed. Sensors are provided to measure aircraft engine torque aircraft altitude aircraft speed, and pitch rate. The measured parameters are coupled to the digital computer. The digital computer combines the parameters provided by the sensors and data read from the memory to produce a composite rudder trim signal which automatically reduces rudder forces induced by throttling and gyroscopic effects produced in response to pilot commanded maneuvers to thereby maintain the aircraft in coordinated flight.

Abstract: This invention relates to improvements in the method by which elongate frame elements such as the spars in aircraft wings are fastened to the skin panels covering same where these skin panels are of the sandwich type having inner and outer facesheets with a core bonded therebetween, such method consisting of preparing the panel to receive its frame elements by cutting elongate grooves spanwise through the inner facesheet and the core therebeneath while leaving the outer facesheet intact; bridging the gap thus produced in the inner facesheet with one bundle of filaments adhesively bonded thereto, the latter being contained in a woven connector in the form of a strap or band running lengthwise of the groove, and this filament bundle forming an endless strand of yarn that is laid back and forth transversely across the gap in side-by-side parallel rows but which are parted at intervals for the side-by-side lays of at least one other similar yarn strand to pass therebetween in intersecting relation; adhesively-bon

Abstract: A cryogenic fuel system for an internal combustion engine utilizing both the liquid and vapor of a saturated liquid fuel comprising an insulated storage tank having inner and outer walls a vapor tube passing through the walls of the tank with its open end positioned approximate the top of the tank above the liquid level and its opposite end connected to the engine; a liquid entry and exit tube passing through the walls of the tank with a portion of the tube at or above the open end of the vapor tube, the liquid tube extending downwardly to the bottom portion of the tank to its open end; a first pressure-actuated valve means positioned in the vapor tube having an open or closed position which opens the vapor tube to the engine when the tank pressure exceeds a predetermined pressure; and a second valve means in the liquid tube having an open and closed position which opens the liquid tube to the engine when the engine is running.

Abstract: A highly destructive fuel-air type drop bomb which requires no retardation or restriction of its terminal velocity for efficient detonation; which utilizes a normally non-explosive, normally liquid fuel dispersed in air for its explosive power; which centrally carriers a low brisance heaving type fuel dispersing explosive surrounded by the body of liquid fuel; which includes a proximity fuse to detonate the low brisance explosive to break the fuel container and to disperse the fuel into the surrounding air in minute particles to form an aerosol cloud of large volume and of substantially uniform density in close proximity to the target; and which carries a time delay detonator for detonating the aerosol cloud after it has formed.

Abstract: A fuel-air type bomb which contains a liquid fuel normally non-explosive, with a bursting charge centrally located within the fuel; the bursting charge, upon firing, shocks the fuel into a highly reactive mixture with the surrounding air while simultaneously disseminating the fuel at a supersonic rate over a large area, which causes increasing blast effects.

Abstract: A highly destructive fuel-air type drop bomb which requires no retardation or restriction of its terminal velocity for efficient detonation; which utilizes a normally non-explosive, normally liquid fuel dispersed in air for its explosive power; which centrally carries a low brisance heaving type fuel dispersing explosive surrounded by the body of liquid fuel; which includes a proximity fuse to detonate the low brisance explosive to break the fuel container and to disperse the fuel into the surrounding air in minute particles to form an aerosol cloud of large volume and of substantially uniform density in close proximity to the target; and which carries a time delay detonator for detonating the aerosol cloud after it has formed.