Abstract: A roll control system for a reentry vehicle having the pay load positioned within the vehicle so as to offset the center of gravity from the aerodynamic axis of the vehicle. A radial mass unbalance is created in the aft end of the vehicle to create a trim angle of attack dependent upon the vehicle roll rate which provides a source of roll torque with the out-of-plane radial center of mass offset. With the use of a mass and spring arrangement, the mass unbalance is controlled by centrifugal force to terminate the roll torque at the prescribed design roll rate.

Abstract: A yaw stabilization system for an aircraft ejection seat having a vane for sensing the angular offset of the yaw air flow velocity vector and for extending paddles into the air stream in response to the velocity vector offset. The extended paddle is acted upon by the air stream to provide a restoring moment around the center of gravity of the seat and occupant to return the seat to the desired attitude with respect to the air flow velocity vector.

Abstract: An airfoil for use in an axial flow compressor, a high-bypass turbofan or as a turning vane in an airflow duct having a crenelated trailing edge. The crenelated trailing edge produces pairs of counterrotating vortices which promote rapid mixing between the low momentum fluid, in the wake of the airfoil, and the adjacent fluid streams. The mixing of the adjacent streams with the low momentum wake acts to re-energize the wake.

Abstract: A heat transfer calibration plate for use in obtaining data for determining the heat transfer coefficient in a wind tunnel test system having a copper plate mounted in an aluminum support plate. Nine heat flux gages are positioned in a horizontal and a vertical row with a center gage common to the two rows. A heater is provided to heat the plate to the desired temperature. Thermocouples are provided to indicate plate temperature. Outputs of the thermocouples and heat flux gages are recorded on a recorder. All of the heat flux gages except the center gage are connected to the recorder through a rotary switch. Plenum temperature and pressure are also recorded.

Abstract: A rotary vane gas cycle apparatus having radial slots in the vanes and with cam bearings supported in the slots. A camtrack member is supported by the rotary vane gas cycle apparatus housing and fits into the slots in the vanes and rotor to control the movement of the vanes during rotation of the rotor assembly within the chamber in the housing. Springs are provided in the rotor slots to support the weight of the vanes when the rotor assembly is not rotating.

Abstract: A ramjet powered vehicle having a bleed slot in the subsonic diffuser, for the ramjet combustor, which supplies air to a turbine for supplying power to vehicle accessories. A vortex tube is provided between the bleed slot and the turbine to provide a cool air supply. Radar absorbing material is positioned adjacent ramjet inlet with a cooling duct provided to supply cooling air from the vortex tube to the ramjet inlet cowl lip to provide cooling for the radar absorbing material.

Abstract: A launch platform for conventional landing gear aircraft having the launch platform configured as a ram wing structure with wheel latches secured to the platform. The platform is secured to the aircraft by means of the wheel latches. The wheel latches are released to permit the aircraft to leave the platform by pilot command. A parachute system is provided for platform deceleration after aircraft take-off. Spoilers are provided on the ram wing for stabilization of the ram wing during rotation.

Abstract: A protective hood for protecting flight crewmembers from chemical-biological agents having a nonpermeable covering which fits over the helmet and extends over the shoulders of the flight suit. A rigid transparent lens is sealed to the helmet covering and is positioned in front of the flight helmet visor assembly. A hose enclosure member is secured to the helmet covering and is closed around the oxygen hose with hook and loop fasteners. Hook and loop fasteners also provide a closure for the front of the helmet covering and shoulder covering members. Openings, sealed with pocket members are provided on the side of the protective hood to permit adjustment of the visor. An air nozzle is provided under the hood to provide flushing of chemical-biological agents as well as cooling and evaporative action in the facial region.

Abstract: A rotary vane gas cycle apparatus having radial vane guide slots in the rotor for receiving vane guides on the rotor vanes which slide in the slots. One or more radial guides are provided for each vane. In one embodiment a vane guide is provided on one side of the vane. The rotor guide slots restrict movement of the vane toward or away from the guide slot.

Abstract: An apparatus for determining the mass of an unknown object in a zero gravity environment having an impact plate connected at one end of a spring with the other end connected to an object of known mass, such as a space vehicle. A movement of the impact plate acts to close a switch which is again opened at the end of the impact time.

Abstract: A fan for use as a front fan or in the lift fan system with aircraft jet engines having blades supported by a segmented hub platform and a segmented tip platform which are supported by hub support hoops and tip support hoops. The blades are secured to the hub platform segments and tip platform segments by composite pre-preg pin stock which is inserted in holes in the tip platform, the hub platform and fan blades. The pins are placed under axial compression to expand the pin diameter to provide a precise fit. Channel members are provided between the tip hoops and the blades. Some of the channels have extensions which form seals.

Abstract: A test sample support for flat plate test samples used in the simultaneous laser, wind tunnel and tensile machine testing having a cantilever box frame member supported on the tensile machine with an adjustable sample alignment member and a stationary sample alignment member supported on the box frame member. Test sample backing members are adjustably supported on box frame member adjacent the stationary sample alignment member and on the adjustable sample alignment member. Two sample retainer buttons are secured to the stationary sample alignment member and two sample retainer buttons are secured to the adjustable sample alignment member. The stationary sample support member is positioned upstream of the test sample and has a sharp leading edge to provide a well defined flow field over the test sample.

Abstract: A hydraulic decelerator having a waterbrake cylinder positioned within a reservoir wherein the cylinder is made up of a plurality of cylinder segments which are secured to a solid block member with four rods. The interfaces of the segments are ground and polished to provide a smooth close fit. Each segment includes bore holes in a predetermined pattern in the top and two sides with orifice or plug inserts being threaded into the holes. Internally threaded captive ring members are held between semicircular channels at the adjoining surfaces of the channels. Transition orifice inserts are threaded into the ring members. A frangible membrane is secured between the first segment and piston guide assembly secured to the first segment. The reservoir is filled with water, including a rust inhibiter, to a level of about 1/4 inch above the segmented waterbrake cylinder such as to completely fill the cylinder with water.

Abstract: A collision avoidance system having a seat parachute deployment system secured to the pilot's seat. The seat parachute deployment system has a flap member secured to the survival kit on the side remote from the pilot. The flap member drops down to prevent entanglement of the seat parachute or suspension lines with the pilot's legs. The seat parachute is stowed in an elongated sleeve on the flap and is drawn from the sleeve during seat separation. The suspension lines are stowed in a conventional manner. A connecting line, connected between the suspension lines and seat attachment lines, is stowed in elongated sleeves on the flap.

Abstract: A vapor cycle cooling system having a rotary vane device which provides two stages of compression of the working fluid. The output of an evaporator is supplied to the input of the first compressor stage with the output of the second compressor stage being supplied to a condenser. In one embodiment the output of the condenser is subjected to two stages of expansion with the output of the first expansion stage being supplied to a receiver. The vapor resulting from the first expansion is separated from the saturated liquid in the receiver and is added to the flow between the first and second compressor stages. In a second embodiment the output of an expansion valve in one flow path is used to cool the input of an expansion valve in a second flow path between the condenser and the evaporator.

Abstract: A reverse Brayton cycle rotary vane cooling system having a compressor and an expander driven by a common shaft. The vanes which slide in slots in a rotor are actuated by cams and cam rollers. The vanes are constructed with high modulus of electricity fibers in an epoxy resin binder. The outer wear surface of the vanes contain a material with self lubricating properties.

Abstract: An injection system for suspensions and solutions having five cartridges supported on a cartridge support. The cartridges are connected to a coalescing disc with five inlet passages and a single output passage with a feed line connected to the single passage. Suspensions and solutions supplied to the cartridges are selectively injected into a test subject by supplying a saline solution to the cartridge from a syringe pump through a selector which selects the cartridge to which the saline solution is supplied.

Abstract: A hydraulic drive and braking system for vehicles having a pair of positive displacement pumps connected to drive axles attached to the wheels of the vehicle. Hydraulic fluid is supplied to the positive displacement motors from a reservoir by means of a variable displacement pump. The flow to the motors is controlled by a flow divider connected to the steering linkage. Braking is provided by blocking the return flow of the positive displacement motors. An antiskid system senses wheel rotation and responsive thereto prevents the blocking of the return flow of the positive displacement motors.

Abstract: An apparatus, for measuring head accelerations of a test subject, having a mouthpiece which includes metal clips for securing the mouthpiece to the upper teeth of the test subject. Three accelerometers are secured to a mounting block which is attached to the mouthpiece. The three accelerometers have their active axis located along three orthogonal axis through the mounting block. The mounting block, the accelerometers and the accelerometer leads are embedded in an electrically insulating material.

Abstract: A loading device for transferring radioactive microsphere suspensions from a storage container to test apparatus having a three way stopcock including three connectors. A 1 ml syringe is connected to one of the stopcock connectors with a 5 ml syringe being connected to a second stopcock connector. A two inch cannula hypodermic needle is connected to the third stopcock connector. The hypodermic needle has airflow passages cut in the connector portion adjacent the needle.