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 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 air conditioning system for vehicles having a reverse Brayton cycle cooling system with a turbine drive for the rotor in the reverse Brayton cycle cooling system. A binary working fluid is used in the air conditioning system with air used in the reverse Brayton cycle cooling system. Waste heat is used to provide superheated water vapor for driving the turbine with the turbine return supplied to the air flow at the outlet of the compressor of the cooling system. The combined working fluid is supplied to a heat rejection heat exchanger where the excess water vapor is condensed and returned to the waste heat recovery system.

Abstract: An air cooling system having a rotary assembly within a non-circular chamber wherein compression and expansion used in a modified reverse Brayton cycle are provided within the same chamber by the change in volume brought about by vanes sliding within slots in the rotor. Air is supplied to the compressor portion of the chamber from an air-to-air heat exchanger which receives cooled air from the expander. A transfer passage is provided between the output of the compressor and the inlet of the expander. A liquid cooled heat exchanger is provided adjacent the compressor. A second liquid cooled heat exchanger is provided around the transfer passage. Coolant is supplied to the liquid cooled heat exchangers from a radiator.

Abstract: A system for protecting aircraft tires and axle bearings from excessive heat developed in the braking system, having a plurality of osmotic heat transfer devices having the cooling fluid pumped from the cold end, which is cooled by radiation fins, to the hot end, within the brake disk locking keys, by osmotic pumping across a membrane. The working fluid can use water as the solvent and the solute is one of the chlorides of sodium or potassium or one of the chlorates of cessium, sodium or calcium.