Abstract: An electrical machine utilizes a consequent pole rotor with a polyphase stator assembly and a control coil to produce a widely variable voltage output. Either constant-speed--variable-voltage performance, or variable-speed--constant-voltage performance may be easily achieved by varying the magnitude and level of D.C. current supplied to the control coil. Single and double rotor embodiments are disclosed, with cogging being easily suppressible in the double rotor embodiments.

Abstract: A turbocharger having a variable nozzle vane assembly to be used in association with an engine. A nozzle ring having a plurality of rotatable vanes mounted thereto defining an annular passageway within the turbine housing through which exhaust gas passes upstream of a turbine. Included is a means for rotating the plurality of vanes and a means for preventing binding of the components during thermal cycling.

Abstract: A helicopter flotation pack includes an inflatable flotation bladder secured to an intermediate structural member which includes means for attachment to a helicopter landing skid. The structural member cooperatively defines a sheltered chamber for inflation apparatus and also carries an environmentally protective cosmetic cover which advantageously directs the deployment of the flotation bladder during inflation. The nature of the interconnection between the inflation bladder and structural member is such that both in-flight stability and flotation load-bearing capacity of the flotation bladder are increased.

Abstract: A perforated foil bearing surface having dry lubricant reservoirs dispersed throughout and a method of producing such perforated foil bearing surfaces.

Abstract: Lithium metal is separated from lithium salts in spent torpedo boiler fuel by solubilizing said salts in a solution of a Lewis acid such as boron trifluoride in a polar solvent such as 1,2-dimethoxyethane followed by subsequent separation of the constituents of said mixture.

Abstract: Radiant head resistant fluid-distendable structure and methods for making same.

Abstract: Pressure fluid operated servo system method and apparatus including a servo valve operable by an input signal to effect a system output movement; and which servo valve is responsive to the time rate of input signal receipt to vary a gain ratio of system output magnitude compared to input signal value; and method of making such a servo valve.

Abstract: The piezoelectrically driven diaphragm of an air pump is extended through a chamber and commmunicating outlet passage of the pump's housing. During vibration of the diaphragm, air pulses are alternately expelled through the outlet passage portions positioned on opposite sides of the diaphragm. The air pulses are collected in a rectifying device, carried by the housing, for delivery to a fluidic device or system.

Abstract: An axially asymmetric exhaust gas muffler has a perforated central exhaust duct that is circumscribed by a duality of reactive sound attenuating chambers in each of which is positioned a resonant sound attenuator.

Abstract: A gear pump is provided with a pair of rotatable pumping gears for pumping fluid between inlet and outlet ports formed in a gear pump housing, wherein a portion of the housing is adapted for positional adjustment to reduce internal operating clearances and thereby regenerate pump output performance without requiring pump disassembly or rebuilding.

Abstract: A turbocharger having a variable nozzle vane assembly to be used in association with an engine. A nozzle ring having a plurality of rotatable vanes mounted thereto defining an annular passageway within the turbine housing through which exhaust gas passes upstream of a turbine. Included is a means for rotating the plurality of vanes and a means for preventing binding of the components during thermal cycling.

Abstract: A fuel composition for a reaction chamber which when combined with a selected reactant produces heat energy and hydrogen gas. A reaction chamber structure, method of making and method of operating the reaction chamber are also disclosed.

Abstract: Pressure fluid operated servo system method and apparatus including a servo valve operable by an input signal to effect a system output movement; and which servo valve is responsive to the time rate of input signal receipt to vary a gain ratio of system output magnitude compared to input signal value; and method of making such a servo valve.

Abstract: An auxiliary air supply system which is utilized in association with an engine including at least one exhaust gas driven turbocharger for compression of ambient air. The system further includes low and high pressure auxiliary air compressor for further compression of the compressed air discharged from the turbocharger. The amount of power supplied to each compressor is regulated by a control system responsive to an engine parameter and the auxiliary air pressure.

Abstract: A rotor for an electrical machine has large permanent magnets located at half the pole locations, with alternating pole locations containing ferromagnetic projections which become consequent poles in the rotor. The permanent magnet poles have a high reluctance, while the ferromagnetic poles have a very low reluctance, thereby affording variable flux linkage between the rotor and a stator. Magnetic homogeneity is improved, while susceptibility to thermal degradation in the rotor is reduced substantially.

Abstract: A jet pump has an inlet, an outlet, a flow path communicating the inlet with the outlet, and a high pressure motive fluid inlet. The motive fluid inlet communicates with the flow path via a motive fluid control valve disposed within a nozzle assembly. A jet of motive fluid is directed toward the outlet by the nozzle assembly in order to pump fluid from the inlet to the outlet via the flow path. The nozzle assembly includes an actuator operatively connected with the control valve to selectively control flow of motive fluid in accord with a pressure difference between the motive fluid and a selected and possibly variable reference pressure.

Abstract: Cast titanium alloys and a method of heat treating the alloys in order to obtain fatigue and mechanical properties comparable to wrought titanium is disclosed. The heat treatment is practiced by solution heat treating a cast titanium article above its beta transus, rapidly cooling, stabilizing at a temperature within the alloy's alpha/beta phase range, and finally aging the article to achieve the desired properties.

Abstract: A fluidized bed process and apparatus for uniformly drying particulized wet wood material or waste, commonly called hog fuel, from in excess of 50% moisture content to a 30% level suitable for burning as boiler fuel without generating "blue haze" air pollution typical of conventional rotary dryers. The fluidized bed of this invention is divided into treatment zones by a baffle arrangement. The hog fuel flows substantially horizontally along a circuitous path through the treatment zones. Hot flue gases fluidize the bed of hog fuel and provide necessary drying heat. Fines portions from each zone are entrained by the drying gases and blown out of the vessel just as they achieve the desired level of dryness and before significant blue haze is generated. A cyclone recovers these fines as product. Gas pressure to each treatment zone is adjusted so that only the desired amount of hog fuel is blown from the bed with the balance proceeding to subsequent zones.

Abstract: A fluidized bed process and apparatus for uniformly drying particulized wet wood material or waste, commonly called hog fuel, from in excess of 50% moisture content to a 30% level suitable for burning as boiler fuel without generating "blue haze" air pollution typical of conventional rotary dryers. The fluidized bed of this invention is divided into treatment zones by a baffle arrangement. The hog fuel flows substantially horizontally along a circuitous path through the treatment zones. Hot flue gases fluidize the bed of hog fuel and provide necessary drying heat. Fines portions from each zone are entrained by the drying gases and blown out of the vessel just as they achieve the desired level of dryness and before significant blue haze is generated. A cyclone recovers these fines as product. Gas pressure to each treatment zone is adjusted so that only the desired amount of hog fuel is blown from the bed with the balance proceeding to subsequent zones.

Abstract: A foil thrust bearing having a thrust disk with integral compliant bearing pads or foils. A number of alternative thrust bearing disks are disclosed, each of which provides a plurality of integral, converging, bearing pads or foils having diverging ramps and/or openings therebetween.