Abstract: This wide range compressor has a casing forming a passage with an inlet and an axial portion, and a rotor with blades extending into the passage and functioning, when the rotor operates, to draw air into the inlet and force it through the passage. One of the problems with wide range compressors is a variation of the pressure as the volume changes rather than maintaining a desired constant or substantially constant discharge pressure. To solve this problem, the present compressor is provided, first, with a ring in the inlet to divide the flow into inner and outer annuluses and, second, with vane or other elements positioned and operative to vary one of the flow annuluses to maintain the output pressure of the compressor substantially uniform over the complete range. The concept embodied in the additional structure disclosed herein is applicable to fans, blowers, compressors, and pumps of axial, centrifugal, or mixed flow configurations which often have difficult wide range requirements.

Abstract: A propulsion/control system for aircraft of the vertical takeoff and landing type having a body without wings or tail and relying entirely on fluid streams for effecting liftoff, propulsion, and control. The body has an air duct with an inlet adjacent the rear end and a downwardly directed outlet at each side, an engine driven fan being disposed in the duct at the inlet and a cascade of adjustable vanes at each outlet. Operation of the fan causes air to flow into the inlet, through the duct, and issue in streams from the outlets, the reaction of such streams imparting lifting and flight forces to the body. By adjusting the cascades of vanes, the effects of the forces can be varied to control the movement of the body. To further control the movement and stability of the body in the air, additional adjustable elements may be provided.

Abstract: This fitting is designed to be applied to a flexible walled tank, of the type employed in aircraft to hold fuel or other liquids, to provide a reinforced opening for receiving attachments, such as, connectors, gauges, pumps, conduits, and the like. The fitting is composed of a plurality of layers or plies of fabric reinforced elastic material, certain layers being mechanically connected to each other and all of the layers being adhesively joined at contacting overlapped portions into an integral unit. The layers are sized and shaped to give the unit inner and outer ring portions, the former being substantially solid and the latter having spaced flexible layers. Parts of the layers forming the inner ring portion of the unit have openings which are aligned to receive internally threaded elements for screws used to fasten the attachments to the fitting and hence to the tank.

Abstract: This anti-theft device has a plurality of arcuate metallic sections hingedly connected to be removably applied to an airplane propeller blade at one side of the propeller shaft and locked in place to prevent unauthorized removal. The device forms an eccentric weight mass which when the engine is operated, causes vibrations so severe that the aircraft cannot take off or fly successfully. A warning flag or banner is attached to the device and anyone at all familiar with aircraft operation will not attempt to take the plane.

Abstract: Primarily this system includes an air inducting, circulating, and exhausting section and a pair of solar responsive fluid treating sections, one of the latter being provided to cool the air and the other to heat the air. Both solar responsive fluid treating sections, however, function in concert for cooling and heating.The air inducting, circulating and exhausting section has duct portions through which air is drawn from the atmosphere by a fan and either used as admitted or heated or cooled, then directed into the enclosure being served, all or part of the air being recirculated, the part not recirculated being discharged to the atmosphere. The duct portions contain air heating and air and other solution cooling devices as well as fans and guide or flow controlling vanes. One solar responsive fluid treating section has an absorptive chemical solution reservoir, a solution cooler, a solar heated solution concentrator, heat and vapor exchangers, pumps, valves, and connecting lines.

Abstract: The subject engine includes two turbocompressor units, the first a relatively low pressure device having a rotor with mechanically connected turbine wheel and compressor impeller elements. The second unit has separated turbine wheel and compressor impeller pieces with power being transmitted from the turbine wheel to the compressor impeller through a differential gear assembly. In operation, the compressor of the first unit supplies compressed air to the second unit which increases the pressure of the air and supplies it to a combustor where fuel is added and burned to generate high temperature high pressure gases. These gases are first applied to the turbine of the second unit then to the turbine of the first unit after which they may be passed through a recuperator to heat the compressed air from the compressor of the second unit before it is introduced into the combustor. The differential gear assembly has an output shaft leading to a torque converter or other power transferring mechanism.

Abstract: The subject compressor is of the centrifugal type having a rotatable impeller with hub and shroud sides and a diffuser surrounding the impeller, the diffuser having spaced side walls with vanes spaced around the impeller to provide passages for receiving fluid discharged from the impeller, the diffuser also having chambers formed on the hub and shroud sides and restricted openings along lines of static pressure in the diffuser passages establishing communication between the chambers and the diffuser passages near the inlet ends thereof whereby the pressures at such passage inlet ends will be equalized during the operation of the compressor and the tendency of the compressor to stall prematurely thereby reduced. Suitable communication between the chambers on the hub and shroud sides may be provided.

Abstract: This turbine wheel has a plurality of blades radiating from a central hub and is manufactured by a novel method including the steps of assembling a plurality of preformed ceramic or superalloy blades into a ring with foot portions on the blades projecting into the central region of the assembly, filling such central region with powdered ceramic material, such as silicon carbide, or a superalloy material, heating and isostatically pressing, at least the central region, to compact the powdered material around the foot portions into a unitary hub. The blade feet are suitably shaped to provide a precise interlocking engagement between the blades and the unitary hub.

Abstract: The subject system is primarily for supercharging a low compression Diesel engine. It includes connected turbine and compressor elements and a hydraulic system having a first motor/pump unit mechanically connected with the turbine and compressor elements and a second motor/pump unit mechanically connected, through an output transmission, to the engine. The hydraulic system also includes a plurality of valves, an accumulator, a reservoir, and ducts connecting such elements and the motor/pump units. The first motor/pump unit is of the variable volume type and is controlled by an actuator responsive to fluid pressures in the inlet and exhaust manifolds of the engine. The second motor/pump unit is a fixed displacement device which may be driven by fluid pressure from the accumulator in the engine starting phase and by the engine to supply hydraulic pressure to recharge the accumulator and assist in controlling the operation of the supercharger.

Abstract: The subject rotor comprises a disklike body having hub and rim sections joined by a web section. The body is cast, molded or otherwise suitably formed of powdered silicon (and a binder, if necessary, to make it retain its shape until finally treated) which is reaction bonded to convert the silicon particles into a unitary mass. During the casting, molding or other forming step, one or more reinforcing rings of hot pressed silicon nitride or other suitable ceramic are embedded in the body. The ceramic selected must be one which will unite with the silicon during the reaction bonding operation to make a unitary mass. The reinforcing ring or rings are located in regions exposed to unusual stress in the use of the rotor to achieve the required strength.

Abstract: This apparatus for coupling and decoupling driving and driven elements includes an overrunning clutch mechanism having complemental parts with members on one part movable in a plane extending radially to the axis of rotation of the parts to engage the members with the second part for effecting a driving connection between the parts, one of the parts being selectively movable axially relative to the elements to interrupt and reestablish the radial registration of the members with the second part, the elements being coupled when registration is established and decoupled when registration is interrupted.

Abstract: The subject control applies to a vehicle having an engine with a throttle, a variable speed transmission, an axle with a housing, and drive wheels, there being a power responsive actuator for the transmission to change the power or speed ratio. The control includes method and apparatus for governing the application of power to the actuator, such method and apparatus being responsive to a combination of input signals from the throttle and a transmission output speed modified in accordance with thrust developed by the drive wheels and sensed by a device having a flex member connected with the frame of the vehicle and the drive wheel axle housing.

Abstract: An archery bow accessory having a hand grip with a bow string holding and releasing mechanism, a draw tube projecting from the hand grip, and a guide connected with the bow and receiving the draw tube. The guide has a lock for retaining the draw tube in a bow flexed position. By drawing back on the hand grip the bow can be flexed and if desired retained in such condition by the lock on the draw tube and guide until an arrow is to be projected. This function can be performed by depressing a plunger with thumb pressure to release the bow string and arrow from the handle. A simple twist of the handle will release the draw tube from the lock on the guide to permit the hand grip to be moved toward the bow for repeating the bow flexing operation. If the bow is to be unflexed without discharging the arrow, the hand grip may be slightly twisted to release the draw tube from the lock in the guide and the bow string moved toward the bow under the control of the operator.

Abstract: This ceramic composition is produced from a mixture of yttrium oxide and heavy rare earth oxides having an atomic number of from 64-71 in selected proportions for the construction of crucibles and the lining of molds employed in making castings of reactive metals, such as titanium and alloys thereof. The elements utilized in the composition impart a minimum of contamination to the molten metal during the melting and casting phases and are produced from an ore with only the refinement steps necessary so as to secure maximum economy and yet insure the production of castings of the highest quality.

Abstract: The subject transmission includes a pair of pulleys mounted for rotation on spaced parallel axes, each pulley having axially spaced sets of oppositely inclined guideways for adjustably receiving drive elements which engage the internal face of an endless flat belt extending around the pulleys and transmitting power from one to the other; one set of guideways on each pulley is axially movable relative to the other to adjust the drive elements toward and away from the pulley axis and vary the effective diameters of the pulleys thus changing the drive ratio of the transmission. Fluid pressure responsive actuators effect the relative movement of the guideways to change pulley diameters under a suitable control system which may be manual or automatic.

Abstract: The subject rotor comprises a disklike body having hub and rim sections joined by a web section. The body is cast, molded or otherwise suitably formed of powdered silicon (and a binder, if necessary, to make it retain its shape until finally treated) which is reaction bonded to convert the silicon particles into a unitary mass. During the casting, molding or other forming step, one or more reinforcing rings of hot pressed silicon nitride or other suitable ceramic are embedded in the body. The ceramic selected must be one which will unite with the silicon during the reaction bonding operation to make a unitary mass. The reinforcing ring or rings are located in regions exposed to unusual stress in the use of the rotor to achieve the required strength.

Abstract: This electromagnetic coil is composed of concentric multi-turn windings in magnetic aiding relationship, one winding being formed of copper wire and the other of wire made of copper contaminated with a minor percentage of a metal having a different coefficient of resistance than copper. The wires of both windings having a positive temperature coefficient of resistance, one being less than the other so that the power demands of the coil at low temperatures will be reduced with a minimum loss in hot ampere turns. The wire of copper contaminated with the other metal is of a smaller gage size and the thickness of the winding of such wire bears a predetermined ratio to the total of both windings whereby they will have substantially equal heat densities.

Abstract: A pure fluidic fuel control system for a gas turbine engine in which engine speed and compressor discharge pressure are sensed and utilized to control the flow of fuel to the engine. In the system an analog fluid signal proportional to engine speed is applied to two separate fluidic circuits, one circuit to generate a signal for controlling the engine during acceleration and the other for controlling the engine during steady state operation. The difference between these two signals is multiplied by a signal proportional to the compressor discharge pressure, the product signal being proportional to the necessary fuel flow for any engine condition. The product signal is amplified and applied to a fuel flow valve, the position of which is sensed and fed back to the input of the product signal amplifier for closed loop control.

Abstract: This rotary sealing means has a casing with spaced concentric inner and outer walls connected by an end wall, the latter having a shoulder adjacent the inner wall. A primary sealing element, composed of carbon or the like, is guided for nonrotative movement between the inner and outer walls, such element having a counterbore which forms a shoulder opposed to and spaced from the shoulder in the casing. A secondary sealing element is disposed in the space between the shoulders, such secondary element in one form of the invention being annular and having a plastic part of generally channel-shaped cross section with the open side facing inwardly so that fluid pressure applied thereto will tend to urge the flaps of the channel toward the shoulders. Spring means are also positioned between the flaps of the channel to initially urge the flaps toward the shoulders. Variations in the plastic channel and spring means may be provided to extend the usefulness of the seal.