Abstract: Installation for centering, in an outer housing, an inner housing of a steam turbine having an extraction interstage including a tubular shaped portion formed on the inner housing and communicating with the extraction interstage, the outer housing having a wall formed with a passageway wherein the tubular shaped portion is received, an extraction connecting pipe disposed on the outer housing over the passageway thereof, the extraction connecting pipe having sealing surfaces engaging with corresponding sealing surfaces formed on the wall of the outer housing, the mutually engaging sealing surface being disposd eccentrically to the passageway and to the tubular shaped portion, the tubular shaped portion having a projection with lateral flanks extending therefrom and engaging with clearance in a corresponding lateral recess formed in the wall of the outer housing, and key means disposed in the clearance between the lateral flanks of the projecton and the wall of the outer housing for centering the inner housing

Abstract: A method and apparatus for mixing fuel and an oxidizing agent includes an electrically charged electrode which forms an electrostatic field through which a stream of fuel is passed so that the fuel particles become electrostatically charged and subsequently repel one another to disperse into and mix with an oxidizing agent and vaporize on contact with a heat source such as the wall surface of an intake manifold of an internal combustion engine or the walls of fuel burning apparatus, or combustion chambers of jet or rocket engines and the like. Fuel particles passing through the electrostatic field are charged by induction charging and in addition may also be electrostatically charged by direct contact with the electrode, which is provided with an open outlet end to permit a relatively unobstructed flow of intermixed fuel and oxidizing agent with a minimum of flow resistance and little possibility of ice formation.

Abstract: A double bypass, variable cycle gas turbofan engine is provided with a variable area bypass injector which varies the area through which the inner bypass stream is injected into the outer bypass stream. The bypass injector comprises an upstream variable area, double bypass selector valve, the position of which determines whether the engine will operate in the single or double bypass mode, and a downstream static pressure valve which defines an optimum flow path for injecting the inner bypass stream into the outer bypass stream. The ability to vary the area through which the inner bypass stream is injected into the outer bypass stream permits the static pressure valve to operate as an ejector and permits control of the two bypass air streams through creation of a static pressure balance at the exit of the variable area bypass injector.

Abstract: A thrust reverser is provided for use with an asymmetric aircraft gas turbine engine exhaust nozzle. The thrust reverser includes a movable aerodynamic flap downstream of the asymmetric nozzle casing which is rotatable about one pivot in order to effect in-flight thrust vectoring through deflection of the exhaust stream, and which is also independently rotatable about another pivot to effect thrust reversing. In the reverse thrust mode, the leading edge of the flap is immersed into the exhaust stream, thereby splitting the stream into two portions, one of which is deflected upward and forward by a turning vane incorporated into the leading edge of the flap, and the other portion of which is deflected downward and forward by a hinged lip connected to the flap trailing edge. The thrust reverser thus permits the exhaust stream to be ejected in the vertical plane to produce reverse thrust without an accompanying pitch moment even though the exhaust nozzle is not symmetrical in the vertical plane.

Abstract: A staged air burner having a swirl chamber for providing a swirl flow path for primary combustion air, a tangential duct system for providing a tangential flow path for primary combustion air flowing toward the swirl flow path, and a converging passage structure for providing a converging flow path for secondary air which flows along the converging flow path inwardly toward an axis of the swirl chamber downstream of the latter. At least two fuel supply systems are respectively situated at two of the above flow paths for supplying combustible fuel thereto so that it is possible to fire fuel simultaneously at least at two of the flow paths.

Abstract: One component, such as a rear cowling of a turbojet engine nacelle, is held o another component, such as a flange of the engine housing, by a plurality of lockbolts. The lockbolts are synchronously controlled to effect attachment or detachment of the cowling or other component. Each lockbolt includes a strap which may be fixed with respect to the stationary component such as the flange. Each lockbolt also includes a tie bar having a hook at one end for cooperation with the associated strap and a pivot shaft at the other end. The pivot shaft rides in a slide track which may be disposed in a second support attached to the removable component. There is a moving part which may be carried by the second, stationary support, the moving part including a cam which cooperates with the pivot shaft of the tie bar to impart translational movement to the tie bar. The cam has a dwell portion which enables the moving part to move beyond the position at which the hook of the tie bar is fully withdrawn.

Abstract: A tray has an upturned flange at least on the front edge thereof, and support means to space the tray above the floor of a fireplace, such that an opening is provided under the front of the tray to permit air flow. A hollow, raised portion in the tray, or draft control, has orifices that permit a controlled flow of air to fuel in the tray. The tray is closely fitted to the walls of a fireplace; so that, substantially, the only source of oxygen for the fuel in the grate is through the orifices in the draft control. In a preferred embodiment, the draft control is removable and fits over an opening in the tray. Also, valve means may be included for closing the draft control to any desired extent.

Abstract: A liquid transfer pump in which a flexible hose may be arranged along the internal peripheral wall of a semicircular external enclosure and a drive shaft which is rotated by a motor or the like is provided at a position with the equal distance from the internal peripheral wall and a plurality of squeeze rollers which travel around the drive shaft in accordance with rotation of the drive shaft while rolling around their own axis and squeeze out the liquid in the flexible hose while depressing the flexible hose against the internal peripheral wall to transfer the liquid from one position to another position is rotatably supported by a holder fixed to the drive shaft, wherein the internal peripheral wall of the external enclosure is slanted and the external peripheral surfaces of the squeeze rollers opposite to the internal peripheral wall are made parallel with the internal peripheral wall.

Abstract: An exhaust gas purification system for internal combustion engines comprising two exhaust gas passages which are substantially equal in length and each of which has a substantially constant cross-section. A thermal reactor communicates with the exhaust gas passages, and a collector is provided on the open ends of the exhaust gas passages. Since the ignition timing of every cylinder is different from each other, the mass of exhaust gases and the mass of secondary air are ejected from the exhaust passages in different phases. The collector is formed to collect and mix the mass of exhaust gases and the mass of secondary air which are ejected from both of the exhaust gas passages at a different time, and has an outlet for discharging the exhaust gases and the secondary air into the chamber of the thermal reactor with mixing thereof.

Abstract: An improved grill panel and motor mount assembly for fans and fan motors includes a plurality of flexible cables connecting the end plates of the motor housing with a mounting bracket attached to a louvered panel. The cables retain the blower motor in proper position while providing sufficient flexibility to damp out vibrations which occur due to the operation of the fan motor. The combination sheet metal air discharge grill and fan motor mount assembly includes sectors of louvers arranged about a center support section of the grill panel.

Abstract: A thrust augmentor for a turbofan, gas turbine engine is disclosed. Techniques for mixing and burning dissimilar density gases in a thrust augmentor are developed. In accordance with one specific teaching the flame front in a swirl augmentor is stabilized by a continuously operative pilot burner. The pilot burner is positioned in the radially outward portion of the augmentor. The pilot burner employs fuel premixing techniques and is adapted to operate at low inlet pressure levels.

Abstract: A thrust augmentor for a turbofan, gas turbine engine is disclosed. Techniques for mixing and burning dissimilar density gases in a thrust augmentor are developed. In accordance with one specific teaching the flame front in a swirl augmentor is stabilized by a continuously operative pilot burner. The pilot burner is positioned in the radially outward portion of the augmentor.

Abstract: An electromagnetic pump is disclosed in which a pair of check valves and a pressure-regulating mechanism are inserted in series in a fluid passage extending from a suction inlet to a discharge outlet and a pressure chamber operatively connected with a plunger is provided between the check valves. When a solenoid coil surrounding the plunger is supplied with an intermittent electric current, the plunger moves to and fro, thereby the pressure in the pressure chamber being varied to have the check valves given rise to pumping action. The pressure-regulating mechanism function to control the pressure of fluid discharged from the outlet, thereby absorbing the pulsation generated by the reciprocal pumping action of the plunger.

Abstract: The pilot burner for a high M.sub.N inlet burner is folded to substantially reduce the overall length of the combustor. The annular burner includes a splitter design where a diffuser surrounds the burner and connects to an outer shroud which contains the inlet of the pilot burner. Flow reverses into the pilot burner where it is directed to the primary burning zone of the combustion chamber.

Abstract: A fuel injection system, in which an adjustment in the fuel injection point, which is dependent on the load, is accomplished by controlling the pressurized fluid with a regulator sleeve, which dams the fuel quantity diverted by the regulator sleeve in order to conduct this dynamic pressure to the fuel injection point adjusting piston or to the pressure control valve, to influence the control pressure therewith.

Abstract: A heat exchanger of the type in which multiple layers of helically coiled tubes surround a core tube, has spacers between the layers which are constituted by elongated bodies provided with seats receiving successive tubes of each layer and having dovetail formations enabling the bodies of each layer to be connected to those of the adjoining layers. The bodies thus act as spacers for the successive turns in each layer and for the successive layers and retain the turns specifically at the ends of the coils to facilitate positioning thereof with respect to the core tube and/or the housing.

Abstract: A linear peristaltic pump is disclosed. The pump includes a pivotal pump arm and a flexible tube secured thereto to inhibit longitudinal tube movement. A means for applying a force to such arm, such as a spring, is provided to cause the pump arm to pivot. A stop device is disposed in the path of travel of the pump arm so that the pump arm pivotal travel may be terminated as the pump arm comes to rest against such stop device. The flexible tube is disposed adjacent a surface of the pump arm and is pivotal therewith so that the flexible tube is pinched off between the pump arm surface and the stop device as the pump comes to rest against it. A rotatable roller assembly is provided having at least one roller mounted on a rotatable roller support, the roller intermittently contacting the flexible tube as the roller support is rotated causing a quantity of liquid to be peristaltically moved within the tube.

Abstract: An apparatus for controlling the air-fuel ratio of an air-fuel mixture to be supplied into a combustion chamber of an internal combustion engine comprises a passage bypassing a carburetor and a throttle valve of the engine for supplying an additional air into the engine intake duct downstream of the throttle valve to dilute the air-fuel mixture to an air-fuel ratio most suited for the engine operation. An air valve is provided in the bypass passage to vary the air-flow cross-sectional area of the passage. The opening of the air valve is controlled mainly in accordance with the air-fuel ratio of the mixture as detected by an air-fuel ratio detector in the path of flow of engine exhaust gases. A variable orifice is provided in the bypass passage downstream of the air valve and defined by a valve seat and a needle valve operatively associated therewith to vary the opening area of the orifice.

Abstract: A fuel injection pump for internal combustion engines in which fuel is pressurized and distributed seriatim to multiple cylinders of the engine. The fuel delivery timing, for example the timing of the onset of injection, is made variable, e.g. depending on engine speed, and the amount of fuel injected is also variable and may, in particular, also depend on engine speed. In one embodiment, the relative rotation of the fuel delivery member made for the purpose of changing the fuel timing is also imparted to the fuel magnitude control assembly which therefore undergoes no change and remains independently adjustable. Two other embodiments are also presented.

Abstract: A hydraulic pump assembly having a motor actuated by a source of fluid under pressure and in turn actuating a fluid pump under the control of a valve responsive to operation of the motor. The diameter of a piston of the pump is smaller than the corresponding diameter of a piston of the motor in order to permit the pump to obtain higher output pressures than are required to actuate the motor. The valve includes a valve element connected directly to the piston of the motor and slidably disposed in a pair of axially spaced, cylindrical housing parts so as to sequentially place ports provided in spaced ends of the valve element in communication with passages provided in the cylindrical housing parts.