Abstract: An infrared suppressor system for gas turbine engine is provided for suppressing infrared radiation associated with the hot metal parts of the engine and with the hot exhaust gases exhausted from the engine.

Abstract: A turbo fan engine has a fan gas duct surrounding the exhaust or primary gas stream. The primary gas stream leaves the engine through a plurality of nozzles terminating within the fan gas stream. The nozzles are positioned so that mixing of the two gas streams is accomplished and, when utilized with a pair of clam shells for thrust reversing, cool air from the fan stream cools the inner surface of the clam shells and insulates the inner surface from the hot primary gas stream. The mixing of the streams is accomplished substantially within the fan gas duct.

Abstract: A stationary air-cooled shroud or cylinder forming a portion of a turbine asembly includes an inner ring having a matrix of grooves formed therein, and an outer restraining ring covering the matrix so as to form a labyrinth of passageways for the flow of cooling air therethrough. A suspension ring cooperates with the inner ring and the restraint ring to define an entry flow path for the cooling air, and also a plenum chamber having an auxiliary outlet to provide film cooling air to the clearance spacing between the inner ring and the rotor blade tips. The fow of cool air through the labyrinth is operative to reduce the level and gradient of the metal tempertures in the shroud in order to obtain improved turbine blade tip clearance control.

Abstract: An active clearance control (ACC) for a turbofan engine is disclosed herein where the cross section of the external spray bars are fabricated in square or substantially square configurations.

Abstract: The angle of the variable blocker door vanes in the bypass duct of a turbofan engine is varied in response to the angle of the variable compressor vanes of the engine. A cam and linkage assembly interconnect the blocker doors with the actuation system of the variable stator vanes such that as the angle of the stator vanes is modulated through a first predetermined range, the angle of the blocker doors is modulated through a second predetermined range.

Abstract: In the embodiment shown, the invention comprises a suction/check valve interposed in a gas inlet channel, the channel being open at one end for communication with the atmosphere, and at the opposite end for communication with a gas compressor inlet port. The valve has a bleed hole formed therein for slowly blowing down the compressor receiver at shutdown. A second check valve is operatively interposed between the receiver and the atmosphere for depressurizing the receiver when the compressor unloads. A conduit which communicates with both valves provides a valve-operating, fluid, pilot-pressure to close off the suction/check valve, and to interdict its bleed hole, and to open the second check valve, with compressor unloading.

Abstract: An actuator for adjustable vanes of a turbomachine includes a movable housing defining a chamber. A band is mounted within the chamber and affixed to the housing for movement therewith. A first roller is in engagement with the adjustable vanes and in contact with a first portion of the band. A second roller is in contact with a second portion of the band. A force generating device is connected to the housing for moving the housing and the band affixed thereto relative to said first and second rollers for rotating each of the rollers about its own axis, with rotation of the first roller resulting in corresponding movement of the adjustable vanes.

Abstract: A cover assembly is provided to be secured to the upper end of an exhaust pipe of an internal combustion engine maintained outdoors in such a manner such that a cap forming part of the assembly will cover the end of the exhaust pipe when the engine is quiescent. When exhaust gases exert pressure in the pipe during operation of the engine the cap will be raised against gravity off the end of the pipe to permit the gases to escape. The movement of the cap between open and closed positions is a rocking movement about a pivot and normally results in considerable clatter as the parts strike metal. Means are provided by the invention to reduce the clatter.

Abstract: A turbine assembly is provided for use on an internal combustion engine such as a diesel engine having conventional intake and exhaust manifolds. The assembly includes a hollow section which has an inlet communicating with the exhaust manifold, and an outlet communicating with an exhaust gas entry into a chamber in which a turbine wheel is mounted. Rotatably mounted within the hollow section is a rotor which is adjustable to various selected positions. When in a first selected position, the rotor permits substantially unrestricted exhaust gas flow through the assembly. When in a second selected position, a predetermined amount of exhaust gas is diverted from the turbine wheel chamber through a bypass passageway formed in the hollow section. The end of the bypass passageway terminates downstream of the turbine wheel chamber. When in a third selected position of adjustment, the rotor effects substantial blockage of the exhaust gas flow through the assembly.

Abstract: A reversible gerotor pump having unidirectional fluid flow therefrom dictated by a movable eccentric ring member 30 for positioning the rotor 46 of the pump gear-set 44 in either one of two axially eccentric positions depending upon the direction of rotation of the drive shaft 20 to the pump. Movement of the eccentric ring member from one such position to the other position upon a reversal of direction of the drive shaft is caused by check valve means 70 associated with the pump inlet 68 so that, if reverse rotation of the drive shaft momentarily causes reverse flow of the pumped fluid (e.g., causes the fluid to exit through the inlet) the check valve closes and establishes a hydraulic lock between the gear-set and forces the eccentric ring member to move from the one position to the other eccentric position whereupon the fluid is once again caused to be discharged through the normal pump outlet 64 and enter through the inlet.

Abstract: An exhaust brake modulating control system is provided for an internal combustion engine having a turbo-charger and source of pressurized fluid. The system includes a double-acting piston-cylinder assembly having one cylinder end communicating with the engine exhaust manifold and an opposite end separated from the one end by a piston head. An adjustable control valve is provided having an outlet connected to the cylinder second end, and a plurality of inlets selectively connected to the outlet. One inlet communicates with the pressurized fluid source and a second inlet is vented to the atmosphere. Communicating with the exhaust manifold is an inlet of a hollow section in which a rotor is rotatably mounted. The hollow section has an outlet separated from the inlet by the rotor. The outlet communicates with the turbine wheel chamber of the turbo-charger. When the rotor assumes a first selected position, substantially unrestricted exhaust gas flow past the rotor occurs.