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| Number | Title | Issue Date |
| 4715779 | Bleed valve for axial flow compressor A bleed valve construction for a multistage axial flow compressor in which a series of bleed doors in frames located between adjacent struts of a support case between successive stages of the compressor are actuated by a ring that has only circumferential... | 12/29/1987 |
| 4712370 | Sliding duct seal A seal assembly 34 for forming an air seal around conduits or accessories 32 crossing aircraft engine bypass ducts 30. The seal assembly comprises a seal retainer plate 40, a seal plate 36 and a seal ring 44. The seal ring 44 has two opposingly sprung leg... | 12/15/1987 |
| 4711084 | Ejector assisted compressor bleed Means are provided to enhance the bleed flow from a low pressure stage of a multi-stage compressor. An ejector nozzle is positioned in a passage connected to a bleed air reservoir. The reservoir is constructed to collect bleed air from the low pressure st... | 12/08/1987 |
| 4702070 | Gas turbine engine valve control system A control apparatus for the bleed valve of a gas turbine engine compressor enables the engine to be operated with a low risk of compressor surge or stall, particularly on emergency shut down. The control apparatus includes a control valve and a diverter valve.... | 10/27/1987 |
| 4685287 | Compressor system and start-up method therefor A compressor system includes a compressor, a turbine for driving the compressor, and an auxiliary burner. Compressed air from an external source is supplied to drive the turbine during start-up. The air compressed by the compressor is then supplied to the... | 08/11/1987 |
| 4671318 | Aircraft engine bleed air flow balancing technique A bleed flow modulator is used in conjunction with pressure regulating valves regulating bleed air pressure from each engine to a common manifold. The bleed flow modulator monitors the pressure drop across a heat exchanger, which pressure drop is proporti... | 06/09/1987 |
| 4596116 | Sealing ring for a turbine rotor of a turbo machine and turbo machine installations provided with such rings The rotor of each stage of a turbine is surrounded, with a clearance by a fixed ring, formed by a metal ring supporting internally an annular thermal screen, in the form of ceramic segments. Expansions and contractions of the metal ring under the action o... | 06/24/1986 |
| 4550561 | Method for improving the fuel efficiency of a gas turbine engine An energy recovery system is provided for an aircraft gas turbine engine of the type in which some of the pneumatic energy developed by the engine is made available to support systems such as an environmental control system. In one such energy recovery sy... | 11/05/1985 |
| 4546605 | Heat exchange system An air/oil heat exchanger is relatively interconnected to the compressor discharge air or fan discharge air of a fan-jet engine to minimize the size of the heat exchanger core so as to be able to locate the heat exchanger within the intermediate case betw... | 10/15/1985 |
| 4545787 | Process for producing by-product oxygen from turbine power generation A method is set forth for the generation of net power and the recovery of by-product oxygen-enriched gas at low power requirements. Air is compressed to elevated temperature and pressure, at least a portion of the air is combusted and a portion of the oxy... | 10/08/1985 |
| 4531357 | Gas turbine engine with an operating-fuel cooled generator A gas turbine engine for aircraft. A generator, which undertakes to supply energy for auxiliary devices, is spaced between a compressor and a turbine. A heat exchanger which surrounds the generator housing, and through which compressor air and fuel flow, ... | 07/30/1985 |
| 4514976 | Integrated auxiliary power and environmental control unit An integrated auxiliary power unit and environmental control unit for an airplane 2, said integrated unit 2 comprising a prime mover 4, a variable geometry compressor 22 operable selectably by bleed air from the propulsion engine of said airplane or conne... | 05/07/1985 |
| 4503666 | Aircraft environmental control system with auxiliary power output An environmental control system for a jet aircraft has a single compressor coupled to a cooling turbine and an auxiliary power turbine. The compressor provides air to both turbines. Air to the power turbine is mixed with fuel to form combustion gases to d... | 03/12/1985 |
| 4494372 | Multi role primary/auxiliary power system with engine start capability for aircraft The invention is a multi role primary/auxiliary power system with engine start capability for aircraft that provides electric, mechanical and air conditioning power as well as engine starting functions. The compressor (20), turbine (26) and motor/generato... | 01/22/1985 |
| 4463552 | Combined surge bleed and dust removal system for a fan-jet engine Contaminated air injected by an axial flow fan jet engine is treated by centrifuging the contamination through the surge bleed valves into the fan discharge stream in an efficient manner.... | 08/07/1984 |
| 4428194 | Compressor bleed air control apparatus and methods A turbine engine accessory power unit has a compressor bleed air control system in which a surge bleed valve is proportionally and integrally controlled to maintain a constant minimum compressor bleed flow rate slightly above the compressor's surge flow r... | 01/31/1984 |
| 4424989 | Drain hole An improved drain hole is provided for a pneumatic line of a gas turbine engine. The improvement is essentially comprised of an enlargement that prevents liquid surface tension at the drain hole outer opening from inducing buildup of liquid inside the pne... | 01/10/1984 |
| 4404793 | Apparatus for improving the fuel efficiency of a gas turbine engine An energy recovery system is provided for an aircraft gas turbine engine of the type in which some of the pneumatic energy developed by the engine is made available to support systems such as an environmental control system. In one such energy recovery sy... | 09/20/1983 |
| 4400934 | Gas turbine unit with auxiliary devices and a compressed air branch or gas under pressure A gas turbine unit with auxiliary devices and, in the region of the compressor, a compressed air branch or gas under pressure for the operation of the gas turbine. The compressed air branched off from the compressor, or the gas under pressure, serves for ... | 08/30/1983 |
| 4380893 | Compressor bleed air control apparatus and method A turbine engine accessory power unit has a compressor bleed air control system in which a surge bleed valve is proportionally and integrally controlled to maintain a constant minimum compressor bleed flow rate slightly above the compressor's surge flow r... | 04/26/1983 |
| 4358925 | Temperature sensing assembly A temperature sensing assembly which continuously senses the temperature of a constituent stream, of a flow of a gaseous medium; and, as a result of such sensing, generates pneumatic servo-pressure to drive air valves, which control the flow of the consti... | 11/16/1982 |
| 4344282 | Compressor bleed system A fan engine having a core engine and a fan duct has bleed ports positioned circumferentially around the compressor housing of the core engine to bleed flow into the fan duct. A strap covers the circumferential line of holes and it is moved between an ope... | 08/17/1982 |
| 4329114 | Active clearance control system for a turbomachine An axial compressor is provided with a cooling air manifold surrounding a portion of the shroud, and means for bleeding air from the compressor to the manifold for selectively flowing it in a modulating manner axially along the outer side of the stator/sh... | 05/11/1982 |
| 4182117 | Diffuser vane cusp bleed aperture with automatic ejector control device In a gas turbine engine an auxiliary airflow is provided to power accessories. This auxiliary airflow is obtained from a bleed aperture which is constructed immediately downstream of a diffuser vane in a cusp which is formed in the trailing edge of the va... | 01/08/1980 |
| 4149371 | Air supply control system An air supply system having a combustor whose output drives a turbine. The turbine drives a compressor part of whose output is fed to the combustor. A portion of the compressor output is bled off for utility usage. Instead of varying the fuel rate to the ... | 04/17/1979 |
| 4091613 | Independent power generator A gas turbine powered aircraft auxiliary power system capable of efficiently supplying all aircraft auxiliary services both in flight and on the ground and further capable of operating independently of the aircraft main engines. The system employs multipl... | 05/30/1978 |
