[특허]Emergency device for relighting a windmilling turbojet

[미국특허] Emergency device for relighting a windmilling turbojet 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02C-007/262
출원번호	US-0173152 (2002-06-18)
우선권정보	FR-0008059 (2001-06-19)
발명자 / 주소	Franchet, Michel Hebraud, Guy
출원인 / 주소	SNECMA Moteurs
대리인 / 주소	Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
인용정보	피인용 횟수 : 28 인용 특허 : 10

초록 ▼

An emergency device for relighting a windmilling turbojet, the jet comprising a fan driven by a low-pressure turbine via a first shaft and a compressor driven by a high-pressure turbine via a second shaft disposed coaxially around the first shaft, a differential interconnecting said first and second shafts while compensating for their different speeds of rotation in normal operation or the turbojet, and a braking system connected to the differential so as to enable it to be slowed down or blocked when the turbojet shuts down, thereby enabling the first shaft to entrain the second shaft so that it reaches a speed that favors relighting of the turbojet.

대표청구항 ▼

1. An emergency device for relighting a windmilling turbojet, the jet comprising a fan driven by a low-pressure turbine via a first shaft and a compressor driven by a high-pressure turbine via a second shaft disposed coaxially around the first shaft, said device comprising a differential interconnecting said first and second shafts while compensating for their different speeds of rotation in normal operation of the turbojet, and a braking system connected to the differential so as to enable it to be slowed down or blocked when the turbojet shuts down, thereby enabling the first shaft to drive the second shaft so that it reaches a speed that favors relighting of the turbojet. 2. A device according to claim 1, wherein the differential comprises at least one planet-carrying annular gear rotating about the first and second shafts and coupled in rotation with a rotary portion of the braking system. 3. A device according to claim 1, wherein the differential acts as a multiplier from the first shaft to the second shaft when it is slowed down or blocked by the braking system. 4. A device according to claim 1, wherein the first and second shafts are co-rotating shafts. 5. A device according to claim 1, wherein the first and second shafts are contra-rotating shafts. 6. A device according to claim 1, wherein the braking system includes at least one disk brake. 7. A device according to claim 1, wherein the braking system includes a retarder. 8. A device according to claim 1, wherein the differential is placed together with the braking system outside an intermediate casing. 9. A device according to claim 1, further comprising an electronic computer enabling the braking system to be controlled and calculating the braking pressure that is required to adapt the transfer of energy from the first shaft to the second shaft.

이 특허에 인용된 특허 (10) 인용/피인용 타임라인 분석

Ciokajlo John J. (Cincinnati OH) O\Brien Michael T. (Cincinnati OH), Air-start assembly and method.
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Snow Barton H. (Wyoming OH) Homan Frank R. (Cincinnati OH), Apparatus for windmill starts in gas turbine engines.
상세보기
Ossi Ronald R. (Milford CT), Convertible turbo-fan, turbo-shaft aircraft propulsion system.
상세보기
Edwards Geoffrey (Rugby GB2) Clarke Michael G. (Dorset GB2), Differential gear assembly.
상세보기
Brockmann Heinz (Bad Homburg DEX), Gas turbine power unit.
상세보기
Snow Barton H. (Wyoming OH), Method and apparatus for windmill starts in gas turbine engines.
상세보기
Behm Michael E. (Cincinnati OH) Toraason Clifford M. (Cincinnati OH), Reversing marine gas turbine drive.
상세보기
Hield Paul M. (Bristol GB2) Cundy John M. (Derby GB2) Midgley Ronald A. (Derby GB2) Newton Arnold C. (Derby GB2) Rowe Arthur L. (Derby GB2), Shaft power transfer in gas turbine engines with machines operable as generators or motors.
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Midgley Ronald A. (Derby GB2), Turbopropeller or turbofan gas turbine engine.
상세보기
Petrowicz John P., Windmill engine starting system with fluid driven motor and pump.
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이 특허를 인용한 특허 (28) 인용/피인용 타임라인 분석

Francisco, Jay M., Anti-windmilling starter generator.
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Francisco, Jay M., Anti-windmilling starter generator.
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Gallet, Francois, Bypass engine with contrarotating turbine wheels including a reversing module.
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Linet, Hugues Henri Raymond; Mouchnino, Cyril Franck; Pettinotti, Serge Dominique, Device for the offtake of mechanical power between the HP and LP shafts of a double-shaft turbine engine.
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Delaloye, Jim; Christopher, Matthew, Electric motor driven lubrication pump control system and method for turbomachine windmill operation.
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Glahn, J. Axel; Sahm, Michael K., Engine integrated auxiliary power unit.
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Derouineau,Jean Luc, Engine power extraction control system.
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Kurschat, Ernest; Xiong, Yufei; Haugland, Ron; Thompson, Craig E., Engine systems with enhanced start control schedules.
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Trumper,Ronald; Anderson,Stephen Arthur; Dooley,Kevin Allan; Brand,Joseph Horace, Gas turbine braking apparatus and method.
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Moniz, Thomas Ory; Cooker, Paul; Orlando, Robert Joseph, Gas turbine engine assembly and method of assembling same.
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Dooley, Kevin Allan, Gas turbine engine including apparatus to transfer power between multiple shafts.
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Dooley, Kevin Allen, Gas turbine engine including apparatus to transfer power between multiple shafts.
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Kupratis, Daniel Bernard; Schwarz, Frederick M., Gas turbine engine with fan-tied inducer section and multiple low pressure turbine sections.
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Lemmers, Jr., Glenn C., Geared turbofan emergency power.
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Lemmers, Jr., Glenn C.; Behling, David S., High to low pressure spool summing gearbox for accessory power extraction and electric start.
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Berryann, Andrew P.; Suciu, Gabriel L., Mechanism for turbine engine start from low spool.
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Eick, Chris D.; Gaines, Louie T.; Laidlaw, Mitchell J.; Benson, Dwayne M.; Portolese, Larry A.; Flaherty, Brian L.; Pearson, Wayne T., More electric aircraft power transfer systems and methods.
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Gaines,Louie T.; Auer,Peter J.; Lane,Glenn H.; Wissinger,James A., More electric aircraft starter-generator multi-speed transmission system.
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Ullyott, Richard, Operation of an aircraft engine after emergency shutdown.
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Moniz, Thomas Ory; Schilling, Jan Christopher; Orlando, Robert Joseph; Patt, Raymond Felix, Power take-off system and gas turbine engine assembly including same.
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Sheridan, William G., Rotor brake and windmilling lubrication system for geared turbofan engine.
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Chaudhry, Zaffir A., Split gearbox and nacelle arrangement.
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Becoulet, Julien Fabien Patrick; Tan-Kim, Alexandre Jean-Marie, Turbine engine comprising a device for braking the fan rotor.
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Lardellier, Alain Marie Joseph, Turbine engine with an alternator and method for transmitting movement to an alternator.
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Charier, Gilles Alain; Morel, Patrick Charles Georges; Servant, Regis Eugene Henri, Turbojet engine accessory gear box driveshaft; modular additional accessory.
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Bart, Jacques Rene; Beutin, Bruno Albert; Morel, Patrick Charles Georges, Twin spool turbine engine with power take-off means on the low-pressure and high-pressure rotors, and power take-off module for the turbine engine.
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Lardellier,Alain, Twin-spool turbojet with means for driving ancillary machines.
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Lickfold, Ray D.; Williams, Gregg; Thompson, Jr., Robert S., Two-spool turboshaft engine control system and method.
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[미국특허] Emergency device for relighting a windmilling turbojet 원문보기