[특허]Reduction gear assembly and a gas turbine engine

Reduction gear assembly and a gas turbine engine 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02K-003/02 F01M-009/10
출원번호	US-0534882 (1990-06-08)
우선권정보	GB-0016659 (1989-07-21)
발명자 / 주소	Hadaway Edward S. (Derby GB2) Wedlake Norman J. (Bristol GB2)
출원인 / 주소	Rolls-Royce plc (London GB2 03)
인용정보	피인용 횟수 : 72 인용 특허 : 0

초록 ▼

A turbofan gas turbine engine (10) comprises a fan rotor (32) driven by a core engine (11) via a shaft (36) and a reduction gear (38). A lubricant source (63) is arranged to supply lubricant to the reduction gear (38) to lubricate gear teeth and bearings (52) in the reduction gear (38). An annular collector (76) is positioned coaxially around the reduction gear (38) and is secured to the fan rotor (32) and is driven by the reduction gear (38). The annular collector (76) is arranged to collect lubricant leaving the reduction gear (38) on its inner surface. A number of static scoops (82) collect lubricant from adjacent the inner surface of the annular collector (76) to return the lubricant to valves (86). The valves (86) allow the lubricant to return to the lubricant source (63) in normal operation. If the lubricant source (63) fails to supply lubricant to the reduction gear (38) the valve (86) returns the lubricant to the reduction gear (38) to allow the reduction gear (38) to operate for a period of time without a supply of lubricant.

대표청구항 ▼

A gas turbine engine comprising: a core engine; a rotor having a plurality of radially outwardly extending rotor blades secured thereto; shaft means for mounting the rotor; a reduction gear assembly interconnecting the rotor and core engine, whereby the core engine is arranged to drive the rotor via the shaft means and the reduction gear assembly; a source of lubricant arranged to supply lubricant to the reduction gear assembly; and annular lubricant collecting member positioned coaxially around the reduction gear assembly to collect lubricant leaving the reduction gear assembly, whereby the annular lubricant collecting member is driven by the reduction gear assembly; at least one lubricant scoop relatively rotatable with respect to and arranged to collect lubricant from a trough adjacent to an inner surface of the annular lubricant collecting member, whereby said at least one lubricant scoop is arranged to return lubricant to the lubricant source; and valve means arranged to control the flow of lubricant from the lubricant scoop, whereby in normal operation the valve means allows the return flow of lubricant from the lubricant scoop to the lubricant source, and in the event of at least a reduction of lubricant supply from the lubricant source to the reduction gear assembly, the valve means prevents the return flow of lubricant from the lubricant scoop to the lubricant source and interconnects the lubricant scoop to the lubricant source and the reduction gear assembly to allow the lubricant from the lubricant scoop to return to the reduction gear assembly to form a recirculating lubricant system.

이 특허를 인용한 특허 (72)

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Suciu, Gabriel L.; Norris, James W.; Nordeen, Craig A.; Merry, Brian, Fan blade with integral diffuser section and tip turbine blade section for a tip turbine engine.
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Xu, JinQuan, Fluid system with gravity controlled valve.
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Sheridan, William G., Fundamental gear system architecture.
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Sheridan, William G., Fundamental gear system architecture.
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Sheridan, William G.; McCune, Michael E.; Schwarz, Frederick M.; Kupratis, Daniel Bernard; Suciu, Gabriel L.; Ackermann, William K.; Husband, Jason, Fundamental gear system architecture.
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Sheridan, William G., Gear system architecture for gas turbine engine.
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Carrieres, Alain, Gear with optimized gear web shape.
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Sheridan, William G.; McCune, Michael E., Geared gas turbine engine with reduced oil tank size.
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Law,Chi, Geartrain coupling for a turbofan engine.
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Suciu, Gabriel L.; Portlock, Lawrence E.; Merry, Brian, Inflatable bleed valve for a turbine engine.
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Gauthier, Gerard Philippe; Morreale, Serge Rene, Lubricating and cooling epicyclic stepdown gearing.
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Peters,Robert E.; Messerschmidt,Dwayne; Glahn,J. Axel; Allard,Kenneth L.; Jen,Hsianmin F.; Spires,Larry W.; Barnsby,Roger M., Method of scavenging oil within a gas turbine engine.
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Suciu, Gabriel L.; Merry, Brian, Modular tip turbine engine.
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James, Denman H.; Glahn, Jorn A., Reduced trim flow gas turbine engine oil system.
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Suciu, Gabriel L.; Norris, James W.; Nordeen, Craig A., Regenerative turbine blade and vane cooling for a tip turbine engine.
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Suciu, Gabriel L.; Merry, Brian; Norris, James W.; Sirica, Steven J., Variable fan inlet guide vane assembly for gas turbine engine.
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Suciu, Gabriel L.; Merry, Brian; Norris, James W.; Sirica, Steven J., Variable fan inlet guide vane assembly, turbine engine with such an assembly and corresponding controlling method.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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연합인증

Reduction gear assembly and a gas turbine engine 원문보기

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Reduction gear assembly and a gas turbine engine 원문보기

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이 특허를 인용한 특허 (72)

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