[특허]Fan case for turbofan engine having a fan decoupler

Fan case for turbofan engine having a fan decoupler 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F01D-021/00
출원번호	US-0431463 (1999-11-01)
발명자 / 주소	Robert P. Czachor Robert J. Hemmelgarn
대리인 / 주소	Andrew C. Hess
인용정보	피인용 횟수 : 16 인용 특허 : 11

초록 ▼

A fan case for a turbofan engine having a fan including plurality of fan blades mounted to a rotor disk and a decoupler that fails in response to a predetermined load includes a substantially annular shell. The shell has a forward section, an intermediate section, and an aft section. The fan case further includes an aft facing step formed at the forward end of the intermediate section to prevent blade fragments from being ejected forward. The intermediate section is axially aligned with the fan and has a large inside diameter. The intermediate section thus defines an annular space around the fan blades that is sufficiently large to allow the fan to orbit when the decoupler fails. The intermediate section and the aft section are aligned radially to allow blade fragments to be ejected aft, avoiding additional secondary blade damage.

대표청구항 ▼

1. A fan case for a turbofan engine having a fan including a plurality of fan blades mounted to a rotor disk and a decoupler that fails in response to a predetermined load, said fan case comprising:a substantially annular shell having a forward section, an intermediate section, and an aft section, said intermediate section being axially aligned with said fan and having a forward end, wherein said aft section has an inside diameter that is equal to said intermediate section inside diameter so as to define a continuous inner surface; and an aft facing step formed at said forward end of said intermediate section.

이 특허에 인용된 특허 (11)

Adamson Arthur P. (Cincinnati OH), Blade containment device.
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Bellia Donald L. (West Chester OH) Glynn Christopher C. (Hamilton OH) Humke Brian J. (Cincinnati OH), Blade containment system.
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Forrester James M., Blade containment system.
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Van Duyn Keven G., Containment case for a turbine engine.
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Armstrong Neil D. (Derbyshire GB2), Containment structure.
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Clarke Jonathan P. (West Chester OH), Fan case liner for a gas turbine engine with improved foreign body impact resistance.
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Goodwin Jeremy P,GB2, Gas Turbine engine casing construction.
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Stewart Ian F. (Derby GB2) Sathianathan Sivasubramaniam K. (Derby GB2) Chisholm David J. (Derby GB2), Gas turbine engine casing construction.
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Briggs Henry R. (Bristol GB2), Gas turbine engines.
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Kuzniar Stanislaw,CAX ; Wojtyczka Czeslaw,CAX, Hardwall fan case with structured bumper.
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Schilling Jan C., Turbomachine fan casing with dual-wall blade containment structure.
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이 특허를 인용한 특허 (16)

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Dimelow, Stephen Jonathan; McMillan, Alison Jane, Casing assembly.
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Parks, Robert, Ducted spinner for engine cooling.
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Snyder, Burke J., Fan case.
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Robertson, Jr., Thomas J.; Webb, Scot A.; Clarkson, Steven C., Fan case rub system.
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Robertson, Jr., Thomas J.; Costa, Mark W.; Santana, Johan R., Fan case rub system, components, and their manufacture.
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Parks,Robert, Inbound transition control for a tail-sitting vertical take off and landing aircraft.
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Riou, Georges Jean Xavier; Verseux, Philippe, Inner wall for a turbomachine nacelle.
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Parks,Robert, System and method for controlling a roll rate of a torsionally-disconnected freewing aircraft.
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Parks,Robert; Led��,Jean Charles; Drela,Mark, System and method for controlling engine RPM of a ducted fan aircraft.
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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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Fan case for turbofan engine having a fan decoupler 원문보기