[특허]Method and apparatus for spraying fuel within a gas turbine engine

[미국특허] Method and apparatus for spraying fuel within a gas turbine engine 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F23R-003/34
출원번호	US-0096530 (2002-03-11)
발명자 / 주소	Rice, Edward Claude Ress, Jr., Robert Anthony Williams, Reginald Guy
출원인 / 주소	Allison Advanced Development Company
대리인 / 주소	Woodard, Emhardt, Moriarty, McNett & Henry LLP
인용정보	피인용 횟수 : 74 인용 특허 : 14

초록 ▼

A fuel spraybar assembly for spraying fuel within a gas turbine engine. The spraybar assembly includes radial and lateral members that distribute fuel within the flowpath. In one embodiment two lateral members are located at the radially inward end of a radial member and generally form a "T" shape. Circumferentially spaced adjacent spraybars subdivide the flowpath into a plurality of circumferential combustion zone segments. In one embodiment the junction of the radial and lateral members provides a flameholding feature that stabilizes the combustion flame. In another embodiment, fuel is introduced non-uniformly within the afterburner resulting in thermal vectoring of the engine thrust.

대표청구항 ▼

1. A method for changing the direction of a vehicle, comprising: providing a vehicle with a gas turbine engine including an afterburner, the afterburner having a flowpath with a centerline and a plurality of fuel spraybars disposed therein; propelling the vehicle in a first direction with thrust from the gas turbine engine, the afterburner being fueled by the plurality of fuel spraybars in a first fuel distribution field; selecting to propel the vehicle in a second direction distinct from the first direction; distributing fuel asymmetrically within the flowpath from the plurality of fuel spraybars to define a second fuel distribution field within the afterburner different from the first fuel distribution field; and burning the fuel within the second fuel distribution field to an create an off-centerline thrust to modify the direction of the vehicle. 2. The method of claim 1, wherein the flowpath has a top and a bottom, and wherein said distributing creates a fuel asymmetry from the top to the bottom, and wherein said burning results in an off-centerline thrust that applies a pitching moment to the vehicle. 3. The method of claim 1, wherein the flowpath has a first side and a second side and wherein said distributing creates a fuel asymmetry from the first side to the second side, and wherein said burning results in an off-centerline thrust that applies a yawing moment to the vehicle. 4. The method of claim 1, wherein the flowpath has a first side, a second side, a top and a bottom, and wherein said distributing creates a fuel asymmetry from the first side to the second side and from the top to the bottom, and wherein said burning results in an off-centerline thrust that applies a combined pitching and yawing moment to the vehicle. 5. The method of claim 1, wherein in said distributing a portion of the flowpath receives no fuel from the plurality of fuel spraybars. 6. The method of claim 1, wherein at least one of the plurality of spraybars does not deliver fuel into the flowpath during said distributing. 7. The method of claim 1, wherein said distributing introduces a quantity of fuel within a portion of the flowpath that results in localized stoichiometric combustion during said combustion. 8. The method of claim 1, wherein each of the plurality of fuel spraybars includes a selectively operable radial member adapted for the generally circumferential distribution of fuel and a selectively operable lateral member adapted for the generally radial distribution of fuel. 9. The method of claim 1, which further includes a convergent divergent nozzle in flow communication with the flowpath, the convergent nozzle receiving the asymmetric exhaust gas profile from said burning. 10. The method of claim 4, wherein in said distributing a portion of the flowpath receives no fuel from the plurality of fuel spraybars; and wherein each of the plurality of fuel spraybars includes a selectively operable radial member adapted for the generally circumferential distribution of fuel and a selectively operable lateral member adapted for the generally radial distribution of fuel. 11. The method of claim 1, wherein each of the plurality of fuel spraybars includes means for preventing coking therein.

이 특허에 인용된 특허 (14) 인용/피인용 타임라인 분석

Mahias Olivier M. M. (Montgeron FRX) Pasquali Xavier J. (Le Mee sur Seine FRX) Roche Jacques A. M. (Lisses FRX) Romero Mireille S. N. (Melun FRX) Vilfeu Elisabeth (Etioles FRX), Afterburner for a turbofan engine.
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Clements Thomas R. (Palm City FL) Graves Charles B. (Jupiter FL), Augmentor burner.
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Labatut Josiane M. F. (Yerres FRX) Marlin Francois M. P. (Melun FRX) Mazeaud Georges (Yerres FRX) Mirville Francois J. (Melun FRX), Combination turbojet-ramjet-rocket propulsion system.
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Mayer Jeffrey C. (Swampscott MA) Manteiga John A. (North Andover MA), Cooled spraybar and flameholder assembly including a perforated hollow inner air baffle for impingement cooling an outer.
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Holladay Thomas E. (Lake Park FL), Fuel distributor/flameholder for a duct burner.
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Roche Jacques A. M. (Lisses FRX), Fuel injector for a turbojet engine afterburner.
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Vdoviak John W. (Marblehead MA), Fuel spraybar.
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Woltmann Ivan E. (West Chester OH) Mayer Jeffrey C. (Swampscott MA) Manteiga John A. (North Andover MA), Gas turbine engine ignition flameholder with internal impingement cooling.
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Abreu Mario E. (South Peabody MA), Gas-cooled flameholder assembly.
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Moore George W. (Palm Beach Gardens FL), Liquid fuel spraybar.
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Nash Dudley O. (Cincinnati OH) Reigel James R. (Cincinnati OH) Stine Frederick J. (Maineville OH), Low turbulence flame holder mount.
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Schulte-Werning Burkhard (Basel CHX), Method and appliance for influencing the wake of combustion chamber inserts.
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DuBell Thomas L. (Palm Beach Gardens FL), Method for distributing augmentor fuel.
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Johnson Kenneth L. (Cincinnati OH) Zlatic Mark S. (Wyoming OH) Grammel ; Jr. Leonard P. (Cincinnati OH) Manteiga John A. (North Andover MA), Thrust augmentor heat shield.
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[미국특허] Method and apparatus for spraying fuel within a gas turbine engine 원문보기

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[미국특허] Method and apparatus for spraying fuel within a gas turbine engine 원문보기

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