[특허]Main engine start by means of an aircraft air conditioning system

Airbus Operations GmbH

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Main engine start by means of an aircraft air conditioning system

국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02C-007/26 F02C-006/08 B64D-013/06
미국특허분류(USC)	060/778; 060/782; 060/786
출원번호	US-0788656 (2013-03-07)
등록번호	US-8844296 (2014-09-30)
우선권정보	DE-10 2010 047 971 (2010-10-08)
발명자 / 주소	Barkowsky, Jan Dittmar, Jan
출원인 / 주소	Airbus Operations GmbH
대리인 / 주소	Ingrassia Fisher & Lorenz, P.C.
인용정보	피인용 횟수 : 1 인용 특허 : 7

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An air conditioning system in an aircraft is provided. The system comprises at least one air cycle air-conditioning pack with a compressor comprising a bleed air outlet and with a compressed-air line connected to the bleed air connection, which compressed-air line is connectable to a starter turbine for a main engine. With the use of air from a compressor of an air conditioning pack it is not necessary to switch off the air conditioning pack; bleed air removal from the auxiliary power units becomes obsolete; and, since there is no unnecessary discharge o...

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1. A method for starting engine of an aircraft, comprising: closing an air conditioning valve that separates an outlet of a compressor of an air conditioning pack from a delivery air inlet for a cabin;opening a start valve that connects the output of the compressor to a starter turbine;starting the engine by conveying compressed air from the compressor to the starter turbine;when the engine has reached an operating speed, closing the start valve;opening the air conditioning valve; andsupplying bleed air from at least the engine to the compressor. 2. An engine start system for an aircraft, comprising: an engine;a starter turbine for the engine;a compressed-air line connectable to a compressor of an air conditioning pack using an air cycle system;at least one bleed air line connected to an inlet of the compressor to supply bleed air from at least the engine to the compressor;an air conditioning valve for interrupting the connection between the compressed-air line and a cabin air supply, the air conditioning valve located on the compressed-air line between an outlet of the compressor and a delivery air inlet of the cabin air supply; anda start valve for interrupting a connection between the compressed-air line and the starter turbine, the start valve located on the compressed air line between the outlet of the compressor and an inlet of the starter turbine,wherein the air conditioning valve is closed and the start valve is opened to provide compressed air to the starter turbine to start the engine, and the start valve is closed and the air conditioning valve is opened based on the engine reaching an operating speed, with the bleed air supplied to the compressor after the engine is started. 3. The engine start system of claim 2, further comprising a pressure control valve positioned in the compressed-air line upstream of the starter turbine for limiting the pressure in the compressed-air line. 4. The engine start system of claim 2, further comprising an air conditioning pack for each fuselage side of the aircraft, wherein a compressed-air line each extends from a respective one of the air conditioning packs to an engine in the respective wing half, which engine is to be started. 5. The engine start system of claim 2, wherein a bleed air system of one or several engines is connected to the compressed-air line of the air conditioning pack. 6. The engine start system of claim 4, further comprising a valve for interrupting a connecting line between the compressed-air lines of the air conditioning packs. 7. An air conditioning system for an aircraft, comprising: at least one air conditioning pack using an air cycle system, including a compressor and a compressed-air line connected to the compressor, and the compressed-air line is connectable to a starter turbine for an engine;a start valve that feeds compressed air from the compressed-air line to the starter turbine, the start valve located on the compressed-air line between an outlet of the compressor and an inlet of the starter turbine;at least one bleed air line connected to an inlet of the compressor to supply bleed air from at least the engine to the compressor; andan air conditioning valve that channels compressed air from the compressed-air line to an intermediate cooling device for passing through the air cycle system for supplying the cabin, the air conditioning valve located on the compressed-air line between the outlet of the compressor and the intermediate cooling device for interrupting the connection between the compressed-air line and the intermediate cooling device,wherein the air conditioning valve is closed and the start valve is opened to provide compressed air to the starter turbine to start the engine and the start valve is closed and the air conditioning valve is opened based on the engine reaching an operating speed, with the bleed air supplied to the compressor after the engine is started. 8. The air conditioning system of claim 7, further comprising an air conditioning pack for each fuselage side of the aircraft, wherein a compressed-air line each extends from a respective one of the air conditioning packs to an engine in the respective wing half, which engine is to be started. 9. The air conditioning system of claim 8, wherein the compressed-air lines of the air conditioning packs to the starter turbines in the engines are interconnectable. 10. The air conditioning system of claim 7, wherein a bleed air system of one or several engines is connected to the compressed-air line of the air conditioning pack. 11. The air conditioning system of claim 9, further comprising a valve for interrupting a connecting line between the compressed-air lines of the air conditioning packs. 12. The air conditioning system of claim 7, further comprising a pressure control valve positioned in the compressed-air line upstream from the starter turbine for limiting the pressure in the compressed-air line.

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이 특허를 인용한 특허 피인용횟수: 1

Knight, Glenn A; Maguire, Alan R; Robinson, Daniel; Bostock, George; Wilson, Mark J. Compressor tip injector. USP20181210145387.

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Main engine start by means of an aircraft air conditioning system

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Main engine start by means of an aircraft air conditioning system

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