Main engine start by means of an aircraft air conditioning system
AssigneeAirbus Operations GmbH
InventorsJan Barkowsky, Jan Dittmar
Life of this patent
Estimating the term…
Abstract
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 of compressed air from a bleed air system, noise pollution on the ground is reduced.
Claims13
An air conditioning system for an aircraft, comprising:
- at least one air conditioning pack based on an air cycle method, 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.
An engine start system for an aircraft, comprising:
- a starter turbine;
- a compressed-air line connectable to a compressor of an air conditioning pack based on an air cycle method;
- an air conditioning valve for interrupting the connection between the compressed-air line and a cabin air supply;
- and
- a start valve for interrupting a connection between the compressed-air line and the starter turbine.
A method for starting an engine of an aircraft, comprising:
- closing an air conditioning valve that separates 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;
- and
- opening the air conditioning valve.
Dependencies are inferred from the claim text.