Main engine start by means of an aircraft air conditioning system

摘要

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.

主权项

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; and supplying bleed air from at least the engine to the compressor.