Supply of air to an air-conditioning circuit of an aircraft cabin from its turboprop engine

Method for supplying air to an air-conditioning circuit of a cabin of an aircraft that is equipped with at least one turboprop engine comprising at least one low-pressure body and one high-pressure body, at least one of said bodies comprising a compressor, the low-pressure body driving a propulsion propeller by means of a first gearbox mechanically coupled to the propulsion propeller wherein said method comprises the steps involving taking off air from:

• the compressor of the low pressure body of the turboprop engine, when the turboprop engine is a double body turboprop engine comprising one low-pressure body and one high-pressure body, or
• the compressor of the low-pressure body or of an intermediate-pressure body of the turboprop engine, when the turboprop engine is a triple body turboprop engine comprising one low-pressure body, one intermediate pressure body, and one high-pressure body,
• for supplying at least one dedicated load compressor, a rotor of which is mechanically coupled to a shaft of the low pressure body by means of said first gearbox, with the air taken off and driving the rotor of said load compressor by means of the low-pressure body of the turboprop engine.

An aircraft turboprop engine comprising one low-pressure body and one high-pressure body, at least one of said bodies comprising a compressor, the low-pressure body driving a propulsion propeller by means of a first gearbox mechanically coupled to the propulsion propeller, the turboprop engine further comprising means for supplying air to an air-conditioning circuit of an aircraft cabin, wherein said supply means comprise at least one load compressor, the rotor of which is mechanically coupled to a shaft of the low-pressure body by means of said first gearbox, said load compressor comprising an air inlet connected to a single take-off port of the turboprop engine for taking off air from the compressor of the low pressure body of the turboprop engine.

An aircraft turboprop engine comprising one low-pressure body, one high-pressure body, and also an intermediate-pressure body, at least one of said bodies comprising a compressor, the low-pressure body driving a propulsion propeller by means of a first gearbox mechanically coupled to the propulsion propeller, the turboprop engine further comprising means for supplying air to an air-conditioning circuit of an aircraft cabin, wherein said supply means comprise at least one load compressor, the rotor of which is mechanically coupled to a shaft of the low-pressure body by means of said first gearbox, said load compressor comprising an air inlet connected to a single take-off port of the turboprop engine for taking off air from the compressor of the low-pressure body or of the intermediate-pressure body of the turboprop engine.