Patent ID: 9003814
Filing Date: 2015-04-14
Classification: B64D,Y02T

Abstract:
1. A method for operating an air-conditioning system for an aircraft comprising: compressing ambient air with a compressor driven by a shaft in communication with a motor and a turbine; forwarding the compressed air to an aircraft cabin for circulation; removing circulated compressed air from the aircraft cabin; forwarding the circulated compressed air to the turbine; depressurizing the circulated compressed air in the turbine; capturing energy created by depressurizing the circulated compressed air; receiving an available power level from a control system of the aircraft, wherein the available power level includes the captured energy from depressurizing the circulated compressed air and wherein the captured energy provides approximately twenty percent of a total power requirement of the compressor; and based on a determination that the available power level exceeds a threshold value, forwarding air from a second compressed air source to the aircraft cabin.