A HYBRID ECS ARCHITECTURE TO REDUCE ENGINE BLEED DEPENDENCY FOR AIRCRAFT CABIN PRESSURE AND TEMPERATURE CONTROL

摘要

An environmental control system includes an ambient air conduit (104) and a bleed air conduit (102), an electric compressor (110) connected to the ambient air conduit and a mechanical compressor (130) connected to the electric compressor. The electric compressor is supported for rotation independent of the mechanical compressor. A turbine is operatively connected to the mechanical compressor, the turbine connected to both the ambient air conduit and the bleed air conduit to provide conditioned air to a conditioned air conduit. Computer program products and methods of providing conditioned air to conditioned air loads are also described.