US 12,291,337 B2
Aircraft hybrid cooling system
Alan F. Retersdorf, Avon, CT (US)
Assigned to RTX Corporation, Farmington, CT (US)
Filed by Raytheon Technologies Corporation, Farmington, CT (US)
Filed on Feb. 18, 2022, as Appl. No. 17/675,138.
Prior Publication US 2023/0264818 A1, Aug. 24, 2023
Int. Cl. B64D 13/06 (2006.01); F02C 9/18 (2006.01); F02K 3/00 (2006.01); F25B 9/00 (2006.01); F25B 25/00 (2006.01)
CPC B64D 13/06 (2013.01) [F02C 9/18 (2013.01); F02K 3/00 (2013.01); F25B 9/004 (2013.01); F25B 25/005 (2013.01); B64D 2013/0618 (2013.01); B64D 2013/0644 (2013.01); B64D 2013/0648 (2013.01); B64D 2013/0674 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An environmental control system (ECS) for use with a gas turbine engine, the ECS comprising:
an air cycle system (ACS); and
a vapor cycle system (VCS),
wherein:
the VCS comprises along a vapor compression flowpath:
a VCS compressor;
a heat donor leg of a VCS condenser;
an expansion device; and
a heat receiving leg of a VCS evaporator; and
the ACS comprises along a bleed flowpath:
a bleed air inlet;
a primary heat exchanger;
an ACS compressor;
a secondary heat exchanger;
a first turbine coupled to the ACS compressor to drive the ACS compressor;
a heat donor leg of the VCS evaporator;
a water collector;
a heat receiving leg of the VCS condenser; and
a second turbine; and
the VCS compressor is a motor-driven compressor; and
the bleed flowpath passes downstream from the heat receiving leg of the VCS condenser to the second turbine.