US 11,891,953 B2
Aircraft skin heat exchanger
Jon E. Sobanski, Glastonbury, CT (US); and Paul R. Hanrahan, Sedona, AZ (US)
Assigned to RTX CORPORATION, Farmington, CT (US)
Filed by Raytheon Technologies Corporation, Farmington, CT (US)
Filed on Jan. 26, 2022, as Appl. No. 17/584,909.
Prior Publication US 2023/0235699 A1, Jul. 27, 2023
Int. Cl. F02C 7/12 (2006.01); B64D 33/08 (2006.01); F28D 7/00 (2006.01)
CPC F02C 7/12 (2013.01) [B64D 33/08 (2013.01); F28D 7/0041 (2013.01); F05D 2260/213 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An aircraft heat exchanger system comprising:
a first heat exchanger assembly disposed in an inlet duct assembly, the inlet duct assembly comprising an inlet opening through a bottom outer surface of an aircraft structure, the first heat exchanger assembly in thermal communication with an inlet airflow flowing through the inlet duct assembly; and
a skin heat exchanger assembly disposed along the bottom outer surface of the aircraft structure, the skin heat exchanger assembly offset relative to the inlet duct assembly and the first heat exchanger assembly, the skin heat exchanger assembly in fluid communication with the first heat exchanger assembly such that a working fluid is communicated therebetween.
 
13. An aircraft system comprising:
a propulsor assembly disposed in an aircraft structure;
an inlet duct assembly configured to communicate airflow to the propulsor assembly, the inlet duct assembly comprising an inlet opening through a bottom outer surface of the aircraft structure;
a first heat exchanger assembly disposed in the inlet duct assembly and in thermal communication with an inlet airflow flowing through the inlet duct assembly; and
a skin heat exchanger assembly disposed along the bottom outer surface of the aircraft structure in thermal communication with the bottom outer surface of the aircraft structure and in fluid communication with the first heat exchanger assembly such that a working fluid is communicated therebetween, wherein the skin heat exchanger assembly is offset relative to the inlet duct assembly and the first heat exchanger assembly.