US 12,492,648 B2
Modulated air-cooled heat exchanger for hybrid electric thermal management systems
Thomas E. Clark, Wells, ME (US); Bryan Kupferman, Norwalk, CT (US); and Ethan K. Stearns, Lebanon, CT (US)
Assigned to RTX Corporation, Farmington, CT (US)
Filed by RTX Corporation, Farmington, CT (US)
Filed on May 17, 2024, as Appl. No. 18/667,722.
Prior Publication US 2025/0354500 A1, Nov. 20, 2025
Int. Cl. F01D 25/12 (2006.01); F01D 17/12 (2006.01)
CPC F01D 25/12 (2013.01) [F01D 17/12 (2013.01); F05D 2220/36 (2013.01); F05D 2260/213 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a fan section configured to generate an airflow;
a heat exchanger configured to transfer heat from a thermal management system to the airflow; and
an inlet door configured to modulate the airflow to the heat exchanger,
wherein the inlet door includes a housing and is configured to operate in a fully modulated state with a first opening partially exposed outside of the housing, a second opening partially exposed outside of the housing, and a third opening exposed to an inlet duct of the heat exchanger.