US 12,292,007 B2
Hydrogen leak detection system for an aircraft propulsion system
Assaf Farah, Brossard (CA)
Assigned to PRATT & WHITNEY CANADA CORP., Longueuil (CA)
Filed by Pratt & Whitney Canada Corp., Longueuil (CA)
Filed on Sep. 22, 2023, as Appl. No. 18/371,876.
Prior Publication US 2025/0101923 A1, Mar. 27, 2025
Int. Cl. F02C 9/28 (2006.01); B64D 45/00 (2006.01); F02D 41/22 (2006.01); G01M 3/32 (2006.01)
CPC F02C 9/28 (2013.01) [B64D 45/00 (2013.01); F02D 41/22 (2013.01); G01M 3/3263 (2013.01); B64D 2045/0085 (2013.01); F02D 2041/225 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A hydrogen supply assembly for an aircraft propulsion system, the hydrogen supply assembly comprising:
a storage housing surrounding and forming a storage plenum;
a hydrogen supply component disposed within the storage housing coincident with the storage plenum; and
a leak detection system including an interior pressure sensor, an exterior pressure sensor, a purge assembly, and a controller, the interior pressure sensor is connected in fluid communication with the storage plenum, the exterior pressure sensor is connected in fluid communication with an ambient atmosphere outside the storage housing, the purge assembly including a control valve mounted on the storage housing, the control valve connected in fluid communication with the storage plenum, the control valve positionable in a closed position and an open position, the control valve is configured to purge the storage plenum in the open position, and the controller includes a processor in communication with a non-transitory memory storing instructions, which instructions when executed by the processor, cause the processor to:
determine a differential pressure between the storage plenum and the ambient atmosphere with the interior pressure sensor and the exterior pressure sensor; and
identify a presence or an absence of hydrogen leakage from the hydrogen supply component to the storage plenum by comparing the determined differential pressure to a first differential pressure threshold, the presence of hydrogen leakage identified by the determined differential pressure greater than or equal to the differential pressure threshold.