(19)

(11)

EP 4 739 913 A1

(12)

(43) Date of publication: 13.05.2026 Bulletin 2026/20 (21) Application number: 23748379.7 (22) Date of filing: 07.07.2023

(51) International Patent Classification (IPC):  F03H 1/00(2006.01) (52) Cooperative Patent Classification (CPC): F03H 1/0075 (86) International application number: PCT/US2023/027097 (87) International publication number: WO 2025/014464 (16.01.2025 Gazette 2025/03)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (71) Applicant: Aerojet Rocketdyne, Inc. Sacramento, CA 95813-6000 (US)	(72) Inventor: TRESCOTT, Jakob Sacramento, California 95813-6000 (US) (74) Representative: Dehns  10 Old Bailey London EC4M 7NG London EC4M 7NG (GB)