公开(公告)号：US11884408B2

公开(公告)日：2024-01-30

申请号：US17539479

申请日：2021-12-01

Applicant: GOODRICH CORPORATION

Inventor： Brian Wilson ,  Kaylyn Beseler

IPC: B64D25/10 ,  F02K9/34 ,  F02K9/12 ,  F02K9/18 ,  F02K9/28 ,  F02K9/26

CPC classification number: B64D25/10 ,  F02K9/12 ,  F02K9/18 ,  F02K9/26 ,  F02K9/28 ,  F02K9/346

Abstract: A solid propellant propulsion motor may comprise: a forward propellant grain extending along a longitudinal axis of a motor case between a forward end of the motor case and a first burn inhibitor layer in the motor case; the first burn inhibitor layer disposed axially adjacent to the forward propellant grain; an aft propellant grain disposed axially adjacent to the first burn inhibitor layer; a second burn inhibitor layer disposed axially adjacent to an aft end of the aft propellant grain; and an ablative material layer disposed on a radially inner surface of the aft propellant grain.