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公开(公告)号：US3908364A
公开(公告)日：1975-09-30
申请号：US32494073
申请日：1973-01-19
Applicant: UNITED TECHNOLOGIES CORP
Inventor： LEFEBVRE CLARENCE A , SCHOEN LEWIS L
CPC classification number: F02K9/70
Abstract: Rocket motors utilizing putty propellants are provided with means for permitting stress relief of the propellant grain while preventing slump of the initial burning surface. This invention is applicable to both end burning and internal burning propellant configurations.
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