FIELD: rocketry. SUBSTANCE: detachable joint is designed for separation of cryogenic lines. Proposed detachable joint comprises support ring with conical surface. The latter contacts with inner bead of collet. Support ring is installed on outer surface of on-board union. Sleeve is installed on inner surface of locking bushing. Said sleeve is in contact with outer of collet. Hardness of support ring material is equal to hardness of collet. Sleeve is made of material featuring high antifriction properties. EFFECT: reduced consumption of fuel components of rocket propellant owing to reduced mechanical forces at separation. 1 dwg
