REVERSE BULGED FORWARD ACTING SCORED RUPTURE DISC BULKHEAD STRUCTURE FOR MULTI-STAGE ROCKET MOTOR

摘要

Rupture disc bulkhead structure (24) for the use in a multi-stage rocket motor for missiles or the like wherein the disc (34) is supported by a multiple apertured backup member (36). The disc has a series of bulges (54) which define dimples that conform to the configuration of the apertures (52) in the backup member. Bulging of the disc is carried out under a pressure exceeding that of the withstand pressure of the supported disc. Score lines (42, 44) in the disc aligned with the support segments (56) of the apertured backup member permit the disc to rupture and open at a pressure significantly lower than the back pressure with stand value. The construction provides a bulkhead structure which will withstand back pressures in the range of 2,000 to 10,000 static psig yet full open in a forward direction at a static pressure of no more than about 100 to 400 psig.