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AssigneeAgency for Defense Development
InventorsWon Hoon Kim, Jung Rok Oh, Won Man Cho, Gwang Hwan Oh, Tae Ho Lee
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A method for assembling a rocket propulsion motor including a motor case and a nozzle assembly, wherein the assembling is carried out under vacuum so that air can not be presented between a silicon sealant layer and a first O-ring disposed between the motor case and the nozzle assembly, thereby preventing the generation of air passage and air pocket in a silicon sealant layer coated over the assembled portions of the rocket propulsion motor. The silicon sealant is prepared by mixing a silicon sealant material with a setting agent. The mixing is also carried out under vacuum, so as to prevent the sealant from containing air. For venting air from a space defined the silicon sealant layer and the first O-ring under vacuum, a plurality of spacing bolts are used which serve to space the motor case and the nozzle assembly at a predetermined distance.
A method of assembling a rocket propulsion motor having a motor case with an interior and, a nozzle assembly, the motor case having a thermal insulation at an inner periphery surface of the motor case, and, an after dome flange provided with a plurality of threaded holes at an end of the motor case, the nozzle assembly having a thermal insulation at an inner periphery surface of said nozzle assembly, and, a nozzle flange at an outer periphery surface of the nozzle assembly and provided with a plurality of throughout holes and a plurality of threaded spacing holes, each of the throughout holes corresponding to each threaded spacing hole of the motor case to receive a high strength bolt for coupling the nozzle assembly to the motor case, and first and second O-rings spaced apart from each other and disposed at the outer periphery surface of the nozzle flange, the method comprising the steps of:
Dependencies are inferred from the claim text.