Method of Constructing a Dome Restraint Assembly for Rocket Motors.
DEPARTMENT OF THE AIR FORCE WASHINGTON DC
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This report discusses an adjustable restraint assembly connectable between a dome portion of a solid propellant rocket motor casing and a rigid base or support, for use during the curing of a propellant in the casing. The assembly includes an upper attach bracket connectable to the dome portion, a lower attach bracket connectable to a rigid base, upper and lower flanges connected to the upper and lower brackets, respectively, and an adjustable threaded turn-buckle-like member connected between the flanges. The assembly is used to establish a maximum net down-ward deflection of the dome portion upon maximum pressurization of the uncured propellant in the motor casing and is thereafter adjusted at various times during the curing process to reduce and ultimately eliminate the deflection in increments to thereby improve the bond between the grains of the cured propellant and the casing in the region of the forward dome.
- Solid Propellant Rocket Engines