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Advanced Composite Polar Boss.
Patent, Filed 16 Oct 87, patented 1 Aug 89,
DEPARTMENT OF THE AIR FORCE WASHINGTON DC
Pagination or Media Count:
Composite polar bosses applied in rocket motor cases have desirable characteristics. The lead time for a boss can be reduced from 6-12 months to 4-6 months. Weight savings for the bossnozzle assembly are about 20-40 percent. A composite polar boss which attaches nozzle assemblies to solid fueled rocket motor cases is disclosed. This polar boss is a carbonized fabrication which sits within a circumferential indentation within the motor case, and has a threaded inner circumference which permits the nozzle assembly to be attached thereto. The materials of the boss are selected to permit a service temperature of up to 3,200 degrees F. Keywords Patents Solid propellant Rocket engines Rocket engine cases Composite materials Weight reduction Rocket nozzles.
APPROVED FOR PUBLIC RELEASE