Accession Number : ADD014074

Title :   Contemporary Composite Polar Boss.

Descriptive Note : Patent, Filed 16 Oct 87, patented 28 Feb 89,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Reynolds, Hugh M ; Kawabata, Curt M

Report Date : 28 Feb 1989

Pagination or Media Count : 9

Abstract : Composite polar bosses applied in rocket motor cases have very desirable characteristics. The lead time for a boss can be reduced from 6-12 months to 2-3 months. Weight savings for the boss are about 20-40%. A composite polar boss which attaches closures 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 closure to be attached thereto. The materials of the boss are selected to permit a service temperature of 350 degrees F. Patents. (JES)

Descriptors :   *ROCKET ENGINE CASES, LEAD TIME, PATENTS, TEMPERATURE, WEIGHT REDUCTION

Subject Categories : Rocket Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE