Accession Number:

ADD014287

Title:

Advanced Composite Polar Boss.

Descriptive Note:

Patent, Filed 16 Oct 87, patented 1 Aug 89,

Corporate Author:

DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s):

• Reynolds, Hugh M.
• Kawabata, Curt M.

Report Date:

1989-08-01

Pagination or Media Count:

10.0

Abstract:

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.

Descriptors:

• *COMPOSITE MATERIALS
• *PATENTS
• *SOLID PROPELLANT ROCKET ENGINES
• ASSEMBLY
• ATTACHMENT
• ENGINE COMPONENTS
• LEAD TIME
• PROTUBERANCES
• RINGS
• ROCKET ENGINE CASES
• ROCKET NOZZLES
• TEMPERATURE
• WEIGHT REDUCTION

Subject Categories:

• Solid Propellant Rocket Engines
• Laminates and Composite Materials

Distribution Statement:

APPROVED FOR PUBLIC RELEASE