Accession Number : ADD008745

Title :   Burst-Pressure Test Fixture for Pressure Vessels Dynamic Rocket Motors.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Betts,Robert E

Report Date : 04 Feb 1981

Pagination or Media Count : 11

Abstract : A method for burst testing a vented pressure vessel is disclosed which accurately measures the true burst pressure of the vented pressure vessel. The method employs a burst-pressure test fixture which is comprised of a plug and a gauge adapter member for substantially plugging the vent opening in a pressure vessel to be burst tested. The plug and gauge adapter member is adapted for receiving a transducer or pressure gauge that is integrally mounted with a pressure gauge tube which is insertably mounted in the plug and gauge adapter member. The vent opening which is substantially plugged with the tube member of the plug and gauge adapter member is free from stress during pressurization to burst pressure. The method requires that the plug and gauge adapter member be stationary, but the vented pressure vessel is allowed to move outwardly along the tube member during dynamic testing. The fit of the plug to the vent opening (i.e., the throat when the pressure vessel is a rocket motor) is a close enough fit as long as the fly off time of the pressure vessel is greater than the pressure rise time to burst pressure.

Descriptors :   Patent applications, *Test fixtures, *Rocket engines, *Pressure vessels, Vents, Plugs, Sealed systems, Pressurization, Bursting strength, Test methods, Pressure gages, Adapters, Measurement, Pressure gradients, Failure

Subject Categories : Test Facilities, Equipment and Methods
      Rocket Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE