Accession Number : ADD014136

Title :   Captive Volume Device as a Safe Life Monitor.

Descriptive Note : Patent, Filed 27 Jun 85, patented 18 Apr 89,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Borgardt, Frank G

Report Date : 18 Apr 1989

Pagination or Media Count : 5

Abstract : A captive volume device containing a small amount of solid propellant and a safe life indicator such as a colorimeter material or a differential pressure sensor is disclosed. As the propellant deteriorates, it expends a gas which changes the color of the colorimeter material or causes the differential pressure sensor to alter its position, indicating that the propellant material is useless. The present invention utilizes a closed chamber or structure to enclose a small of amount of a solid propellant. The closed chamber forms a captive volume device in which there is included a detecting means. Keywords: Solid rocket propellants; Solid propellant rocket engines; Patents. (AW)

Descriptors :   *PATENTS, *SOLID ROCKET PROPELLANTS, *PRESSURE MEASUREMENT, *COLORIMETERS, *LIFE TESTS, CLOSED ECOLOGICAL SYSTEMS, DETECTORS, MATERIALS, PRESSURE GRADIENTS, PROPELLANTS, SOLID PROPELLANT ROCKET ENGINES, SOLID PROPELLANTS, VOLUME, GAS EVOLUTION

Subject Categories : Solid Rocket Propellants
      Test Facilities, Equipment and Methods
      Solid Propellant Rocket Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE