Captive volume device as a safe life monitor
Abstract
The present invention utilizes a closed chamber or structure to enclose a small of amount of a solid propellant whose useful life is to be measured or sensed. The closed chamber forms a captive volume device in which there is included a detecting means. The useful life detecting means may comprise either colorimetric material which change color or a differential pressure device which changes its position in relationship to the useful life of the solid propellant material. A visual viewing port is provided in the captive volume device to allow the state of the detecting means to be observed.
- Publication:
-
Patent Application Department of the Air Force
- Pub Date:
- June 1985
- Bibcode:
- 1985pad..reptU....B
- Keywords:
-
- Colorimetry;
- Monitors;
- Service Life;
- Volume;
- Patent Applications;
- Pressure Gradients;
- Solid Propellants;
- Test Equipment;
- Visual Observation;
- Instrumentation and Photography