- Author
- Felton, R. F.
- Title
- Technique to Measure the Irradiance of a Burning Solid Propellant Surface. Research Report. October 1968-October 1970.
- Coporate
- Air Force Rocket Propulsion Lab., Edwards AFB, CA
- Report
- AFRPL-TR-71-40; Project 305910ATF, April 1971, 133 p.
- Distribution
- Available from National Technical Information Service
- Keywords
- solid propellants | irradiance | smoke | burning rate | radiation measurements | flame radiation | reflectance
- Identifiers
- smoke elimination
- Abstract
- A simple, reliable experimental technique has been developed to measure the irradiance of the burning surface of a solid propellant. It incorporates an optical lightpipe to transmit incident radiant energy to a radiation detector. The detector used for the majority of the development tests was a solid state silicon detector with a time constant of less than 500 microseconds. The lightpipe was positioned in a dead end channel (open to the back) that had been cast into a propellant sample. Measurements were made when the burning surface had receded to and burned through the end of the channel.