BURNING RATE CONTROL FACTORS IN SOLID PROPELLANTS
Quarterly summary rept. 11 and 12, 1 Jul-31 Dec 1961
PRINCETON UNIV NJ
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Burning rate measurements for six propellants were completed over a pressure range from 30 to 20,000 psia. All six of the propellants studied displayed relatively low pressure indices of about one-third to one-half over the pressure range up to 2,000 psia but displayed extremely high pressure dependency with exponents of the order of unity or greater for all pressures above 5,000 psia. Photographic studies were conducted of the burning surface of the propellant during actual burning with high optical resolution. It was found possible to photograph the burning surface using electronic flash as illumination source at 11000th second exposure and at a magnification on the film of 5X, with a satisfactory depth of focus. The flame zone is being studied by use of ultrafine thermocouples, imbedded in the propellant strand in a fashion such that the temperature-time history of a station in the burning strand may be resolved as the flame approaches and consumes the propellant at that station.
- Solid Rocket Propellants