INTERNAL ENVIRONMENT OF SOLID ROCKET NOZZLES
Final technical rept
PHILCO RESEARCH LABS NEWPORT BEACH CA
Pagination or Media Count:
Solid rocket motor nozzle environment was studied in cold flow modeling and in motor firings. The emphasis in the work was on the effects of the condensed phase in wall impingement and radiation. In motor firings using H2 - O2 - Al2O3 - H2O, emissivity values for the alumina were determined. Then radiation heat flux scaling relationships were developed for application to any size motor. Particle impingement was studied in firing with a molybdenum nozzle fitted with thermocouples from which local transient heat flux data were developed. High heat flux rates due to impingement were determined. In cold flow studies particle impingement rates and statiic pressure values for input to corrective analysis were determined. Analyses of heat flux modes in a large motor nozzle and in a gimballed nozzle were determined. A large part of the work involved technique development in handling micron-sized particles in firings and in cold flow. A particle sampler was developed for sampling motor exhausts.
- Solid Propellant Rocket Engines