Plume Interference Assessment and Mitigation
Abstract:
The primary purpose of the rocket plume diagnostic program is to investigate the high-altitude near-field radiance signature of rocket motors, and to develop the diagnostic techniques required to characterize various types of rocket plumes. The design, calibration, and installation of a cold-optics LWIR detecting system on one of the Calspan high-altitude test chambers is discussed. Particulate flux measurement techniques are discussed, and the design and development of research rocket motors for use with specific propellant combinations is presented. A test program for small liquid and solid thrusters, such as those proposed for the FAIR II PIE flight program, has been initiated, and experimental data for a monopropellant hydrazine thruster are presented and compared with IR radiance predictions.