Spectral Radiance Measurements of Exhaust Plumes from Scale Model Rocket Engines

Abstract

A short duration experimental technique for investigating radiative properties of rocket exhaust plumes at high altitudes is described. Experimental measurements of the spectral radiance of two interacting exhaust plumes generated by $\frac{1}{45}$ scale F–1 engines burning gaseous ethylene and oxygen are presented. In addition, the spectral radiance characteristics of several Saturn auxiliary solid propellant rocket motors have also been measured and these results are included. The measurements were obtained with a rapid scanning ir spectrometer.

© 1968 Optical Society of America

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