Analytical and Experimental Investigation of Supersonic Injectors with Large Secondary Mass Flows

摘要

A series of experimental tests were performed with air:air constant area supersonic injectors, and typical results are presented here. Data were taken with secondary mass flows, both larger and smaller in magnitude than the primary mass flow. One of the constant area injectors produced a remarkable pumping efficiency of 30% with equal mass flows in the primary and secondary. A special constant area mixing tube was constructed and tested. This test indicated a ratio 5