Study of time-dependent gas density profile within various modifications of accelerator was initiated; initial measurements showed that no more than 15% of injected propellant was present within accelerator barrel at any one time; propellant injector port modifications were made which raised figure to over 90%; controlled triggering of discharge simultaneous with maximum propellant fraction led to marked increase in engine efficiency; of three techniques for making more than 90% of injected propellant available to discharge, only two seem useful, i.e. use of ball seat for redirecting gas steam, and use of large valve voltages.
Neutral mass density measurements in repetitively pulsed coaxial plasma accelerator
AIAA J
AIAA Journal ; 4 , n 8
1966
5 pages
Aufsatz (Zeitschrift)
Englisch
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