Title
erformance Analyses of HPDP 250K Hybrids Author(s)
ark, O. Y.; Bryant, C. T.; Carpenter, R. L. Abstract:The Hybrid Propulsion Demonstration Program (HPDP) was formed to develop hybrid propulsion technology to a maturity level required to enable the propulsion industry to commercialize hybrid boosters for various space launch applications. The program culminated in a series of large-scale 250,000 lbf hybrid motor development tests. Three tests with two 250K Hybrid Motors have been recently conducted at NASA's Stennis Space Center utilizing two different Forward End configurations and a HTPB, LOx propellant system. Ballistic characterizations. motor performance analyses and stability are presented. The documented combustion instabilities in these hybrid combustion tests have been investigated based on the data obtained. Resonance between two different pressure fluctuations, one in the Forward End and the other in the After End, was analyzed and evaluated. NASA Center:Marshall Space Flight Center Publication Date:[2000]