Reactions and expansion of hypergolic propellants in a vacuum.
Reactions and expansion of hypergolic rocket propellants in vacuum
Engineering topics
Publications and source records attributed to Gift, R. D..
Reactions and expansion of hypergolic rocket propellants in vacuum
Adverse effects of liquid propellant leakage past control valves in vacuum environment
Reactivity and expansion characteristics of Aerozine-50 and nitrogen tetroxide from vacuum chamber tests
Liquid propulsion systems operating in space and resulting problems of phase transformation, noting plug formation and flow stoppage
Leakage through propellant valves into injector flow passages and combustion chambers in vacuum
Liquid propulsion systems operating in space and resulting problems of phase transformation, noting plug formation and flow stoppage
Performance of propellant valve actuating system for lunar excursion module descent and ascent engines in vacuum environment
Adverse effects of aerozine-50 leakage through propellant valves into injector manifolds exposed to vacuum environment
Propellant evaporative freezing in rocket engine manifolds
The mechanisms of evaporative freezing of leaking propellant and the creation of flow stoppages within injector manifolds is discussed. A quantitative analysis of the conditions, including the existence of minimum and maximum leak rates, for the accumulation of evaporatively frozen propellant is presented. Clogging of the injector manifolds of the Apollo SPS and the Gemini OAMS engines by the freezing of leaking propellant is predicted and the seriousness of the consequences are discussed. Based on the analysis a realistic evaluation of selected techniques to eliminate flow stoppages by frozen propellant is made.
Propellant valve leakage and propellant flow system freezing and blockage when exposed to vacuum environment in Apollo service module engine