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Numerical Study on Thrust Characteristics of an External Pintle Thruster
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 Title & Authors
Numerical Study on Thrust Characteristics of an External Pintle Thruster
Choi, Junsub; Kim, Dongyeon; Huh, Hwanil;
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 Abstract
Numerical computations were performed to investigate the effects of pintle stroke, altitude, and bore on the performance of an external pintle thruster. Results show that under-expansion flow occurs always, independent of pintle stroke. An external pintle thruster shows good performance in that it is capable of good amount of thrust control, while aerodynamic loads are increased due to shock waves on the pintle support. When altitude is increased to 20 km, the nozzle exit velocity, Mach number, thrust as well as aerodynamic loads are increased. Bore increases aerodynamic load 5.9%, and therefore pintle shape without bore is preferred for lower aerodynamic load of a pintle in order to actuate the pintle.
 Keywords
External Pintle Thruster;Pintle Stroke;Thrust;Aerodynamic Load;
 Language
Korean
 Cited by
 References
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