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http://dx.doi.org/10.6108/KSPE.2017.21.3.001

Thrust and Aerodynamic Load Characteristics of an Internal Pintle Thruster  

Choi, Junsub (Department of Aerospace Engineering, Graduate School at Chungnam National University)
Kim, Dongyeon (Department of Aerospace Engineering, Graduate School at Chungnam National University)
Huh, Hwanil (Department of Aerospace Engineering, Chungnam National University)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.21, no.3, 2017 , pp. 1-9 More about this Journal
Abstract
Numerical computations are performed to investigate the effect of pintle stroke on the performance of an internal pintle thruster. Results show that the thrust control ratio was less than 2% and the aerodynamic load ratio was 22% as the pintle stroke increased. The flow past the nozzle throat rapidly expanding because of the shape of the pintle, and a shock wave was generated. Particularly, at the pintle stroke distance of 4 and 5 mm, the shock wave hit the wall of the nozzle, results in peeling bubbles. Depending on the altitude, the thrust increased and the aerodynamic load decreased, but the difference was as small as 1.5%. In the presence of the bore, the reduction of the pintle tip area resulted in a decrease in aerodynamic load.
Keywords
Computational Fluid Dynamics; Internal Pintle Thruster; Pintle Stroke; Thrust; Aerodynamic Load;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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