TY - JOUR
T1 - Design, fabrication, and test of a microelectromechanical-system-based millinewton-level hydrazine thruster
AU - Tony, Yuan
AU - Awankana, Li
AU - Berlin, Huang
AU - Yu-Ta, Chen
AU - Cetera, Chen
AU - Segal, C.
N1 - Funding Information:
The authors would like to thank the National Science Council and the National Nano Device Laboratories of the Republic of China for funding and long-term support of the research.
PY - 2011
Y1 - 2011
N2 - The effects of both water and carbon dioxide vitiation on dual-mode scramjet (DMSJ) mode transition were investigated. The duct height and width were 1 and 1.5 in., respectively, and the isolator was 10 in. long, with an additional 0.5 in. prior to the leading edge of the ramp fuel injector. Three pressure distributions were measured while combusting for clean air, air vitiated with 9% H2O, and air vitiated with both 9% H2O and 4% CO2, where all percentages are by mole. Downstream of the fuel injector was a series of reflected shocks and expansion fans that were generated by the ramp fuel injector. There was no combustion induced pressure rise upstream of the ramp fuel injector leading edge. The shock train also became shorter as the flow was increasingly vitiated. The DMSJ operated in the ram mode for the clean air case, the scram mode with an oblique precombustion shock train for the 9% H2O case and in the scram mode with no precombustion shock train for the 9% H2O and 4% CO2 case.
AB - The effects of both water and carbon dioxide vitiation on dual-mode scramjet (DMSJ) mode transition were investigated. The duct height and width were 1 and 1.5 in., respectively, and the isolator was 10 in. long, with an additional 0.5 in. prior to the leading edge of the ramp fuel injector. Three pressure distributions were measured while combusting for clean air, air vitiated with 9% H2O, and air vitiated with both 9% H2O and 4% CO2, where all percentages are by mole. Downstream of the fuel injector was a series of reflected shocks and expansion fans that were generated by the ramp fuel injector. There was no combustion induced pressure rise upstream of the ramp fuel injector leading edge. The shock train also became shorter as the flow was increasingly vitiated. The DMSJ operated in the ram mode for the clean air case, the scram mode with an oblique precombustion shock train for the 9% H2O case and in the scram mode with no precombustion shock train for the 9% H2O and 4% CO2 case.
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U2 - 10.2514/1.50055
DO - 10.2514/1.50055
M3 - Article
AN - SCOPUS:79952911765
VL - 27
SP - 509
EP - 512
JO - Journal of Propulsion and Power
JF - Journal of Propulsion and Power
SN - 0748-4658
IS - 2
ER -