Inlet fuel injection in a mach 12 shape-transitioning scramjet

Barth, James E., Wheatley, Vincent and Smart, Michael K. (2014). Inlet fuel injection in a mach 12 shape-transitioning scramjet. In: Proceedings of: 52nd AIAA Aerospace Sciences Meeting - AIAA Science and Technology Forum and Exposition, SciTech 2014. 52nd AIAA Aerospace Sciences Meeting, National Harbor, MD, United States, (1-26). 13-17 January 2014. doi:10.2514/6.2014-1159


Author Barth, James E.
Wheatley, Vincent
Smart, Michael K.
Title of paper Inlet fuel injection in a mach 12 shape-transitioning scramjet
Conference name 52nd AIAA Aerospace Sciences Meeting
Conference location National Harbor, MD, United States
Conference dates 13-17 January 2014
Convener Robert D. Braun
Proceedings title Proceedings of: 52nd AIAA Aerospace Sciences Meeting - AIAA Science and Technology Forum and Exposition, SciTech 2014
Journal name 52nd AIAA Aerospace Sciences Meeting - AIAA Science and Technology Forum and Exposition, SciTech 2014
Place of Publication Reston, VA, United States
Publisher American Institute of Aeronautics and Astronautics
Publication Year 2014
Year available 2014
Sub-type Fully published paper
DOI 10.2514/6.2014-1159
Open Access Status
ISBN 9781624102561
Start page 1
End page 26
Total pages 26
Collection year 2015
Language eng
Formatted Abstract/Summary
A Rectangular-to-Elliptical Shape Transitioning (REST) scramjet inlet designed for fight at Mach 12 was simulated with and without hydrogen fuel injection along the body-side compression surface, to investigate the feasibility of inlet injection in a practical scramjet configuration. The observed flowfields show that at an equivalence ratio of 0.3, the fuel jets cannot escape the body-side boundary layer, and have little effect on inlet flow structures. Because of this turbulent boundary layer, fuel mixing efficiency is greater than 80% by the end of the inlet. Combustion is observed in the near-constant area section near the end of the inlet, with a fuel-based combustion efficiency of 52%. Inlet drag increased less than 6%, showing that inlet fuelling provides efficient mixing and combustion on the body side of the engine, thermal compression of the remaining flow, and provides a pilot for fuel injected further downstream, without significantly increasing engine losses.
Subjects 1912 Space and Planetary Science
2202 History and Philosophy of Specific Fields
Q-Index Code EX
Q-Index Status Confirmed Code
Institutional Status UQ

 
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Created: Tue, 08 Jul 2014, 02:34:19 EST by System User on behalf of School of Mechanical and Mining Engineering