Application of radical farming to a 3-D scramjet at Mach 8

Turner, James C. and Smart, Michael K. (2008). Application of radical farming to a 3-D scramjet at Mach 8. In: 2008 AIAA Meeting Papers on Disc. 46th AIAA Aerospace Sciences Meeting and Exhibit, Reno, U.S.A, (). 7-10 January, 2008.

Author Turner, James C.
Smart, Michael K.
Title of paper Application of radical farming to a 3-D scramjet at Mach 8
Conference name 46th AIAA Aerospace Sciences Meeting and Exhibit
Conference location Reno, U.S.A
Conference dates 7-10 January, 2008
Proceedings title 2008 AIAA Meeting Papers on Disc
Journal name 46th AIAA Aerospace Sciences Meeting and Exhibit
Publisher American Institute of Aeronautics and Astronautics
Publication Year 2008
Sub-type Fully published paper
ISBN 1563479370
9781563479373
Volume 13
Issue 1
Total pages 1
Language eng
Formatted Abstract/Summary  An experimental investigation has been conducted for a hydrogen-fueled scramjet with a rectangular-to-elliptical shape transition (REST) inlet and an elliptical combustion chamber. A test flow simulating a Mach 8.1 flight condition at an altitude of 30km was used. The purpose was to determine the feasibility of using inlet injection together with the radical farming technique to promote combustion in a three-dimensional scramjet. The REST inlet had a total geometric contraction ratio of 5.68, of which 2.08 was internal. The elliptical combustor diverged to an area ratio of 2.0 following a short constant area section. An elliptical thrust nozzle with an area ratio of 5.0 completed the flowpath. Hydrogen fuel was injected into the model via porthole injectors at 45° to the scramjet walls. Inlet injection produced robust combustion up to an equivalence ratio of 0.72, above which the engine un-started. More traditional fuel injection at the combustor entrance produced supersonic combustion up to an equivalence ratio of 0.83, but at lower thrust levels due to mixing limitations. These preliminary experiments suggest that fuel injection in the inlet is a promising concept for higher speed scramjet applications.
Subjects 0901 Aerospace Engineering
Keyword Hydrogen-fueled scramjet
Inlet injection
Radical farming
Mach 8
Q-Index Code EX
Q-Index Status Provisional Code
Additional Notes 1 DVD-ROM.

 
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Created: Tue, 19 Jan 2010, 13:55:44 EST by Tara Johnson on behalf of Faculty Of Engineering, Architecture & Info Tech