Mach 4 performance of hypersonic inlet with rectangular-to-elliptical shape transition

Smart, M. K. and Trexler, C. A. (2004). Mach 4 performance of hypersonic inlet with rectangular-to-elliptical shape transition. In: Journal of Propulsion and Power. 41st Aerospace Sciences Meeting, Reno, Nevada, (288-293). 6th - 9th Jan 2003. doi:10.2514/1.1296


Author Smart, M. K.
Trexler, C. A.
Title of paper Mach 4 performance of hypersonic inlet with rectangular-to-elliptical shape transition
Conference name 41st Aerospace Sciences Meeting
Conference location Reno, Nevada
Conference dates 6th - 9th Jan 2003
Proceedings title Journal of Propulsion and Power   Check publisher's open access policy
Journal name Journal of Propulsion and Power   Check publisher's open access policy
Place of Publication Reston, VA, U. S. A.
Publisher American Institute of Aeronautics and Astronautics (AIAA)
Publication Year 2004
Sub-type Fully published paper
DOI 10.2514/1.1296
ISSN 0748-4658
1533-3876
Volume 20
Issue 2
Start page 288
End page 293
Total pages 6
Language eng
Abstract/Summary Wind-tunnel testing of a hypersonic inlet with rectangular-to-elliptical shape transition has been conducted at Mach 4.0. This fixed geometry inlet had a geometric contraction ratio of 4.8 and was designed using a quasi-streamline tracing technique to have a design point of Mach 5.7. These tests were performed to investigate the starting and backpressure limits of the inlet at conditions well below its design point. Results showed that the inlet required side spillage holes in order to self-start at Mach 4.0. Once started, the inlet generated a compression ratio of 12.6, captured almost 80% of available air and withstood a backpressure ratio of 30.3 relative to tunnel static pressure. The spillage penalty for self-starting was estimated to be 3.4% of available air. These experimental results, along with previous experimental results at Mach 6.2, indicate that fixed-geometry inlets with rectangular-to-elliptical shape transition are a viable configuration for airframe-integrated scramjets that operate over a significant Mach-number range.
Subjects 0901 Aerospace Engineering
Q-Index Code E1

 
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Created: Wed, 17 Oct 2007, 22:44:22 EST