This paper discusses the structure of the flow within the engine inlet of an uninhabited combat air vehicle (UCAV). The UCAV features a top-mounted, serpentine inlet leading to an engine buried within the fuselage. The performance of the inlet is found to depend strongly on a flow separation that occurs within the inlet. Both the time-averaged and the unsteady structure of this separation is studied, and an argument relating the inlet performance to the behaviour of this separation is suggested. The results presented in this paper also suggest that there are considerable aerodynamic limitations to further shortening or narrowing of the inlet. Since there are substantial, system level benefits from using a smaller inlet, the case for separated flow control therefore appears clear.
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ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference
July 6–10, 2003
Honolulu, Hawaii, USA
Conference Sponsors:
- Fluids Engineering Division
ISBN:
0-7918-3696-7
PROCEEDINGS PAPER
Flow Separation Within the Engine Inlet of an Uninhabited Combat Air Vehicle (UCAV)
Michael J. Brear,
Michael J. Brear
University of Melbourne, Melbourne, VIC, Australia
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Zachary Warfield,
Zachary Warfield
Jet Propulsion Laboratory
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John F. Mangus,
John F. Mangus
Northrop Grumman Corporation
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James D. Paduano,
James D. Paduano
Massachusetts Institute of Technology, Cambridge, MA
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Jeffry S. Philhower
Jeffry S. Philhower
Northrop Grumman Corporation
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Michael J. Brear
University of Melbourne, Melbourne, VIC, Australia
Zachary Warfield
Jet Propulsion Laboratory
John F. Mangus
Northrop Grumman Corporation
Steve Braddom
West Point, West Point, NY
James D. Paduano
Massachusetts Institute of Technology, Cambridge, MA
Jeffry S. Philhower
Northrop Grumman Corporation
Paper No:
FEDSM2003-45579, pp. 1035-1042; 8 pages
Published Online:
February 4, 2009
Citation
Brear, MJ, Warfield, Z, Mangus, JF, Braddom, S, Paduano, JD, & Philhower, JS. "Flow Separation Within the Engine Inlet of an Uninhabited Combat Air Vehicle (UCAV)." Proceedings of the ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference. Volume 1: Fora, Parts A, B, C, and D. Honolulu, Hawaii, USA. July 6–10, 2003. pp. 1035-1042. ASME. https://doi.org/10.1115/FEDSM2003-45579
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