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Mutual interference between jets and intakes in STOVL aircraft

Published online by Cambridge University Press:  04 July 2016

A. J. Saddington  and
K. Knowles
A. J. Saddington
Affiliation:
Aeromechanical Systems GroupCranfield University, RMCS Shrivenham, UK
K. Knowles
Affiliation:
Aeromechanical Systems GroupCranfield University, RMCS Shrivenham, UK
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Abstract

A series of experiments has been performed in an open-jet wind tunnel on a generic jet-lift STOVL aircraft in transition out of ground effect. In order to obtain information about the forces acting on the aircraft, static pressure measurements were made on the wing and intake lips. The model tested was equipped with a single vectored lift-jet and ‘powered’ intakes. Tests were conducted at a variety of nozzle pressure ratios and effective velocity ratios.

The experiments conclude that a mutual interference exists between the jet and intake flows which generates non-linearly-additive loads on the airframe. This questions the validity of testing jets and intakes separately on a STOVL aircraft of this type.

Type
Research Article
Information
The Aeronautical Journal , Volume 103 , Issue 1024 , June 1999 , pp. 281 - 286
Copyright
Copyright © Royal Aeronautical Society 1999 

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References

1. Harris, A.E., Wilde, G.L., Smith, V.J., Mundell, A.R.G. and Davidson, D.P. ASTOVL model engine simulators for wind tunnel research, AGARD Conference Proceedings CP-498, Fluid Dynamics Panel Symposium, Fort Worth, Texas, USA, 7-10 October 1991, pp 15.1–15.10.Google Scholar
2. Kuhn, R.E. and McKinney, M.O. NASA research on the aerodynamics of jet VTOL installations, AGARDograph 103, specialists meeting, Tennessee, USA, 25-27 October 1965, pp 689–713.Google Scholar
3. MacLean, R., Sullivan, J. and Murthy, S.N.B. Hot gas environment around STOVL aircraft in ground proximity — part I: experimental study, paper no. 90-2269, Proceedings of the AIAA/SAE/ASME/ASEE 26th Joint Propulsion Conference, Orlando, Florida, USA, 16-18 July 1990.Google Scholar
4. Mineck, R.E. and Margason, R.J. Pressure distribution on a vectored thrust V/STOL fighter in the transition-speed range, NASA Technical Memorandum TM X-2867, 1973.Google Scholar
5. Mineck, R.E. and Schwendemann, M.F. Aerodynamic characteristics of a vectored thrust V/STOL fighter in the transition-speed range, NASA Technical Note TN D-7191, 1973.Google Scholar
6. Arts, T., Carbonaro, M. and Van den Braebusschen, R. Measurement techniques in fluid dynamics, Course Notes, Von Karman Institute for Fluid Dynamics, 10-14 October 1994, Chapter III, p 42.Google Scholar
7. Kuenstner, R., Deutenbach, K. and Vagt, J. Measurement of reference dynamic pressure in open-jet automotive wind tunnels, SAE 920344, 24-28 February 1992.Google Scholar
8. Lift-Curve Slope and Aerodynamic Centre Position of Wings in Inviscid Subsonic Flow, ESDU 70011, 1993.Google Scholar
9. Hammond, A.D. and McLemore, H.C. Hot-gas ingestion and jet interference effects for jet V/STOL aircraft, AGARD Conference Proceedings CP-27, Fluid Dynamics Panel Symposium, Gottingen, Germany, 13-15 September 1967, pp 8.1–8.27.Google Scholar