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Elimination of buffeting on the rear fuselage of the Hercules Tanker

Published online by Cambridge University Press:  04 July 2016

D.G Mabey*
Affiliation:
Dynamics Laboratory, Royal Aircraft Establishment, Bedford

Summary

The conversion of the Hercules aircraft for flight refuelling necessitated the installation of a small drogue box on the lower surface of the rear fuselage. This produced a long flow separation and unacceptable rear fuselage and elevator buffeting at the drogue towing speeds required.

The flow separation was stabilised, and the buffeting eliminated, by the installation of strakes and the provision of a small bleed flow through the drogue box.

Type
Research Article
Copyright
Copyright © Royal Aeronautical Society 1985 

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References

1. Peake, D. J. The flows about upswept rear fuselages of typical cargo aircraft. Canadian NRC, DME/NAE Quarterly Bulletin. 1968, No 3. 3197.Google Scholar
2. Anon. Composite strakes tested on C-130. Aviation Week and Space Technology, February 20th 1984,41,Google Scholar
3. Bearman, P. W. Investigation into the effect of base bleed on the flow behind a two-dimensional model with a blunt trailing-edge. AGARD CP4 Part 2,479-507.Google Scholar