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Some measurements of gun blast on a Lightning aircraft

Published online by Cambridge University Press:  04 July 2016

D. G. Mabey
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Extract

Previous papers, described the blast loads measured on a long, flat plate near the muzzle of an isolated rifle mounted in a wind tunnel at subsonic and supersonic speeds. For this idealised configuration, these measurements confirmed the validity of the approximate theory due to Frank Smith to predict the level of the blast loads from guns mounted on static or moving aircraft.

However, for real aircraft the gun is generally installed in a blister or fairing and the fuselage adjacent to the muzzle may have considerable curvature. These features, which are different for every installation, modify the blast wave in a way not easily amenable to calculation.

In the present paper the blast loads on the fuselage of a typical fighter aircraft near the muzzle of a cannon were measured in flight at subsonic, transonic and supersonic speeds.

Type
Technical Notes
Information
The Aeronautical Journal , Volume 83 , Issue 825 , September 1979 , pp. 350 - 354
Copyright
Copyright © Royal Aeronautical Society 1979 

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References

1. Mabey, D. G. and Capps, D. S. Blast from moving guns. RAE Technical Memorandum Structures 890, 1976.Google Scholar
2. Mabey, D. G. and Capps, D. S. Blast from aircraft guns at subsonic and supersonic speeds. Paper B6, 3rd International Symposium on Ballistics, Karlsruhe, March 1977.Google Scholar
3. Mabey, D. G. and Capps, D. S. Blast from moving guns. AIAA Journal of Aircraft, Vol 14, No 7, pp 687–692, 1977.Google Scholar
4. Smith, F. A study of gun blast in relation to that from a moving explosion. RARDE Memorandum 28/70, 1970.Google Scholar
5. Smith, F. Loads on surfaces due to gun blast. RARDE Memorandum 29/70, 1970.Google Scholar
6. Smith, F. A theoretical model of the blast from stationary and moving guns. RARDE Memorandum 17/74, 1974. Also Proceedings of the First International Symposium on Ballistics at Orlando, Florida, 13th-15th November 1974.Google Scholar
7. Froböse, M., Parmentier, G., Mathieu, G. and Seydel, D. Measurements in the field of an infantry rifle HK33 (5.56 mm). RAE Library Translation 1900, 1976.Google Scholar
8. Wills, J. V. and Holdstock, A. C. Flight checking of predicted blast signatures from aircraft guns. RAE Technical Report in preparation.Google Scholar
9. Westine, P. S. The blast field about the muzzles of guns. Shock and Vibration Digest. Bulletin, Pt 6, p 139, March 1969.Google Scholar
10. Wortman, A. Unsteady flow phenomena causing weapons fire-aircraft engine inlet interference problems—theory and experiments. Unsteady aerodynamics: Proc of a Symposium held at University of Arizona, Vol 1, 18th-20th March 1975.Google Scholar
11. Wong, W. F. Private communication. 6th September 1977.Google Scholar
12. Richards, E. J. Noise and Acoustic Fatigue in Aero- nautics. John Wiley & Sons, 1968.Google Scholar
13. Klingenberg, G. Investigation of combustion phenomena associated with the flow of hot propellant gases III. Experimental survey of the formation and decay of muzzle flow fields and of pressure measurements. Combustion and Flame, 29, pp 289–309, 1977.Google Scholar