Hostname: page-component-586b7cd67f-tf8b9 Total loading time: 0 Render date: 2024-11-25T21:29:33.253Z Has data issue: false hasContentIssue false
  • English
  • Français

Maximum lift-drag ratio of air cushion craft

Published online by Cambridge University Press:  17 April 2017

P.J. Mantle
P.J. Mantle*
Affiliation:
Vashon, Washington, USA
*
[email protected]
Get access Rights & Permissions [Opens in a new window]

Abstract

This paper develops a method to determine the lift-drag ratio of air cushion craft and specifically the maximum value of the lift-drag ratio, its associated design speed, and related performance and economic measures. The method works from well-established equations for drag and power for air cushion craft. Such values are required to determine the performance and economic efficiency of the craft in many modes of operation. The method covers both amphibious and non-amphibious craft of the types used in both military and commercial operation. A basis is developed for an optimisation procedure to design future craft for maximum efficiency.

Type
Research Article
Information
The Aeronautical Journal , Volume 121 , Issue 1239 , May 2017 , pp. 693 - 709
Copyright
Copyright © Royal Aeronautical Society 2017 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Footnotes

This is a companion paper to the paper, Induced Drag of Wings in Ground Effect, published by the same author in the December 2016, (Vol 120, No 1234) issue of The Aeronautical Journal.

References

REFERENCES

1. Lamb, H. Hydrodynamics, 6th ed (1st ed, 1879), 1932, Dover Publications, London, UK.Google Scholar
2. Havelock, T.H. The effect of shallow water on wave resistance, Proceedings Royal Society, Series A, 1922, 100 (A706), London, UK.Google Scholar
3. Crewe, P. and Eggington, W.J. The hovercraft—a new concept in maritime transport, RINA Lecture, 19 November 1959. See also Transactions of Royal Institute of Naval Architects, 1960.Google Scholar
4. Newman, J.N. and Poole, F.A.P. The wave resistance of a moving pressure distribution in a canal, DTMB Report 1619, March 1962, Carderock, Maryland, US.Google Scholar
5. Barratt, M.J. The wave drag of hovercraft, J Fluid Mechanics, 1965, 22, Part 1, pp 39–47.Google Scholar
6. Doctors, L.J. The Wave Resistance of an Air Cushion Vehicle, 1970, University of Michigan, Ann Arbor, Michigan, US.Google Scholar
7. Everest, J.T. and Hogben, N. Research on hovercraft over calm water, Transactions of Royal Institute of Naval Architects, 1967, 109, (3), pp 311–326.Google Scholar
8. Mantle, P.J. High-Speed Marine Craft: One Hundred Knots at Sea, 2015, Cambridge University Press, Cambridge, UK.Google Scholar
9.ibid, Chap 8.Google Scholar
10.ibid, Chap 8.Google Scholar
11. Mantle, P.J. Induced drag of wings in ground effect, Aeronautical J, December 2016, 120, (1234), pp 1867–1890; see also online at http://doi.org/10.1017/aer.2016.106.Google Scholar