Hostname: page-component-848d4c4894-jbqgn Total loading time: 0 Render date: 2024-07-02T23:22:36.583Z Has data issue: false hasContentIssue false

Helicopter Research: a review of outstanding problems together with an account of some recent work at A & A A E

Published online by Cambridge University Press:  26 October 2023

Get access

Summary

In the first part of the paper a brief review is made of major items for research in the helicopter field, the subjects touched on including rotor aerodynamics, stability and control, evaluation of configurations, vibrations and fatigue, and operational aspects An outline is given, in the section on stability and control, of work being done at A & A E E in connection with the assessment of the longitudinal handling characteristics of helicopters The second part of the paper contains an account of recent work at A & A E E on the low speed and take-off performance of a helicopter An empirical method of low speed performance estimation is described, and the variation with wind speed of the ground effect on a rotor is discussed theoretically and on the basis of experimental results A theoretical analysis of the forward take-off motion of a helicopter is briefly presented, and the final section is concerned with the performance of a multi-engine helicopter in the event of failure of one engine, with particular reference to the possibility of safe operation from the type of site proposed for civil use

Type
Joint Section Lecture with The Royal Aeronautical Society, 18th February, 1954
Copyright
Copyright © Royal Aeronautical Society 1954

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.)

References

Millar, R H Some factors affecting helicopter design and future operations Anglo-American Conference, 1953Google Scholar
Mangler, K W Calculation of the induced velocity field of a rotor Unpublished M of S paperGoogle Scholar
Daughaday, H, and Kline, J An approach to the determination of higher harmonic rotor blade stresses Proceedings of 9th Annual Forum of American Helicopter Society, 1953Google Scholar
Meyer, J R, and Falabella, G An investigation of the experimental aerodynamic loading on a model helicopter rotor blade N A C A Tech Note 2593, May, 1953Google Scholar
Gustafson, F B Desirable longitudinal flying qualities for helicopters and means to achieve them Aeronautical Engineering Review June, 1951Google Scholar
Gates, S B, and Lyon, H M A contmuauon of longitudinal stability and control analysis R & M 2027 February, 1944Google Scholar
Hohenemser, K A type of lifting rotor with inherent stability Journal of Aero Sc September, 195010.2514/8.1724CrossRefGoogle Scholar
Oliver, A L The low speed performance of a helicopter A R C Current Paper 122 May, 1952Google Scholar
Zbrozek, J K The ground effect on a lifting rotor R & M 2347 July, 1947Google Scholar
Buz, A The ground effect on lifting propellers N A C A Tech Memo No 836 1937Google Scholar
O'Hara, F The forward take-off of a helicopter A & A E E Res/276 June, 1953Google Scholar
Oliver, A L The performance of a multi-engine helicopter followmg failure of one engine during take-off or landing A & A E E Res/277 October, 1953Google Scholar
Whitby, R H Some operational problems of public transport helicopters Journal R Aero Soc January, 195110.1017/S0001924000097402CrossRefGoogle Scholar