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The problem of certifying helicopters for flight in icing conditions

Published online by Cambridge University Press:  04 July 2016

H. B. Lake  and
J. Bradley
H. B. Lake
Affiliation:
Ministry of Defence
J. Bradley
Affiliation:
Aeroplane and Armament Experimental Establishment, Boscombe Down
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Extract

The idea of this pair of lectures is to give some idea of the problems which face an official organisation when it is given the task and the responsibility of making recommendations to allow a helicopter to operate in icing conditions. The principles of the problems are not new— they will be recognised by all quality assurance people, from those who have to vet the design of the Severn Bridge to those who have to certify the safety of a new dog food. We are engaged on another chapter of the everlasting question: how do we define the environment; how do we find the test condition; and, how do we interpolate or extrapolate from what we have tested to what will be found by the operator?

Type
Research Article
Information
The Aeronautical Journal , Volume 80 , Issue 790 , October 1976 , pp. 419 - 433
Copyright
Copyright © Royal Aeronautical Society 1976 

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References

1. Ginn, M. C. The operation of the Bell 212 under instrument flight rules, The Aeronautical Journal, Vol 78, p 196, May 1974,Google Scholar
2. Stallabrass, J. R. Canadian research in the field of helicoptericing. Journal of the Helicopter Association of Great Britain. Vol 12, p 173.Google Scholar
3. Bailey, D. L. Description of the spray rig used to studyicing on helicopters in flight. NRC Aeronautical Report LR 186 A.Google Scholar
4. British Civil Airworthiness Requirements, Section D, Chapter D4-7, Table 1.Google Scholar