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Effect of Variations in Weight or Normal Acceleration on the Ceiling of Jet-Propelled Aircraft

Published online by Cambridge University Press:  28 July 2016

P. L. Sutcliffe*
Affiliation:
A. V. Roe and Co. Ltd.

Extract

The ability to manoeuvre at high altitude has become one of the main requirements in the design of modern military aircraft. Ability to manoeuvre enables the fighter pilot to execute tight turns during the attack on a bomber and the bomber pilot to perform evasive manoeuvres and so make the task of the fighter more difficult.

Normally the main manoeuvre considered is the application of increased normal acceleration, or g, and if we assume that (a) there is sufficient pitching power available from the longitudinal control surface to increase the wing incidence to give the necessary increase in normal force, and (b) that the new wing incidence is below the stalling incidence of the wing, then the degree of manoeuvrability available is a function of thrust and drag alone. In the past the manoeuvrability required at a given altitude has been expressed in terms of the rate of climb available at that altitude and thus we have such definitions as “ the 1,000 ft./min. ceiling ” and so on.

Type
Technical Notes
Copyright
Copyright © Royal Aeronautical Society 1955

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