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Augmenting Aerodynamic Lift with Jet Lift

Published online by Cambridge University Press:  04 July 2016

Paul D. Arthur  and
Edward T. Pitkin
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Extract

Downward deflection of a propulsive jet may be employed to augment aerodynamic lift in an advantageous manner. In each situation there occurs a simple optimisation when the losses due to reduced propulsive efficiency are contrasted with the gains which accrue from jet lifting. Typical cases will be considered here for wing dominant configurations, i.e. cases where the lifting surfaces contribute most of the drag, with the body contributing but a minor effect. Variable geometry of both airframe and engine is implicitly assumed so that results may be applied to preliminary design studies which will determine the relative propulsion system size and wing area.

Type
Technical Notes
Information
The Aeronautical Journal , Volume 65 , Issue 612 , December 1961 , pp. 830 - 832
Copyright
Copyright © Royal Aeronautical Society 1961

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References

1.Luidens, R. W. (1959). Arrangements of Jet Engine and Airframe for Increased Range, NACA RM E56L04, 26 July 1957 (Declassified February 1959).Google Scholar
2.Arthur, P. D. and McJones, R. W. (1957). Effective Lift/ Drag Ratio with Jet Lift, Jet Propulsion Vol. 27, No. 6, p. 676, June 1957.Google Scholar
3.Mager, A. and Baker, J. (1958). Optimum Effective Lift/ Drag Ratio with Jet Lift, MR 20,003, ASTRO, A Division of The Marquardt Corporation, October 1958.Google Scholar
4.Luskin, H. and Klein, H. (1955). The Influence of Turbo jet Airflow on the Aerodynamic Design of Airplanes, SM-19111, Douglas Aircraft Co., Santa Monica Division, June 1955.Google Scholar