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Optimisation of constant altitude—constant airspeed flight for piston-prop aircraft

Published online by Cambridge University Press:  04 July 2016

S. K. Ojha
S. K. Ojha*
Affiliation:
Indian Institute of Technology, Powai, Bombay, India
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Extract

The preliminary design phase of an aircraft requires quick calculation methods to assess its performance. This note develops an analytical method to obtain the optimum range and associated flight parameters for a piston-prop aircraft. The aircraft is flying so that the altitude and airspeed are kept constant.

Such a flight is called “constant altitude-constant airspeed” flight or simply “constant h-V flight”. Transport aircraft generally utilise this type of flight profile. Such a profile has been analysed by Bert for turbojet aircraft, and Hale has discussed it for both turbojet and piston-prop aircraft. This note further improves the analysis of constant h-V flight by optimising it independently and without using the known values from any other flight profile.

Type
Technical Note
Information
The Aeronautical Journal , Volume 97 , Issue 964 , April 1993 , pp. 145 - 148
Copyright
Copyright © Royal Aeronautical Society 1993 

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References

1. Bert, C.W. Prediction of range and endurance of jet aircraft at constant altitude, J Aircr, October 1981, 18, pp 890–892.Google Scholar
2. Hale, F.J. Aircraft Performance, Selection and Design, 1st edition, John Wiley, New York, 1984, pp 116–127.Google Scholar