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Power Plant Trends

Published online by Cambridge University Press:  28 July 2016

George J. Mead
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Extract

Transport aviation is expanding rapidly in America both because of improved business conditions and the excellent record of the transport companies. The new aeroplanes being laid down, both land transports and boats are, on the average, twice the size of their immediate predecessors measured in terms of gross weight. Never before in the history of our industry has there been such a large increase in size in such a short period (Fig. 1). Coupled with the demand for larger aeroplanes is the requirement for decidedly higher cruising speeds. To meet these demands the total thrust horse-power per aeroplane has been materially increased. Operating costs are becoming more and more important due to the competition among air lines, as well as between them and other forms of transportation. The engineer is consequently forced to give serious consideration to utilising the power available in the most efficient manner, as well as to reducing maintenance costs.

Type
Proceedings
Information
The Aeronautical Journal , Volume 41 , Issue 323 , November 1937 , pp. 997 - 1041
Copyright
Copyright © Royal Aeronautical Society 1937

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References

Note on page 998 * Since this paper was delivered, a new engine has been announced by Pratt & Whitney with an ouput of 40 h.p. per litre and a take-off m.e.p. of 204 lbs.

Note on page 999 1 A. H. R. Fedden. “ Possible Future Developments of Air-Cooled Aero Engines.” The Journal of the Royal Aeronautical Society, March, 1934.

Note on page 1000 2 D. P. Barnard. “ The Value of Octane Numbers in Flight.” Lecture before the Society of Automotive Engineers, March 12, 1937.

P. B. Taylor. “ Increasing the Thrust Horse-power from Radial Air-Cooled Engines.” S.A.E. Journal, April, 1931.

C. B. Veal. “ Rating Aviation Fuels in Full-Scale Aircraft Engines.” S.A.E. Journal May, 1936.

Note on page 1001 3 F. R.Banks. “ Ethyl.” The Journal of the Royal Aeronautical Society, April, 1934. ” Fuels and Modern Aero Motor Design.” Lecture before the Royal Aeronautical Society, January 8, 1937.

F. L.Bass. “ High Octane Fuels.” Aircraft Engineering, January, 1937.

E. L.Bass. and S. A. W.Thomson. “Influence of Fuel Properties on Air Line Operating Costs.” Shell Aviation News, December, 1936.

F. D.Klein. “ Aircraft Engine Performance with 100-Octane Fuel.” Journal of the Aeronautical Sciences, March, 1935. “ Future Possibilities of 100-Octane Aircraft-Engine Fuel.” S.A.E. Journal, August, 1936.

D. P.Barnard hoc. cit. supra.

Note on page 1010 4 Guy E. Beardsley, Jr. “ An Automatic Power and Mixture Control for Aircraft Engines.” S.A.E. Journal, August, 1935.

Note on page 1039 * “Vibration Characteristics of Aircraft Engine Crankshafts,” A.S.M.E. Publication Aer-52-19, 1930.

†“The MIT-Sperry Apparatus for Measuring Vibration,” Journal of the Aero. Sdc for May, 1937.