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The Developments and Reliability of the Modern Multi-Engine Air Liner*

Published online by Cambridge University Press:  28 July 2016

Donald W. Douglas
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Extract

Four essential features are generally required of any form of transportation : Speed, safety, comfort and economy. The airplane must compete with other forms of transportation and with other airplanes. The greater speed of aircraft travel justifies a certain increase in cost. The newer transport airplanes are comparable with, if not superior to, other means of transportation. Safety is of special importance, and improvement in this direction demands the airplane designer's best efforts.

Type
Proceedings
Information
The Aeronautical Journal , Volume 39 , Issue 299 , November 1935 , pp. 1010 - 1046
Copyright
Copyright © Royal Aeronautical Society 1935

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Footnotes

*

The author wishes particularly to acknowledge the co-operation of Mr. W. Bailey Oswald in the preparation of the paper, and the generous co-operation of the various companies, testing agencies, and individuals.

References

1. Oswald, W. Bailey: General Formulas and Charts for the Calculation of Airplane Performance. N.A.C.A. Technical Report No. 408, 1932.Google Scholar
2. Oswald, W. Bailey : Methods of Performance Calculation for Airplanes with Supercharged Engines. Prepared by R. B. Ashley. Air Corps Information Circular No. 679, 1933.Google Scholar
3. Hartman, Edwin P. : Negative Thrust and Torque Characteristics of an Adjustable-Pitch Metal Propeller. N.A.C.A. Technical Report No. 464, 1933 Google Scholar