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Dynamics of the Modern Automobile
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English
Abstract
MR. McCAIN enumerates in the simplest possible form some outstanding features of the new automobile-dynamics, and gives practical commercial reasons for his conclusions.
As referred to in the paper, streamlining is the reshaping of bodies to reduce air resistance at a commercial speed of about 45 m.p.h. An analysis of this subject is presented, and the effects of a redistribution of passengers and units are discussed. Riding-quality model-test results and weight distribution are commented upon. A bibliography of streamlining is included.
The overdrive is considered by Mr. McCain as part of the airflow car, and the curves show that-with the overdrive-a greater car speed can be reached under favorable wind-conditions, exceeding the curve values, without an excessive engine-speed. Forces acting upon planetary overdrive gears are treated in the Appendix.
Much remains to be done toward reduction of wind resistance, in Mr. McCain's opinion. He says that an ideally streamlined body would be too long to park and turn sharply in city traffic, and would involve an extra amount of weight that would constitute a drag against acceleration. Further, that a long tail involves more waste space per wheelbase, and, with the engine in front, does not adapt itself to readily usable baggage compartments.
Authors
Citation
McCain, G., "Dynamics of the Modern Automobile," SAE Technical Paper 340099, 1934, https://doi.org/10.4271/340099.Also In
References
- Airplane Design Warner E. P. McGraw-Hill Book Co. 1927 Parasite Drag 187 Streamline Bodies 200
- Journal of the Franklin Institute July 1923 103 Streamlining Automobiles
- Chrysler Corp. Library Highland Park, Mich. Racing Cars
- Automotive Industries May 13 1933 589 Streamlining Under Portions of Cars Bailey Neil P.
- Automotive Industries March 25 1933 368 Streamline Economics Put New Stress on Transmission Problems Heldt P. M.
- Chrysler Corp. Library Highland Park, Mich. Wind-Tunnel Tests-Aerodynamics Advantages of Streamlining-Aerodynamics
- S.A.E. J OURNAL November 1933 18 Side Winds Abate Performance Gains Hoped for from Streamlining Heald R. H.
- S.A.E. J OURNAL July 1930 5 Wind Resistance of Automobiles Pawlowski Felix W.
- Bureau of Standards Journal of Research August 1933 285 Aerodynamic Characteristics of Automobile Models Heald R. H.
- S.A.E. J OURNAL April 1933 144 May 1933 177 Is Fifty Miles Per Gallon Possible with Correct Streamlining Lay W. E. 144 Wind-Tunnel Tests 177 Outside Performance in Road Tests of a Car
- Chrysler Corp. Library Highland Park, Mich. Horizons
- S.A.E. J OURNAL January 1934 1 1934 Marks Turn from Conventional in Automobile Design Wolf Austin M.
- Automotive Industries Jan. 28 1933 106 Rear-Powered Ultra-Modern Bodies March 4 1933 272 New German Car Designs Heinze Edwin P. A.
- The Automobile Engineer London May 1933 193 An Aerodynamic Saloon
- S.A.E. J OURNAL September 1933 293 What the Traveling Public Wants in the Future Stout William B.
- S.A.E. J OURNAL July 1931 33 Projecting the Automobile into the Future Towle H. Ledyard
- Automotive Industries June 13 1931 908 Future Automobile Design Will Be Influenced by Aerodynamics Northrup Amos
- S.A.E. J OURNAL February 1933 22 November 1931 353 What Price Standardization, and, The Tear-Drop Car Fishleigh Walter T.
- A.T.Z-Automobiltechnische Zeitschrift Feb. 25 1934 82