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Evolution of airplanes, and what price speed?

Publication ,  Journal Article
Bejan, A; Charles, JD; Lorente, S; Dowell, EH
Published in: AIAA Journal
January 1, 2016

The constructal theory of flight accounts not only for speed, body size, and medium density r but also for physical parameters that are an integral part of the derivation of these equations in their original sources. One parameter is the Reynolds number, which is assumed to be greater than 102-103, such that the drag coefficient is of order one and relatively insensitive to the Reynolds number. Another assumption is that all speeds are subsonic, which is why the Mach number does not appear in these equations. For aircraft, the speed predicted by constructal theory in 2000 is the cruising speed. Airplanes do not evolve by themselves: they evolve as a couple, with the humans who design them and use them.

Duke Scholars

Published In

AIAA Journal

DOI

ISSN

0001-1452

Publication Date

January 1, 2016

Volume

54

Issue

3

Start / End Page

1116 / 1119

Related Subject Headings

  • Aerospace & Aeronautics
  • 4012 Fluid mechanics and thermal engineering
  • 4001 Aerospace engineering
  • 0913 Mechanical Engineering
  • 0905 Civil Engineering
  • 0901 Aerospace Engineering
 

Citation

APA
Chicago
ICMJE
MLA
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Bejan, A., Charles, J. D., Lorente, S., & Dowell, E. H. (2016). Evolution of airplanes, and what price speed? AIAA Journal, 54(3), 1116–1119. https://doi.org/10.2514/1.J054481
Bejan, A., J. D. Charles, S. Lorente, and E. H. Dowell. “Evolution of airplanes, and what price speed?AIAA Journal 54, no. 3 (January 1, 2016): 1116–19. https://doi.org/10.2514/1.J054481.
Bejan A, Charles JD, Lorente S, Dowell EH. Evolution of airplanes, and what price speed? AIAA Journal. 2016 Jan 1;54(3):1116–9.
Bejan, A., et al. “Evolution of airplanes, and what price speed?AIAA Journal, vol. 54, no. 3, Jan. 2016, pp. 1116–19. Scopus, doi:10.2514/1.J054481.
Bejan A, Charles JD, Lorente S, Dowell EH. Evolution of airplanes, and what price speed? AIAA Journal. 2016 Jan 1;54(3):1116–1119.
Journal cover image

Published In

AIAA Journal

DOI

ISSN

0001-1452

Publication Date

January 1, 2016

Volume

54

Issue

3

Start / End Page

1116 / 1119

Related Subject Headings

  • Aerospace & Aeronautics
  • 4012 Fluid mechanics and thermal engineering
  • 4001 Aerospace engineering
  • 0913 Mechanical Engineering
  • 0905 Civil Engineering
  • 0901 Aerospace Engineering