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Helicopter

  • John Jewkes
  • David Sawers
  • Richard Stillerman

Abstract

It is not yet certain what is to be the ultimate commercial value of the helicopter, but it clearly has possibilities and, for military purposes, it has already firmly established itself. The practicable helicopter was the product of a long period of evolution, but it was only in the twentieth century, with the appearance of light internal-combustion engines, that useful machines became feasible.

Keywords

Islet Tissue Individual Inventor Patent Pool Cyclic Pitch Marine Engineering Company 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© John Jewkes, David Sawers and Richard Stillerman 1969

Authors and Affiliations

  • John Jewkes
  • David Sawers
  • Richard Stillerman

There are no affiliations available

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