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213092 results in Engineering

Page 2070 of 10655

  • Some Operational Problems ofPublic Transport Helicopters*

  • R. H. Whitby
  • Journal:
    The Aeronautical Journal / Volume 55 / Issue 481 / January 1951
    Published online by Cambridge University Press:
    28 July 2016, pp. 27-42

  • Throughout the world helicopters are being operated in a variety of roles today and, whereas ten years ago, there was not one type which had got beyond the stage of being an inventor's plaything, several types are now suitable for regular military and civil operations. At present, so far as is known to the author, public transport services using helicopters are confined to charters and scheduled mail services, with the exception of a scheduled passenger service which has been run by the British European Airways Corporation as an operational experiment since June 1950. The factors, both technical and economic, which have so far prevented the large scale introduction of public transport helicopter services, are being progressively overcome and in due course operators will find that manufacturers have made available suitable aircraft. The operators' task will then be to fly these aircraft in a safe and regular manner and give the public the best service possible.

  • AER volume 51 issue 441 Cover and Front matter

  • Journal:
    The Aeronautical Journal / Volume 51 / Issue 441 / September 1947
    Published online by Cambridge University Press:
    28 July 2016, pp. f1-f20
    • Article
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  • Letter

  • Wright Brothers
  • Journal:
    The Aeronautical Journal / Volume 31 / Issue 196 / April 1927
    Published online by Cambridge University Press:
    28 July 2016, p. 274
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  • The Flight Envelope of a Helicopter

  • P. R. Payne
  • Journal:
    The Aeronautical Journal / Volume 58 / Issue 527 / November 1954
    Published online by Cambridge University Press:
    28 July 2016, pp. 785-787

  • The only simple method of estimating the tip speed limitations imposed on a rotor by retreating blade stall on the one hand, and compressibility losses on the other, is that given by Hafner. It suffers from the lack of accuracy always inherent in a “standard radius” method, and for present-day use a more refined approach is obviously desirable, provided that it still enables rapid estimates to be made.

Page 2070 of 10655