1960-01-01

ways of improving TAKE-OFF AND LANDING 600026

SOME POSSIBILITIES for shortening the field length requirements of present-day jet aircraft are:
  • Install leading-edge, high-lift devices which are retrofitable to present-day aircraft.
  • Retrofit — or purchase new — aircraft powered by turbofan engines. These have an inherently higher take-off thrust to cruise thrust ratio than the jets, which vastly improves the take-off acceleration.
  • Use boundary-layer control actuated by turbine discharge gas for immediate consideration in new aircraft engines.
  • Use direct-lift jet engines. These will improve the block speed characteristics of the aircraft and also give vertical take-off and landing capabilities.
This paper discusses the advantages of each of these possibilities. The author also describes the problem of airport location within a city, and its effect of total travel time.*

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