Planning the Evolution of V/STOL Powerplants 700809

It seems likely that a STOL system with 100- to 150- passenger aircraft will be established in the second half of the 1970's, and that, from it, a VTOL system will evolve in the 1980's. Prior demonstration of the feasibility of all aspects of these systems is vital if the final commitment is to be made without high risk. Achievement of the necessary levels of confidence in the engines for these aircraft will result only from a carefully planned program. The paper reviews the various alternative powerplant proposals for the first large STOL aircraft and describes the current and future programs of work which form this planned evolutionary process.


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