- the primary objective must be an improved Lift/Power ratio.
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The following two excerpts from the 31 year old report, 'A review of Advanced Rotorcraft Research', might be of interest to some.
"At stage lengths of about 200 n. mi., where the maximum number of revenue flights occur, rotary wing cruise speeds of about 240 knots are required to produce the same block speeds as existing jet transports."
Dave
Promoting (or is it 'provoking'?) an expansion of the rotorcraft envelope.