BEA Helicopters Ltd made commercial history by recording first-ever profit for scheduled helicopter service; route was that between Penzance and Scilly Isles and on which airline has one S-61N permanently employed; tabulation of estimated flight costs of S-61N and direct operating cost 1965- 1966; comparison of component drag values of S-61N and "high-speed transport". Updated summary of paper, presented to Bristol and Chester Branches of Roy Aeronautical Soc, Dec 1965.
Advent of economic helicopter
Flight
Flight International ; 92 , n 3045
1967
5 pages
Aufsatz (Zeitschrift)
Englisch
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