Study of best assumptions for hovering and horizontal flight; effect of twistend and tapered blade on rotor efficiency analyzed; gliding coefficient at different stages (from autogiro to helicopter) of horizontal flight compared. English translation of paper indexed in Engineering Index 1940 p 569, from Luftfahrtforschung July 20 1940.
Contribution to aerodynamics of rotating wing aircraft
Nat Advisory Committee Aeronautics -- Tech Memo
1941
13 pages
7 Supp sheets
Report
Englisch
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