Three speeds involved in its operation: speed of air at infinity downstream, speed of air at infinity upstream, and speed of rotation, are of same order of magnitude; by suitable choice of propeller dimensions to obtain supersonic relative flow along blade, losses due to compression, are eliminated; direct mounting of propeller on turbine shaft gives supersonic turbopropeller group simplicity that characterizes supercharger. English translation from Actes du Colloque International de Mecanique, Poitiers 1950.
Study of supersonic propeller
NACA -- Tech Memo
1953
23 pages
Report
English
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Study of the supersonic propeller
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