Tests of 10 propellers of several thickness ratios at various tip speeds up to 1350 ft. per sec.; no loss of efficiency up to tip speeds of 1000 ft. per sec.; above this tip speed loss is at rate of 10 per cent per 100 ft. per sec. increase relative to efficiency at lower speeds for propellers of pitch diam. ratios 0.3 to 0.4.
Full-scale tests of metal propellers at high tip speeds
Nat. Advisory Committee Aeronautics -- Report
1931
22 pages
33 Figs.
Report
English
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