Figs.1,2,3,4 N.A.C.A. Technical Memorandum No. 827 … Figure 1.- Components of the air- flow through the rotor disk area. 0,05 r 0,03 0,03 002 0,02 0,01 0,01 0,001 0,002 a Go Figure 4.- Thrust coefficient Figure 3.- Polar of a rotor. of rotor at differ- ent wall distance.
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