Wind-Tunnel Tests of a 10-foot-diameter Gyroplane Rotor (1936)
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UNNEL TESTS OF A 10-FOOT-DIAMETER GYROPLANE ROTOR 90 12 ^80 to - 8 '60 s S :50 O 4 o 40 b o .J .5 .5 Tip-speed ratio, jj Figure 19.—Feathering angle b\ for zero rolling moment, 10-foot gyroplane rotor two blades. .8 .3 .4 .5 .6 Tip-speed ratio, jj Figure 18.—Rotor angle of attack a as a function of… … Angle of attack, ci, degrees .8 .3 .4 .5 .6 .; 6> Tip-speed ratio, jj Figure 23.—Lift coefficient CL and drag coefficient CD with rotor idling, zero Figure 22.—Pitching-momeut coefficient Cm of 10-foot gyroplane rotor, two blades. feathering, 10-foot gyroplane rotor, two blades.
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