Wind-Tunnel Tests of 10-foot-diameter Autogiro Rotors (1937)
NASA Technical Reports Server (NTRS) · leaf 14
ii WIND-TUNNEL TESTS OF 1 0-1 ()() I -DIAMETER ATTTO(JIRO ROTORS \ I, .012 £.008 .o £.010 ^.006 ,*6° Pitch setting %.004 r q3 . UUU 5' .0 o %.006 u .002 ^4° 8 \.004 ^0 40 6tf 80 20 40 60 80 0 I Radius at which blade section starts, percent ^.002 Figure 23.—Influence of blade span on maximum… … 6 H .0 4 I I 0 ./ .2 .3 .4 .5 .6 .7 0 ./ .2 .3 .4 .5 .6 .7 .8 .9 Tip - speed ra tio, /u Tip - speed ra tio, fj. Figure 28.—Blade-motion coefficients ao, at, and 6i of 10-foot autogiro rotor. Figure 26.—Lift-drag ratio LjD of 10-foot autogiro rotor. A (N. A. C. A. 0018). A (N. A. C. A. 0018).
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