Noise from propellers with symmetrical sections at zero blade angle, II (1938)
NASA Technical Reports Server (NTRS) · leaf 17
Figs. 2,6,8 N.A.C.A. Technical Note No.679 16 … 10 IE 6 0 8 Figure 2.- Source velocity, i qn Figure 6.-Exponents of VG/c against qn. 90 -8 :80 70 Lo§io Vc Figure 8.-Intensity in decibels of the fundamental for a four-blade arrangement against log10 v0/c
NASA Technical Reports Server (NTRS)
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