NASA Technical Paper 2256 - CAFE Foundation

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MINIGLOVE
NLF GLOVE
I I
I.
TRANSITION
{measuredby sublimating chemicals)
136
ORIGINAl,.P_';k_ _
OF POOR Ou_LnY
HOT-FILM SIGNALS
BLADE-[.......... ]
PASSING J
FREQUENCY
LAMINAR- X
TURBULENT -%
I ,,I I,,, I I I .I . I .I
0 .1 .2 .3 .4 .5 .6 .7 .8
TIME, sec
Fiqure 40.- In-flight, hot-film measured, time-dependent effeots of propeller
slipstream on laminar boundary layer (T-34C airplane). R = 1.5 X 10 6 ft-1;
n = 150 rpm.
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