Card 22 / 41: We wish to perform wind tunnel tests on a 1/10 size model of an automobile. The model is geometrically similar to the full size automobile. If we wish our experiments to be dynamically similar to the full scale performance of the automobile we must have equivalent Re in addition to several other factors. If we wish to use air, then what should be the wind speed in the tunnel to mimic a full-scale automobile at 60 mph?
A)
6 mph
B)
36 mph
C)
60 mph
D)
600 mph
Answer:
D) 600 mph
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