Discussion
A balance reads a lift of \( 1200 \) N and a drag of \( 90 \) N. The model's lift-to-drag ratio is nearest to
Answer: C
Dividing, \( 1200/90 = 13.3 \). Because drag is the far smaller number, any systematic error in the drag channel matters much more proportionally than the same error in lift would, which is exactly why flow angularity is calibrated so carefully.
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