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MMLU-Pro / 11303 / A model of a proposed low-speed crop-dusting plane is to be tested in a wind…

Problem

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question

A model of a proposed low-speed crop-dusting plane is to be tested in a wind tunnel capable of maintaining velocities of 264 ft/s, using atmospheric air. The prototype plane has a design wing span of 27 ft and a proposed speed of 88 ft/s. In order to preserve dynamic similarity, what should be the wing span of the model if the wind tunnel is to operate at full speed? Assume the air at these low velocities to be essentially incompressible. In addition, assume that the temperature of atmospheric air and the temperature of the wind-tunnel air are the same.

category

engineering

options

  1. 9 ft
  2. 30 ft
  3. 3 ft
  4. 6 ft
  5. 15 ft
  6. 21 ft
  7. 12 ft
  8. 18 ft
  9. 24 ft
  10. 27 ft

src

stemez-FluidMechanics

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