Practice Testing Of Automobiles In Wind Tunnel (16.2.2)

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9 questions

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6 sample questions

Question 1.
Define aerodynamic drag.
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It's what slows vehicles down when they move.
Question 2.
What is viscosity?
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Think of how honey moves compared to water.
3Question 3.
What does the Reynolds number indicate?
- Ratio of inertial to viscous forces
- Total drag on the vehicle
- Air density
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Think about how it helps determine flow patterns.
4Question 4.
True or False: Higher drag coefficients result in lower drag forces.
- True
- False
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Remember how the shape affects drag.
Question 5.
How would you design a test to effectively measure the aerodynamic efficiency of a new sports car model in a wind tunnel?
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Think about the parameters over which you have control.
Question 6.
Given a drag coefficient increase from 0.3 to 0.4 while testing an automobile model at 50 km/h, calculate the expected increase in drag force if the frontal area remains constant.
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Use the drag equation to assess the difference with the new coefficient.

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