Answer Happy

You are required to advise on using a wind tunnel for testing a scale model of a car for aerodynamic performance. i. You have been given that the maximum velocity of the car is 140 km/h and the wind tunnel can handle air velocities up to 300 km/h. The car design team has a 1/4 scale model of the car for testing. Determine whether the 1/4 model can be used for wind tunnel testing. ji. The wind tunnel has a test section that is twice as wide as the car model. Comment on the appropriateness of this wind tunnel for testing. Using an appropriate sketch explain where the centre of gravity of a vehicle should iii.
lie in comparison to the centre of pressure (consider side winds).