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A student team is to design a human-powered submarine for a design competition. The overall length of the prototype submarine is 2.24 m, and its student designers hope that it can travel fully submerged through water at 0.520 m/s. The water is freshwater (a lake) at T = 15°C. The design team builds a one-eighth scale model to test in their university’s wind tunnel (Fig. P7-39). A shield surrounds the drag balance

A student team is to design a human-powered submarine for a design competition. The overall length...

strut so that the aerodynamic drag of the strut itself does | not influence the measured drag. The air in the wind tunnel is at 25°C and at one standard atmosphere pressure. At what air; speed do they need to run the wind tunnel in order to achieve similarity?

 
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