Calculate the desirable free-stream speed

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Reference no: EM131270932

The free-stream velocity in the test section during an early morning windtunnel test was 100 km/h and the temperature was 280 K (use ρ = 1.2 kg/m^3, μ = 1.8 × 10^-5 N s/m²). The same test is repeated in the afternoon but now the temperature was 310 K (to calculate ρ, use the ideal-gas relation, μ = 2.0 × 10^-5 N s/m²).

(a) Calculate the desirable free-stream speed to maintain the Reynolds number of the morning test.

(b) At what speed will the forces (e.g., lift and drag) be the same as in the morning?

Reference no: EM131270932

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