QUESTION 4 Consider a flat plate at zero angle of attack in an airflow at standard sea level conditions (Poo = 1.01 x 10

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Question 4 Consider A Flat Plate At Zero Angle Of Attack In An Airflow At Standard Sea Level Conditions Poo 1 01 X 10 1 (165.01 KiB) Viewed 36 times

QUESTION 4 Consider a flat plate at zero angle of attack in an airflow at standard sea level conditions (Poo = 1.01 x 105 Pa, To = 288 K and μ∞ = 1.7894 × 10-5 kg/m/s). The chord length of the plate is 2 m. The planform area of the plate is 40 m². Assuming the wall temperature is the adiabatic wall temperature and the flow is laminar, calculate the friction drag on the plate when the freestream velocity is (a) 100 m/s and (b) 1000 m/s. Figure 3 (below) may be of assistance. How realistic is the assumption of laminar flow? Justify your answer. TOTAL 10 MARKS 1.4 1.328 Tw/T₂ = 1.0 e 1.0 0.6 Adiabatic wall 0 4 8 12 16 20 M₂ Figure 3. Friction drag coefficient for laminar, compressible flow over a flat plate. C₁ √ Rec