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Exercise 8 Consider an airfoil in a flow of air, where far ahead (upstream) of the airfoil, the pressure, velocity and density are: \( 1.01 \cdot 10^{5} \mathrm{~N} / \mathrm{m}^{2}, 150 \mathrm{~km} / \mathrm{h} \) and \( 1.225 \mathrm{~kg} / \mathrm{m}^{3} \) respectively. At a point \( A \) on the airfoil the pressure is \( 9.95 \cdot 10^{4} \mathrm{~N} / \mathrm{m}^{2} \). Calculate the velocity in \( A \) (in \( \mathrm{m} / \mathrm{s} \) ).

          Exercise 8
Consider an airfoil in a flow of air, where far ahead (upstream) of the airfoil, the pressure, velocity and density are: \( 1.01 \cdot 10^{5} \mathrm{~N} / \mathrm{m}^{2}, 150 \mathrm{~km} / \mathrm{h} \) and \( 1.225 \mathrm{~kg} / \mathrm{m}^{3} \) respectively.
At a point \( A \) on the airfoil the pressure is \( 9.95 \cdot 10^{4} \mathrm{~N} / \mathrm{m}^{2} \). Calculate the velocity in \( A \) (in \( \mathrm{m} / \mathrm{s} \) ).

Exercise 8
Consider an airfoil in a flow of air, where far ahead (upstream) of the airfoil, the pressure, velocity and density are: 1.01 · 10^5 N / m^2, 150 km / h and 1.225 kg / m^3 respectively.
At a point A on the airfoil the pressure is 9.95 · 10^4 N / m^2. Calculate the velocity in A (in m / s ).

Added by Margaret P.

Understanding Physics

Karen Cummings, Priscilla W. Laws,… 1st Edition

Chapter 15

Instant Answer

Solved by Expert Sufiyan Alam

Step 1

Given: Upstream velocity \( V_1 = 150 \, \text{km/h} \). To convert to m/s, use the conversion factor \( 1 \, \text{km/h} = \frac{1}{3.6} \, \text{m/s} \). \[ V_1 = 150 \times \frac{1}{3.6} = 41.67 \, \text{m/s} \] Show more…

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Exercise 8 Consider an airfoil in a flow of air, where far ahead (upstream) of the airfoil, the pressure, velocity and density are: \( 1.01 \cdot 10^{5} \mathrm{~N} / \mathrm{m}^{2}, 150 \mathrm{~km} / \mathrm{h} \) and \( 1.225 \mathrm{~kg} / \mathrm{m}^{3} \) respectively. At a point \( A \) on the airfoil the pressure is \( 9.95 \cdot 10^{4} \mathrm{~N} / \mathrm{m}^{2} \). Calculate the velocity in \( A \) (in \( \mathrm{m} / \mathrm{s} \) ).