Q1/The flow about a 150 mm artillery projectile which travels at 600 m/s through still air at 30°C and absolute pressure 101.4 kPa is to be modeled in a high-speed wind tunnel with a 1:6 model. If the wind tunnel air has a temperature of -18°C and absolute pressure of 68.9 kPa, what velocity is required? If the drag force on the model is 35 N, what is the drag force on the prototype if skin friction may be neglected?

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Wind Energy

Wind energy is a renewable energy source that is used to generate electricity by wind power. The term, wind power, means utilization of kinetic energy of wind to generate electricity. Wind energy is termed renewable source energy because it can never be exhausted. There are other renewable energy sources, such as solar energy, geothermal energy, hydropower energy, and so on. All of them contribute to power the thermal energy stations to generate electricity.