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Posted: **Tue Jul 05, 2022 8:54 am**

: Calculate The Power Output From A Horizontal Axis Wind Turbine With Two 12m Blades In A 35 Kph Wind Operating At 65 O 1 (13.05 KiB) Viewed 12 times

: Calculate The Power Output From A Horizontal Axis Wind Turbine With Two 12m Blades In A 35 Kph Wind Operating At 65 O 2 (13.43 KiB) Viewed 12 times

: Calculate The Power Output From A Horizontal Axis Wind Turbine With Two 12m Blades In A 35 Kph Wind Operating At 65 O 3 (15.08 KiB) Viewed 12 times

Calculate the power output from a horizontal axis wind turbine with two 12m blades, in a 35 kph wind, operating at 65% of the theoretical maximum efficiency. Assume the air density is 1.15 kg/m^3. Give your answer as a number, with units (e.g., W, kW, MW, etc) Answer:
Calculate the speed of the tip of a 67m blade on a horizontal axis wind turbine rotating at 20 revolutions per minute. Express your answer as a Mach number, i.e., the fraction of the speed of sound (340 m/s). Do not give units. Answer:
In designing a horizontal axis wind turbine, which of the following factors would lead to a preference for fewer numbers of blades? Select one or more: Lower turbulence produced by the blades. Lower cost. Lower variations in moment of inertia about the vertical axis. Higher efficiency.