Wind turbine rotor design calculation with velocityu triangle
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Answer:
Answer:To calculate relative wind, add the sum of the tip speed vector and the free stream wind vector. Tip speed is the speed of the outer edge of the airfoil and free stream wind is undisturbed natural air flow. To calculate “angle of attack” of an airfoil, you need: Tip SpeedTwisting the blade changes the winds angle along the blade with the combined effect of twisting and tapering the blade along its length improves the angle of attack increasing speed, efficiency while reducing drag. Also, tapered blades are stronger and lighter than straight blades as the bending stress are reduced.
To calculate relative wind, add the sum of the tip speed vector and the free stream wind vector. Tip speed is the speed of the outer edge of the airfoil and free stream wind is undisturbed natural air flow. To calculate “angle of attack” of an airfoil, you need: Tip SpeedTwisting the blade changes the winds angle along the blade with the combined effect of twisting and tapering the blade along its length improves the angle of attack increasing speed, efficiency while reducing drag. Also, tapered blades are stronger and lighter than straight blades as the bending stress are reduced.