A new expression is developed for the optimum outlet blade angle of a HAWT turbine blade element using impulse turbine theory. A simple numerical scheme is then given for calculating the blade angle using a modified expression for the relative velocity coefficient. Numerical results are presented which are in good agreement with optimum values.
GriffithsR.T., The Effect of Aerofoil Characteristics on Windmill Performance; Aeronautical Joumal, pp 322–326, July, 1977.
2.
Le GourieresD., Energie Eolienne; Eyrolles, Paris. 1982.
3.
N-MNtoko., Towards The Integration of Wind Turbines into the General Class of Axial-Flow Turbomachines; Wind Engineering. vol. 19, No.4, pp 209–212, 1995.
4.
NtokoN.-M., Total - to - Static Efficiency and HAWT Turbine Design; Wind Engineering, vol 22, No.2, pp 113–1161998.
