What are the formulas for designing Archimedes wind turbine blades dimensions, blade angles, distance between blades, and efficiency? what are the nomenclature of the Archimedes wind turbine angles and...

a) Radius = r, Blade Angle = θ, Distance between Blades = d, Efficiency = η
b) Radius = R, Blade Angle = α, Distance between Blades = l, Efficiency = ε
c) Radius = a, Blade Angle = β, Distance between Blades = s, Efficiency = rho
d) Radius = b, Blade Angle = γ, Distance between Blades = h, Efficiency = σ