initial commit / add all books

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+clear;

+clc;

+funcprot(0);

+

+//given data

+//data from Exampla 10.5

+Z = 3;//number of blades

+D = 30;//rotor diameter in m

+J = 5.0;//tip-speed ratio

+l = 1.0;//blade chord in m

+beta = 2;//pitch angle in deg

+omega = 2.5;//in rad/s

+

+rho = 1.2;//density in kg/m^3

+cx1 = 7.5;//in m/s

+sum_var1 = 6.9682;//from Table 10.3

+sum_var2 = 47.509*10^-3;//from Table 10.4

+

+//Calculations

+X = sum_var1*0.5*rho*Z*l*0.5*D*cx1^2;

+tau = sum_var2*0.5*rho*Z*l*(omega^2)*(0.5*D)^4;

+P = tau*omega;

+A2 = 0.25*%pi*D^2;

+P0 = 0.5*rho*A2*cx1^3;

+Cp = P/P0;

+zeta = (27/16)*Cp;

+

+//Results

+printf('The total axial force = %d N.',X);

+printf('\n The torque = %.3f *10^3 Nm.',tau/1000);

+printf('\n The power developed = %.3f kW.',P/1000);

+printf('\n The power coefficient = %.3f',Cp);

+printf('\n The relative power coefficient = %.3f',zeta);