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+// scilab Code Exa 8.1 Calculation on a compressor cascade
+
+V1=75; // Absolute Velocity of air at entry in m/s
+alpha1=48; // air angle at entry
+alpha2=25; // air angle at exit
+p=1.1; // pitch-chord ratio
+delps=11; // stagnation pressure loss in mm W.G.
+ro=1.25; // density of air in kg/m3
+g=9.81;
+a=0.5*(tand(alpha1)+tand(alpha2)); 
+alpham=atand(a);
+b=0.5*ro*(V1^2);
+Y=delps*g/b;
+disp (Y,"the loss coefficient is")
+c=(cosd(alpham)^3)/(cosd(alpha1)^2);
+C_D=p*Y*c;
+disp (C_D,"the drag coefficient is")
+d=2*p*(tand(alpha1)-tand(alpha2))*cosd(alpham);
+e=C_D*tand(alpham);
+C_L=d-e;
+disp (C_L,"the Lift coefficient is")
+f=(cosd(alpha1)^2)/(cosd(alpha2)^2);
+C_ps=1-f;
+disp (C_ps,"the Ideal pressure recovery coefficient is")
+C_pa=C_ps-Y;
+disp (C_pa,"the Actual pressure recovery coefficient is")
+n_D=C_pa/C_ps;
+disp (n_D,"the Diffuser efficiency is")
+n_dmax=1-(2*C_D/C_L);
+disp (n_dmax,"the Maximum Diffuser efficiency is")