W=8000;//given in N
S=14.5;//wing area,given in m^2
c=1.35;//mean chord,given in m
n=4.5;
v=60;//speed,given in m/s
rho=1.223;//air density,given in kg/m^3
alpha1=13.75;//from fig. 14.8(a),in degree
Cmcg1=0.075;//Cm,cg  from fig. 14.8(a)
alpha2=13.3;//given in degree
Cmcg2=0.073;//given