b=7.7;//wingspan of the Northrop F-5(m)
e=0.8;//span efficiency factor
S=15.79;//wing area in m^2
AR=b^2/S//aspect ratio
Cl=0.6622;//lift coefficient(data taken from example 5.14)
q=7651.224;//dynamic pressure in N/m^2(data taken from example 5.14)