//Speed of plane(in km/hr):
V=150;
//Speed at point B relative to the wing(in m/sec):
Vb=60;
//Density of air(in kg/m^3):
da=1.23;
//Atmospheris pressure(in N/m^2):
pa=1.01*10^5;
//At 1000m, 
//p/pSL:
P1=0.8870;
//d/dSL:
D1=0.9075;