Yes playpower... it is due to d presence of 2 wings...
area of a surface of a wing is assumed to be A...
hence total force acting downwards = p1(2A) = 2.p1.A...
Yes playpower... it is due to d presence of 2 wings...
area of a surface of a wing is assumed to be A...
hence total force acting downwards = p1(2A) = 2.p1.A...