Originally Posted by
Meikleour
Wizofoz: I agree with you however I think you will find that I never claimed lift was proportional to groundspeed! For the windshear analogy to apply the momentum must be related to the groundspeed ie. relative to the earth. Why is it therefore that when operating in the "bubble of air" concept then reference to the earth is discounted? Likewise can you help me understand the often observed phenomenon that I cited.
While free flying, the relationship with the ground is purely a navigational one and has nothing to do with the aerodynamics of the plane. Can you really not grasp this?