Originally Posted by
jimjim1
Hmmm.
The very definition of hover is that the lift vector is vertical.
Any non vertical component to the thrust (net thrust from all sources - if you like) will produce an acceleration in some horizontal direction until the drag equals the horizontal component of the thrust.
I guess I am missing something.
In the hover as the aircraft descends there is a "pocket" of high pressure air "retained" fore and aft by the airbrake & dam and left and right by gun pods or strakes. It may be that there if some residual that can be retained likewise by flaps?