Not a direct answer to your question, but two of my sons, in an Australia-first, launched their hang gliders from the bottom of a hot air balloon at a town called Canowindra.

An aircraft takes off or lands into the wind, it gives them the ability to be traveling slower relative to the ground and still have lift. Suppose a small aircraft has a stall airspeed, or the speed below which it doesn't produce enough lift to stay aloft, of 50mph. If it comes in for a … Read more