Capn Bloggs;
Does this graph answer your questions?
Regards,
HN39
I am struggling to get my head around this a little bit. I came up with the following thought experiment. Imagine an aircraft that has a Vx of 60kts. The aircraft is flying in a 50kt headwind. So the aircraft has a ground speed of 10kts, and one could imagine that it is climbing farily steeply (relative to the ground). If the pilot were to now slow down to an airspeed of 50 kts, thus reducing the groundspeed to 0, provided the aircraft can climb at 50 knots - it will now have a climb angle of 90 degrees.
Does this make sense?
Golf-Sierra