500 departure from moving aircraft
That's good news ... at least someone thinks it could happen. Yes a rearward shove was the plan and now we know 80 knots is possible.
And of course the Antanov or silmilar would be towing a ton of turbulent air so the acceleration zero speed to 120 knots wouldn't be instananeous.
Methinks a rapid cyclic response might do it!
Can't we move on to something less idiotic .. . or any more views.
DRK