> If the balloon malfunctions, they can feel weightlessness until they reach terminal velocity Until they start decelerating, which is immediately. They’ll als

> If the balloon malfunctions, they can feel weightlessness until they reach terminal velocity Until they start decelerating, which is immediately. They’ll also feel it fairly rapidly, I think. https://en.wikipedia.org/wiki/Reduced-gravity_aircraft#Operating_principles https://en.wikipedia.org/wiki/Reduced-gravity_aircraft#Opera... (emphasis added): “The sensation of weightlessness is achieved by reducing thrust and lowering the nose to maintain a neutral, or "zero lift", configuration such that the aircraft follows a ballistic trajectory, with engine thrust exactly compensating for drag”