Yeah - the jets push air...and the tires are merely supporting the weight, not providing propulsion....so the tread mill would make the tires spin at double the ground speed....due to the conveyor MATCHING the plane's speed...IE: IF the plane isn't moving, the conveyor isn't moving.

Assuming that the conveyor matches the gound speed, the tires would not go backwards...as by "opposite direction", it seems to mean that its merely moving akin to a tread mill, towards the front of the plane, as the plane is trying to move forward....so the plane would never be moved backwards from a rest (No thrust) either.

The tires would just be rolling at double their normal take off speed, as the conveyor is MATCHING the speed of the PLANE...so as far as the tires are concerned, the tarmac is rolling along under them at double the plane's speed....whatever THAT is.

If "Opposite" means that it would push the plane FOWARD if it wasn't MATCHING the plane's speed...(Like a tread mill where the tread is coming from behind you, instead of the normal travel TOWARDS you, then it would not spin the tires backwards or fowards from a normal take off....but that makes no sense in this context...as its the plane's speed that is being matched, not the tire speed...IE: The tires would not roll at all.

Steering/braking would of course be crazy, but, assuming the question is really to differentiate between able to move forward or not, I'd go with yes, it could take off from a propulsion standpoint...as the jets don't need tires to roll, skids or pontoons work for planes too.



IE: It would be able to take off as far as propulsion goes....the tire speed is irrelevant...but just double the airspeed.