Quote:
Originally posted by XPLORx4:
Quote:
Originally posted by NY Madman:
[b]There is no forward motion of this plane in the hypothetical.
Yes, there is. The plane is not bolted to the ground. Therefore, it moves forward because a plane's engines push against AIR, not the GROUND. Planes achieve lift via airspeed, not groundspeed.

Unless that conveyor somehow manages to prevent the engines from moving air through them, the plane is gonna take off.[/b]
The plane is pulling air through it's engines - Yes, which is making the wheels touching the ground rotate, which is being counteracted by the moving runway which is moving at exactly the same speed in the opposite direction. So for someone stood on the grass next to the moving runway parallel to the plane - the plane isn't moving backwards or forwards, it's just throttled up and rolling on the moving runway. Hense no airflow over the wings, hense no lift, hense no flight.

In affect the plane may as well be bolted to the ground either side of the runway (Not to the moving runway itself).