Quote:
Originally posted by RedX:
They would not negate each other. The force generated by the plane is via the air (air forced through the turbines)....the force generated by the conveyor belt is transferred to the wheels, which in the instance of take-off force play no part.

The air being forced through the turbines will be pushed through those turbines regardless of the conveyor belt's speed. And therefore, the plane will respond, as it does in take-off scenarios, to that force through the turbines. And it will react by moving forward through the airspace it is in, and the airspace that is being affected by the turbines' forcing of said air. The wheels' operations and reactions to the conveyor beneath them are unimportant in this hypothetical scenario.

The only way the conveyor could affect the plane's ability to lift off under take-off thrust was if the conveyor could also negatively (with relation to the plane's intended forward motion) affect the air through which the plane needs to move to achieve lift-off velocity.

cool
You are falsely treating the plane's jet engines as if it were moving through the air. It is NOT moving forward through the air.

The forward motion of moving through the fluid of air must be removed from your thinking regarding this hypothetical.

In the hypothetical the plane is stationary to it's relative position on the ground.

There is no air being forced through the turbines as there would be if it was moving forward through fluid air. The fuel from the plane at this point is what is moving the turbines of the jet.

There is no forward motion of this plane in the hypothetical.
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