Plane on conveyor belt

[BAW0343]

I have a feeling nobody is really understanding anyone here

[Jeff.Guo]

[quote]I don't disagree, the aircraft can accelerate and takeoff regardless of what the conveyor belt is doing.

[ApplePie]

I don't know about you people, but I find this thread hilarious.

[beaky]

[quote] So its groundspeed (on the conveyor belt) is takeoff speed, HOWEVER its actual motion, and airspeed, is zero.

[DaveSims]

The myth, at least in my interpretation, isn't whether or not the aircraft will have enough thrust to overcome the motion of the conveyor belt.

[beaky]

[quote][quote]I don't disagree, the aircraft can accelerate and takeoff regardless of what the conveyor belt is doing.

[Jeff.Guo]

Leave static friction out of it, that little bit seems to lie beyond what we can comprehend here.

The takeoff roll distance will be virtually the same. If it was a high school level physics class, there'd a note saying "ignore friction"...

[TacitBlue]

I don't know about you people, but I find this thread hilarious.

I do as well, that's why I've given up on trying to contribute.

[OVERLORD_CHRIS]

Thrust is thrust. With a single engine aircraft, there is no sucking of air toward or over the wings, the slipstream is all along the fuselage. Also, even with a "crop duster" as you so eloquently put it, you do need a certain amount of thrust just to get moving, considerably less than you need to keep moving. If you try taxiing a real (non FS) airplane, you'll understand.

You miss what I said about the C-130 witch does draw air over the wing, because the pitch of the blades change and bite more at the air. And given the relation of where the engines are on the wings, and most large prop planes for that matter, the air being pulled by the blades ends up going over and under the wings, helping with lift.

As far as thrust, I am seeing it from my everyday point of view dealing with wide bodies and heavies on daily basis, such as: An-124's, C-5's, 747-200/400's, C-17's, C-130's, and KC-135's. And since almost all of them taxi out near maxed out on weight, it takes almost 50% or more thrust just to get out of the chocks(usually not much more). But once moving they retard the throttles down to the bear min to keep up momentum, until they reach the hold line near the runway were they have to come to a complete stop again before they get clearance. But if they are lucking they can get take off clearance while rolling and not have to stop. 




[quote]I have a feeling nobody is really understanding anyone here