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[quote][i]Originally posted by Jules S[/i] [quote][i]Originally posted by SVM 286[/i] I haven't read the whole of this thread yet, but I have read the first four pages, so I apologise if I am about to re-quote something someone else has already stated. I am very surprised that this discussion has gone on this long. I'm not sure if it is naivety or misunderstanding of the question on the part of some folks, but the issue has been clouded by statements like ''the wheels on a plane aren't driven'' being made. This is like saying ''custard doesn't taste like gravy'' It's painfully obvious and just causes more arguments. Method of propulsion asides. The fact remains that an aircraft generates forward momentum with it's engine/s. Forward momentum is what generates air pressure on the wings, and as a result, the lift that is required for flight. If the craft is on full throttle on a conveyor belt and even if it had 1000 engines fitted, it would make no difference as the conveyor belt is matching the the craft's speed. It's quite simple realy. If it were possible to launch an aircraft at full throttle from a stationary position, the world's airports would be littered with conveyor belts rather than miles of air strip, and all aircraft carriers would be equipped with the same rather than a short runway and a steam catapult. [/quote] Groan. Its fcuking simple. The plane has jet engines. Thrust is developed through the surrounding air. The conveyor belt has no influence on the air. The plane moves forward, it takes off. Honestly, its not all that difficult to grasp is it? [/quote]
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