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[quote][i]Originally posted by Steve[/i] "Yes, the plane can take off. The key is that the plane's wheels *freewheel*, they are not driven. the conveyor belt therefore provides NO force to the plane (OK, there's a little friction in the bearings which could provide a couple of pounds force to a nomal GA category airplane, but that's insignificant compared to the thrust. For an RC plane, the situation should be similar). The prop pushes the plane through the air until it reaches takeoff AIRspeed, which is the same no matter how fast the wheels are going. So if you were inside watching the instruments, you would observe that the wheels are spinning at a GROUNDspeed different than the indicated AIRspeed, but that does not matter, since it is AIRspeed you need in order to take off. (Caps added for emphasis)." [/quote]
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