plane on a conveyerbelt
i need to know the conditions involved. is it a big long runway sized conveyer belt or is it on a treadmill ?
Doesn’t matter really. On a short treadmill it will move forward, fall off the end and then take off as normal.
On a long runway sized treadmill it will move forward and take off as normal.
(amazingly some people still don’t get this 😯 )Posted 5 years agoatlazMember
GrahamS – Why? I have been using computers for a living for years and other than basic stuff about how they work I’d be in no more position to explain how they really work than the next man. My best guess is magic.
That said I do know how planes fly and why the “discussion” is so comically stupid so perhaps it’s a shit analogyPosted 5 years ago
The mythbusters experiment doesn’t really match the true “spirit” of the plane on a conveyer question though as the conveyer is undergoing travel in a direction (rather than being stationary but rotating)
Air movement in and around the wings generates lift, so if the plane is moving, because the conveyer is, as in the mythbusters experiment, if you’re lucky, at some point, lift is greater than gravity, and the plane will take off.
The proper test should be when the plane is on a stationary but still rotating conveyer… 😉Posted 5 years ago
“The proper test should be when the plane is on a stationary but still rotating conveyer… “
Eek! Worded that badly…. The proper test should be when the plane is on a conveyer that is stationary relative to the earth, but the belt on which the plane is sitting on is still rotating… 😉Posted 5 years agoalex222Member
well the speedo was linked to the wheels in the delorean… so that would suggest maybe wheel speed/revs was enough?
Are you sure?
ahhh but then in like BTTF 3 it flies…
Doesn’t it fly at the end of the first film – though admittedly this is when it has returned to the present from the future (that is to say once it had the hovering wheels upgrade)Posted 5 years ago
Why so? (once you take the initial inertia out of the equation).
Tarp Direction: <—-
Forces acting <—- are pulling the plane by the base of its wheels. Wheels can spin freely.
Forces resisting this, acting only on the plane, are inertia (as you said) plus I would suppose some slight drag from wind resistance, increasing with speed.
Forces <— are obviously far greater than forces –>, but forces -> are only acting on the plane, so it has less total force acting in <- than the tarp and is free to spin its wheels.
Still don’t see how this helps your argument.Posted 5 years ago
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