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re: Myth Busters/Can a plane take off on a conveyor belt
Posted on 12/6/07 at 2:12 pm to LSUBoo
Posted on 12/6/07 at 2:12 pm to LSUBoo
quote:
You're just not getting the fact that the treadmill is inconsequential, since the engines are pushing against the air, and not the ground.
I know that the engines are pushing against the air. And I know that the treadmill does nothing. Having the treadmill running will have the same effect as the plane just sitting on a treadmill that doesn't work.
Posted on 12/6/07 at 2:13 pm to LSUBoo
Seriously, you're missing the point. The engines are pushing against the air, you're right, but this has nothing to do with LIFT.
Posted on 12/6/07 at 2:13 pm to White Shadeaux
quote:
the Milennium Falcon flew in a straighter line than other ships?
in a mannor of speaking, yes.
the falcon didn't avoid the empire's systems while smuggling from kessel.
Posted on 12/6/07 at 2:14 pm to MulesAFpilot
quote:
Having the treadmill running will have the same effect as the plane just sitting on a treadmill that doesn't work.
Exactly... the plane will move forward like normal and take off. The wheels will just be working double-time if the treadmill is running.
Posted on 12/6/07 at 2:15 pm to VanRIch
Well here's my question... how big is this treadmill?
I ask, because if it is small, it won't takeoff... huge, then it could work.
I ask, because if it is small, it won't takeoff... huge, then it could work.
This post was edited on 12/6/07 at 2:16 pm
Posted on 12/6/07 at 2:16 pm to MulesAFpilot
quote:
how big is this treadmill?
<throws paper weight at mules>
Posted on 12/6/07 at 2:16 pm to MulesAFpilot
quote:
Well here's my question... how big is this treadmill?
as long as a typical runway.
Posted on 12/6/07 at 2:18 pm to LSUBoo
quote:
The wheels will just be working double-time if the treadmill is running.
Then that totally changes the situation from what I thought it was.
My understanding is that you have the plane "moving" about 100 mph and the treadmill moving 100 mph in the opposite direction. Therefore the plane will be sitting still. Now if they wheels surge into turbo speed, then sure the plane can take off. But the plane will not take off while moving 0 mph.
Posted on 12/6/07 at 2:20 pm to LSUBoo
Well then that changes things. I didn't see that it was a runway sized treadmill. HUGE treadmill.
I guess now it all depends on the friction of the wheels, and if the plane has enough extra thrust to overcome the drag.
I guess now it all depends on the friction of the wheels, and if the plane has enough extra thrust to overcome the drag.
This post was edited on 12/6/07 at 2:22 pm
Posted on 12/6/07 at 2:20 pm to Dale Murphy
quote:
My understanding is that you have the plane "moving" about 100 mph and the treadmill moving 100 mph in the opposite direction.
The plane's engines are thrusting (against the air, not the ground) at 100 mph, and the treadmill is moving in 100 mph the opposite direction. (or whatever speed is takeoff speed...) So, the wheels would be rotating with a point velocity of 200 mph to absorb both forces... the plane still moves like normal, still takes off like normal.
Posted on 12/6/07 at 2:23 pm to MulesAFpilot
quote:[throws toaster at mules]
Well then that changes things. I didn't see that it was a runway sized treadmill. HUGE treadmill.
quote:[plugs toaster in]
I guess now it all depends on the friction of the wheels, and if the plane has enough extra thrust to overcome the drag.
This post was edited on 12/6/07 at 2:25 pm
Posted on 12/6/07 at 2:26 pm to just me
Sorry I didn't catch this earlier... I was coming into the conversation at different times of the day. I was busy flying a real plane that took off from a runway and not a treadmill.
I just didn't see that the treadmill was some huge treadmill.
I just didn't see that the treadmill was some huge treadmill.
Posted on 12/6/07 at 2:31 pm to MulesAFpilot
actually if the treadmill is moving fast enough, it will pull the air along with it, causing the plane to eventually lift.... i think that the speed required would be nearly impossible though.
Posted on 12/6/07 at 2:36 pm to C
Why would you even have a damn treadmill if it was the length of the runway? 
Posted on 12/6/07 at 2:37 pm to RAGINTIGER
quote:
Why would you even have a damn treadmill if it was the length of the runway?
yeah pretty pointless
Posted on 12/6/07 at 2:37 pm to LSUBoo
Wheels have nothing to do with flight.
So you're saying that if a plane were in perpetual nonmotion, it would just all of a sudden take off and fly?
So you're saying that if a plane were in perpetual nonmotion, it would just all of a sudden take off and fly?
Posted on 12/6/07 at 2:38 pm to RAGINTIGER
to confuse people...
Posted on 12/6/07 at 2:39 pm to Colonel Hapablap
Take me off the list.
That thing is flying right off the conveyor just like it would off concrete. The wheels are just going to be turning faster when it does it.
It's a sneaky question till you think about it.
The plane will fly.
That thing is flying right off the conveyor just like it would off concrete. The wheels are just going to be turning faster when it does it.
It's a sneaky question till you think about it.
The plane will fly.
Posted on 12/6/07 at 2:40 pm to Colonel Hapablap
This conversation is like talking to these fricking guys...
Posted on 12/6/07 at 2:41 pm to faxis
it looks like the converts are overwhelming enough that the list is meaningless at this point.
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