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Message
re: Myth Busters/Can a plane take off on a conveyor belt
Posted on 10/24/07 at 10:56 pm to penthouse
Posted on 10/24/07 at 10:56 pm to penthouse
quote:
Nobody is saying that a plane can't overcome the treadmill, its the distance that it would require to overcome it and the fact that it would have to be such a long as treadmill that makes it so ridiculous.
Won't take any more distance than usual
The treadmill will not affect the speed of the plane
The wheels are there to reduce the friction to allow the plane to move forward. There is really nothing special going on when you add the conveyor belt into the equation.
Posted on 10/24/07 at 10:56 pm to penthouse
quote:No you haven't.
I've dropped to many bombs and killed way too many people to put up with shite from pissant lawyer on a message board.
frickin' stupid arse, dumb as dirt, moron.
Posted on 10/24/07 at 10:58 pm to penthouse
Everyone is making this more complicated that it needs to be.
The simplist form of this myth.
No matter how fast the plane can travel down a normal runway, the treadmill can go just as fast, who cares about the friction or the wheels. The treadmill's purpose is to keep the plane in one place. Think of yourself on a treadmill at the gym. You are running at 5 mph and the treadmill is going 5 mph, you stay in the same spot.
In this senario there would be no air flowing over and under the wings, so no lift is created, so the plane stays grounded.
it's just that simple.
The simplist form of this myth.
No matter how fast the plane can travel down a normal runway, the treadmill can go just as fast, who cares about the friction or the wheels. The treadmill's purpose is to keep the plane in one place. Think of yourself on a treadmill at the gym. You are running at 5 mph and the treadmill is going 5 mph, you stay in the same spot.
In this senario there would be no air flowing over and under the wings, so no lift is created, so the plane stays grounded.
it's just that simple.
Posted on 10/24/07 at 10:58 pm to Powerman
yes there is.
If the plane doesn't have 100+ kts of relative wind traveling over the wings, it doesn't matter how much thrust it generates...if in your scenario the treadmill counteracts all of it.
If the plane doesn't have 100+ kts of relative wind traveling over the wings, it doesn't matter how much thrust it generates...if in your scenario the treadmill counteracts all of it.
Posted on 10/24/07 at 10:59 pm to AllsGroovn
quote:
In this senario there would be no air flowing over and under the wings, so no lift is created, so the plane stays grounded.
Read the damn thread next time, dipshit.
Posted on 10/24/07 at 10:59 pm to AllsGroovn
AllsGrovin is exactly right. Ive tried to say that at several times but i don't know if its getting through.
Posted on 10/24/07 at 11:00 pm to AllsGroovn
quote:Wow. You've read this thread and you're still just as dumb as penthouse.
Everyone is making this more complicated that it needs to be.
The simplist form of this myth.
No matter how fast the plane can travel down a normal runway, the treadmill can go just as fast, who cares about the friction or the wheels. The treadmill's purpose is to keep the plane in one place. Think of yourself on a treadmill at the gym. You are running at 5 mph and the treadmill is going 5 mph, you stay in the same spot.
In this senario there would be no air flowing over and under the wings, so no lift is created, so the plane stays grounded.
it's just that simple.
Posted on 10/24/07 at 11:01 pm to penthouse
quote:
AllsGrovin is exactly right. Ive tried to say that at several times but i don't know if its getting through
He's wrong... but go back to dropping your bombs and killing people.
ETA:
This post was edited on 10/24/07 at 11:02 pm
Posted on 10/24/07 at 11:02 pm to penthouse
quote:But the treadmill doesn't counteract it.
the treadmill counteracts all of it.
It's clear that you've never, ever, been a pilot.
Posted on 10/24/07 at 11:05 pm to LSUBoo
quote:
Read the damn thread next time, dipshit.
Posted on 10/24/07 at 11:07 pm to AllsGroovn
quote:
Think of yourself on a treadmill at the gym. You are running at 5 mph and the treadmill is going 5 mph, you stay in the same spot.
Try the same scenario... except wearing a jetpack.
Posted on 10/24/07 at 11:07 pm to AllsGroovn
quote:
The treadmill's purpose is to keep the plane in one place.
No
It's purpose is too fool idiots like you into thinking it matters.
Posted on 10/24/07 at 11:19 pm to Powerman
Do we all agree on this statement...
without air flow over and under the plane's wings the plane does not have lift and cannot take-off.
If the plane is stationary with no airflow passing it's wings it will NEVER take-off.
without air flow over and under the plane's wings the plane does not have lift and cannot take-off.
If the plane is stationary with no airflow passing it's wings it will NEVER take-off.
Posted on 10/24/07 at 11:22 pm to AllsGroovn
quote:
without air flow over and under the plane's wings the plane does not have lift and cannot take-off.
Yes, this is true.
quote:
If the plane is stationary with no airflow passing it's wings it will NEVER take-off.
Also true.
But the plane wouldn't be stationary.
Posted on 10/24/07 at 11:23 pm to LSUBoo
If the treadmill is matching the plane's forward speed why wouldn't it be stationary. That's the whole point of the treadmill...to make the plane stationary.
Posted on 10/24/07 at 11:25 pm to AllsGroovn
quote:
If the treadmill is matching the plane's forward speed why wouldn't it be stationary. That's the whole point of the treadmill...to make the plane stationary.
Plane's airspeed is 100kts in one direction, the treadmill is 100kts in the other direction. This is all fine and good except they're not connected... the wheels would be going 200kts in the plane's direction, negating the impact of the treadmill. wheels are independent of airspeed or treadmill speed, and act as a buffer of sorts.
Posted on 10/24/07 at 11:27 pm to AllsGroovn
quote:
If the plane is stationary with no airflow passing it's wings it will NEVER take-off.
But the plane won't be stationary
The only purpose of having wheels is to reduce friction (and for landing and stopping the plane later)
The friction won't increase with a conveyor belt and the plane will move forward just as fast as it would if the conveyor belt weren't there.
Posted on 10/24/07 at 11:29 pm to AllsGroovn
quote:
If the treadmill is matching the plane's forward speed why wouldn't it be stationary. That's the whole point of the treadmill...to make the plane stationary.
No
It's to trick people that don't know shite about physics into thinking it will. It's a mind bender; it's not supposed to be really easy and obvious.
Posted on 10/24/07 at 11:32 pm to Powerman
I guess we'll have to wait till the episode airs.
Has anyone else had a problem with some of the myths the mythbusters have supposedly busted or confirmed. They introduce or remove variables that have absolutely nothing to do with what they are testing.
Like the falling bullet episode, the mythbusters proved that a falling bullet cannot kill a person. And a doctor told them - people have died in real life from falling bullets. The brilliant mythbusters didn't care and still called the myth busted.
I love the show, but sometimes they piss me off.
Has anyone else had a problem with some of the myths the mythbusters have supposedly busted or confirmed. They introduce or remove variables that have absolutely nothing to do with what they are testing.
Like the falling bullet episode, the mythbusters proved that a falling bullet cannot kill a person. And a doctor told them - people have died in real life from falling bullets. The brilliant mythbusters didn't care and still called the myth busted.
I love the show, but sometimes they piss me off.
Posted on 10/24/07 at 11:35 pm to AllsGroovn
quote:
Like the falling bullet episode, the mythbusters proved that a falling bullet cannot kill a person. And a doctor told them - people have died in real life from falling bullets. The brilliant mythbusters didn't care and still called the myth busted.
There's a difference between falling straight down and losing the projectile characteristics, and going up and coming down in a parabolic arc. If the bullet goes up and arcs back down, it's still retaining its aerodynamic flight characteristics and can be lethal. If it loses that flight path, it's just a falling object too small to kill someone. Small detail, but big difference.
Or at least that's what I remember from that episode.
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