Will the Plane Take-Off - Merged with MythBusters Show Thread
10-22-2007, 09:08 PM
#561
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Originally Posted by revitupwriteitoff
what would happen if you were riding on an airplane & running on a treadmill facing the back of the plane at a speed double that of the plane moving through the air?
you'd be the fastest son-of-a-bitch alive :wink:
10-22-2007, 09:48 PM
#564
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Originally Posted by nicholbr
Lemmings...
10-22-2007, 09:56 PM
#565
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Originally Posted by Chopsie
Speaking of BENding over... I recently found out that chiggers really are the itch you can't scratch.
My friend got scabies at a truck stop once.
We need to get in touch with the Virgin Atlantic guy and see if he'll donate a plane. And a giant treadmill.
10-22-2007, 10:03 PM
#566
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Originally Posted by nicholbr
My friend got scabies at a truck stop once.
We need to get in touch with the Virgin Atlantic guy and see if he'll donate a plane. And a giant treadmill.
Ok, so the game plan is, bang the virgins while running on the treadmills, on a plane. Sounds like a tuffy, but with the right amount of Carb loading, I think we can do it.
12-06-2007, 06:17 PM
#575
I shave my change purse
Airplane + Conveyor Belt + Mythbusters
Set your TiVo's
MythBusters
Air Plane Hour
TV-PG
Dec 12, 9:00 pm
Jamie and Adam take wing to test if a person with no flight training can safely land a 747 and if a plane can take off from a conveyor belt speeding in the opposite direction. Tory, Grant, and Kari jump on some Hollywood-inspired skydiving myths.
woots
http://dsc.discovery.com/tv-schedule...913.x&start=10
MythBusters
Air Plane Hour
TV-PG
Dec 12, 9:00 pm
Jamie and Adam take wing to test if a person with no flight training can safely land a 747 and if a plane can take off from a conveyor belt speeding in the opposite direction. Tory, Grant, and Kari jump on some Hollywood-inspired skydiving myths.
woots
http://dsc.discovery.com/tv-schedule...913.x&start=10
12-06-2007, 06:33 PM
#578
Needs more Lemon Pledge
I know this has been thoroughly discussed here, but I am too lazy to find and read it.
All the conveyor belt does is provide spin to the wheels. No way it generates airflow over the wing, so no lift. Is there more to this?
All the conveyor belt does is provide spin to the wheels. No way it generates airflow over the wing, so no lift. Is there more to this?
12-06-2007, 06:36 PM
#579
Team Owner
Originally Posted by stogie1020
I know this has been thoroughly discussed here, but I am too lazy to find and read it.
All the conveyor belt does is provide spin to the wheels. No way it generates airflow over the wing, so no lift. Is there more to this?
All the conveyor belt does is provide spin to the wheels. No way it generates airflow over the wing, so no lift. Is there more to this?
12-06-2007, 06:38 PM
#580
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Originally Posted by stogie1020
I know this has been thoroughly discussed here, but I am too lazy to find and read it.
All the conveyor belt does is provide spin to the wheels. No way it generates airflow over the wing, so no lift. Is there more to this?
All the conveyor belt does is provide spin to the wheels. No way it generates airflow over the wing, so no lift. Is there more to this?
12-06-2007, 06:39 PM
#581
Senior Moderator
Originally Posted by jlukja
I'm thinking the opposite. The airplane engines push against air, not the conveyor belt, so the plane takes off whether on a conveyor or not.
12-06-2007, 06:39 PM
#582
Back in a TL again.
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<object width="425" height="355"><param name="movie" value="http://www.youtube.com/v/-EopVDgSPAk&rel=1"></param><param name="wmode" value="transparent"></param><embed src="http://www.youtube.com/v/-EopVDgSPAk&rel=1" type="application/x-shockwave-flash" wmode="transparent" width="425" height="355"></embed></object>
12-06-2007, 06:41 PM
#583
Needs more Lemon Pledge
the engines only propel the wing forward THROUGH the air though. Wing must have air flowing past at high enough speed for Bernouli principle to apply effectively enough for lift.
All engines do is move the wing forward fast enough to generate lift. Slower air over the top of the wing than the bottom (airfoil shape) generates lower pressure above the wing, thus lift. move air fast enough, and you generate more lift than your weight, and you fly.
All engines do is move the wing forward fast enough to generate lift. Slower air over the top of the wing than the bottom (airfoil shape) generates lower pressure above the wing, thus lift. move air fast enough, and you generate more lift than your weight, and you fly.
12-06-2007, 06:46 PM
#585
Senior Moderator
the engines provide a thrust that has zero correlation with the wheels and this is demonstrated by the video above. 
12-06-2007, 06:47 PM
#586
Senior Moderator
Originally Posted by iwant1
Could that guy be any more boring?!
12-06-2007, 06:50 PM
#587
The sizzle in the Steak
Originally Posted by vetalik
<object width="425" height="355"><param name="movie" value="http://www.youtube.com/v/-EopVDgSPAk&rel=1"></param><param name="wmode" value="transparent"></param><embed src="http://www.youtube.com/v/-EopVDgSPAk&rel=1" type="application/x-shockwave-flash" wmode="transparent" width="425" height="355"></embed></object>
12-06-2007, 06:56 PM
#588
Needs more Lemon Pledge
All the engines have to do is generate enough wing speed to create lift. If the conveyor is pushing backwards on the entire aircraft, then the engines may have to achieve more than normal forward thrust to equal the required wing speed.
I can count to potato.
I can count to potato.
12-06-2007, 06:57 PM
#589
The YouTube video is blocked at work, but I'm guessing it's the video of an R/C plane on a treadmill. If that is the case, that thing is so flawed, it's not even funny.
First off, the conveyor belt (treadmill) is supposed to match the speed of the wheel. That was a condition of the theory. So as the throttle was increased and the plane started to move forward, the conveyor belt should've matched speed and kept the plane stationary = no airflow over the wings = no lift.
I've confirmed this with a pilot friend/coworker of mine who has a commerical license. He agrees the plane will not take off.
But let's all tune in and see what happens.
First off, the conveyor belt (treadmill) is supposed to match the speed of the wheel. That was a condition of the theory. So as the throttle was increased and the plane started to move forward, the conveyor belt should've matched speed and kept the plane stationary = no airflow over the wings = no lift.
I've confirmed this with a pilot friend/coworker of mine who has a commerical license. He agrees the plane will not take off.
But let's all tune in and see what happens.
12-06-2007, 06:58 PM
#590
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Originally Posted by srika
You think you could have described and presented that experiment in a more exciting manner? If so, how. Please try to limit your response to less than 1000 words.
12-06-2007, 07:01 PM
#591
Senior Moderator
Originally Posted by iwant1
No
just in fun man
12-06-2007, 07:05 PM
#592
Needs more Lemon Pledge
Originally Posted by Pure Adrenaline
The YouTube video is blocked at work, but I'm guessing it's the video of an R/C plane on a treadmill. If that is the case, that thing is so flawed, it's not even funny.
First off, the conveyor belt (treadmill) is supposed to match the speed of the wheel. That was a condition of the theory. So as the throttle was increased and the plane started to move forward, the conveyor belt should've matched speed and kept the plane stationary = no airflow over the wings = no lift.
I've confirmed this with a pilot friend/coworker of mine who has a commerical license. He agrees the plane will not take off.
But let's all tune in and see what happens.
First off, the conveyor belt (treadmill) is supposed to match the speed of the wheel. That was a condition of the theory. So as the throttle was increased and the plane started to move forward, the conveyor belt should've matched speed and kept the plane stationary = no airflow over the wings = no lift.
I've confirmed this with a pilot friend/coworker of mine who has a commerical license. He agrees the plane will not take off.
But let's all tune in and see what happens.
12-06-2007, 07:07 PM
#593
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this is a repost from some where, but I'm just too lazy to search.
12-06-2007, 07:13 PM
#594
Senior Moderator
Imagine a rope attached to the plane, that pulls it forward. Whatever belt is beneath it, the plane will still move forward. Jet engine thrust is just like the rope.
The aircraft has engines that through action/reaction principles cause it to accelerate in relation to the AIR not the belt.As the aircraft starts to move the belt will move in the opposite direction, the only effect this will have is to increase the speed of rotation of the tires, the plane will continue to accelerate in relation to the air and the ground beside the moving belt no matter how fast the belt moves. This may have detrimental effects on the tires but will not detrementally affect the AIRSPEED of the plane. In fact, air entrained by laminar boundary layers on the belt may actually inhance the airflow to the wings, shortening the takeoff run. Depends on how long the landing gear legs are. In the 60's a plane was built with a hovercraft type skirt instead of regular gear, this plane wouldn't even notice the increasing speed of the belt.
Last edited by srika; 12-06-2007 at 07:15 PM.
12-06-2007, 07:21 PM
#595
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Originally Posted by Pure Adrenaline
The YouTube video is blocked at work, but I'm guessing it's the video of an R/C plane on a treadmill. If that is the case, that thing is so flawed, it's not even funny.
First off, the conveyor belt (treadmill) is supposed to match the speed of the wheel. That was a condition of the theory. So as the throttle was increased and the plane started to move forward, the conveyor belt should've matched speed and kept the plane stationary = no airflow over the wings = no lift.
I've confirmed this with a pilot friend/coworker of mine who has a commerical license. He agrees the plane will not take off.
But let's all tune in and see what happens.
First off, the conveyor belt (treadmill) is supposed to match the speed of the wheel. That was a condition of the theory. So as the throttle was increased and the plane started to move forward, the conveyor belt should've matched speed and kept the plane stationary = no airflow over the wings = no lift.
I've confirmed this with a pilot friend/coworker of mine who has a commerical license. He agrees the plane will not take off.
But let's all tune in and see what happens.
you're failing to realize that by the conveyor belt going faster than the plane can physically fly, it just means that the wheels play no part in making the play take off.
and 2nd, the conveyor belt was matching the speed of the wheels, think about it.
if the belt wasn't matching the speed of the wheels that little plane would have just been thrown back and smashed into pieces against the wall.
12-06-2007, 07:33 PM
#598
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btw,
i found it
https://acurazine.com/forums/showthread.php?t=346263
the actual post on page 25
https://acurazine.com/forums/showpos...&postcount=377
i found it
https://acurazine.com/forums/showthread.php?t=346263
the actual post on page 25
https://acurazine.com/forums/showpos...&postcount=377
12-06-2007, 07:37 PM
#599
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Originally Posted by knight rider
My thoughts are if an airplane could take off on a conveyor belt the Navy would have one an aircraft carrier.
12-06-2007, 07:40 PM
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just cause of the recent discussion happening about this topic.. again
