KillJoy Posted January 30, 2008 Report Share Posted January 30, 2008 Said it before, I'll say it again. The propeller pulls the plane while on the ground until the plane reaches a speed at which sufficient lift is produced, then the plane lifts. The prop then pulls the plane through air. That pulling forces air over the wings, and creates the lift that lets the plane fly. KillJoy Quote Link to comment Share on other sites More sharing options...
TheHaze Posted January 30, 2008 Report Share Posted January 30, 2008 Depends on how they setup the test. You can make it go either way depending on how you set it up. Exactly. Quote Link to comment Share on other sites More sharing options...
Kevin R. Posted January 30, 2008 Report Share Posted January 30, 2008 Yes, they could setup the test to fuck this up. There is a million ways they can do it. Quote Link to comment Share on other sites More sharing options...
Scotty2Hotty Posted January 30, 2008 Report Share Posted January 30, 2008 http://www.smiliesftw.com/huge/hugeoopies.gif Quote Link to comment Share on other sites More sharing options...
Berto Posted January 30, 2008 Report Share Posted January 30, 2008 Vector.Diagram. Will take off. Quote Link to comment Share on other sites More sharing options...
Guest FooFooMaru Posted January 30, 2008 Report Share Posted January 30, 2008 I'll be at work. Pumped to read on here what happens. Bwhawh Quote Link to comment Share on other sites More sharing options...
Clifford Automotive Posted January 30, 2008 Report Share Posted January 30, 2008 If the treadmill INSTANTLY matches the forward thrust produced by the engines, it will not move. not moving in a forward motion = no airspeed = no air moving over the wings = no lift KillJoy ditto Quote Link to comment Share on other sites More sharing options...
1Quik7 Posted January 30, 2008 Report Share Posted January 30, 2008 Explain to me how a treadmill can match engine thrust? from the video preview...i'm rather disappointed with their "plane"...it's a simple park flyer...prolly makes 5grams of thrust. i dunno if that's just a working model and they plan to step it up....but that little plane is so light the wind coming off the rotating tread mill would be more than enough to get it off the ground. we'll see..usually they do something crazy. Quote Link to comment Share on other sites More sharing options...
TheHaze Posted January 30, 2008 Report Share Posted January 30, 2008 from the video preview...i'm rather disappointed with their "plane"...it's a simple park flyer...prolly makes 5grams of thrust. i dunno if that's just a working model and they plan to step it up....but that little plane is so light the wind coming off the rotating tread mill would be more than enough to get it off the ground. we'll see..usually they do something crazy. That was just a model. They're using a real plane on a car-pulled tarp, simulating a treadmill. Quote Link to comment Share on other sites More sharing options...
dan93z28 Posted January 31, 2008 Report Share Posted January 31, 2008 how could it possibly get lift to take off, if there is no air going over the wings? if the plane has no horizontal displacement change, relative to the atmosphere, it will not generate lift. Quote Link to comment Share on other sites More sharing options...
wheezy Posted January 31, 2008 Report Share Posted January 31, 2008 how could it possibly get lift to take off, if there is no air going over the wings? if the plane has no horizontal displacement change, relative to the atmosphere, it will not generate lift. It will be moving horizontally because the prop or jet will be pulling it. If the wheels made it move then it wouldnt take off, it would be sitting still relative to the ground. Quote Link to comment Share on other sites More sharing options...
Skinner Posted January 31, 2008 Report Share Posted January 31, 2008 how could it possibly get lift to take off, if there is no air going over the wings? if the plane has no horizontal displacement change, relative to the atmosphere, it will not generate lift. that part you are correct about. the plane will still move forward do to thrust from the prop. moving trap will have no effect. also the plane is around 400 lbs. the trap is 2500 ft long and the plane does fly. Quote Link to comment Share on other sites More sharing options...
cptn janks Posted January 31, 2008 Report Share Posted January 31, 2008 i dont see how anyone with half of their brain working would think that it WOULDNT take off? Quote Link to comment Share on other sites More sharing options...
dan93z28 Posted January 31, 2008 Report Share Posted January 31, 2008 It will be moving horizontally because the prop or jet will be pulling it. If the wheels made it move then it wouldnt take off, it would be sitting still relative to the ground. i see. i thought the idea was that the treadmill would match the thrust of the plane till a point that it wasn't moving. i thought that the whole point was that the plane would not be moving when it took off(which is ridiculous), but in the case that the treadmill will have negligible affect on the forward motion of the plane(which it will), then i agree it will most definitely take of. Quote Link to comment Share on other sites More sharing options...
Skinner Posted January 31, 2008 Report Share Posted January 31, 2008 i dont see how anyone with half of their brain working would think that it WOULDNT take off? maybe your using the wrong half then because it does take off. Quote Link to comment Share on other sites More sharing options...
cptn janks Posted January 31, 2008 Report Share Posted January 31, 2008 maybe your using the wrong half then because it does take off. huh? i know it will take off. more than 50% of my brain is working. Quote Link to comment Share on other sites More sharing options...
Skinner Posted January 31, 2008 Report Share Posted January 31, 2008 huh? i know it will take off. more than 50% of my brain is working. haha guess I'm using less then 50%. Misread your post. Quote Link to comment Share on other sites More sharing options...
TheHaze Posted January 31, 2008 Report Share Posted January 31, 2008 i dont see how anyone with half of their brain working would think that it WOULDNT take off? Well, I thought the same about anyone being liberal... Quote Link to comment Share on other sites More sharing options...
KillJoy Posted January 31, 2008 Report Share Posted January 31, 2008 After reading this.... what is the link to the original question??? KillJoy Quote Link to comment Share on other sites More sharing options...
BIGGU Posted January 31, 2008 Report Share Posted January 31, 2008 ill be watching but ill be paying more attention to Kari Byron then anything else Quote Link to comment Share on other sites More sharing options...
1Quik7 Posted January 31, 2008 Report Share Posted January 31, 2008 ill be watching but ill be paying more attention to Kari Byron then anything else +1 sexy nerd chicks rule Quote Link to comment Share on other sites More sharing options...
Doug1647545489 Posted January 31, 2008 Report Share Posted January 31, 2008 It will take off. Quote Link to comment Share on other sites More sharing options...
Mallard Posted January 31, 2008 Report Share Posted January 31, 2008 My position on this is the same as when this was first posted a year ago. The experiment is bogus because the airplane won't stay on the conveyor belt. An airplane produces thrust to pull itself through the air. It doesn't matter what the wheels under it are doing, it will pull itself through the air and off of the belt. Draw a free body diagram. Quote Link to comment Share on other sites More sharing options...
Kevin R. Posted January 31, 2008 Report Share Posted January 31, 2008 So do you guys who think it won't take off feel dumb yet? Quote Link to comment Share on other sites More sharing options...
TheHaze Posted January 31, 2008 Report Share Posted January 31, 2008 So do you guys who think it won't take off feel dumb yet? I'd feel dumb for several different reasons, like if I was a smoker, drove an automatic car, or maybe stroked myself off to the idea that I was correct about an internet myth on a television show. Quote Link to comment Share on other sites More sharing options...
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