The Mythbusters are so fucking stupid when it comes to science. But brilliant when it comes to entertainment marketing to your average ignorant American.
Science!! Fucking magnets, how do they work?
- Thread starter Flunklesnarkin_sl
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The plane moves past the pylons at a fairly fast speed. It should have stayed directly adjacent to the starting pylon if
the make-shift treadmill was moving backward as fast as the plane was moving forward. That was not the case. Therefore that means the plane was moving forward faster than the makeshift treadmill was moving in the opposite direction. The plane had forward momentum that allowed it to reach take-off speed.
Gravel
Mr. Poopybutthole
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I can't believe we've still got people talking about that. Planes get their forward momentum from their propeller or engine (jet). The wheels are just there because it's a lot easier to take off and land on something that can freely rotate as opposed to the belly of the plane.
Tuco
I got Tuco'd!
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The wheels are there to reduce or eliminate friction, not propel the plane. Plane will move forward no matter how fast the treadmill is going... People have this crazy idea that a treadmill will keep a plane in place... A plane isn't a car! A simple high school physics diagram will show you all the vectors of the forces at work. Imagine if you dropped a plane from a stationary point in the sky and started the engines, it'd fly just fine.
It hurts my fucking soul that people don't immediately fucking understand the concept. Better not try to take off in a sea plane while the tide's coming in amirite gais? Kill yourself.
I have no doubts about our nation's poor showing in math and science rankings. The responses here are truly pathetic...
Dear Tuco,
your generosity is noted.
The lavish dispensation of same may be contributing to the excess of lurkers vs posters. Whether continuation of this protocol will increase posting content, member numbers, and interested site visitors remains to be seen.
This portrait should liven up the decor of the family room. Consideration for hanging it over the fireplace is presently being entertained.
All the best to you with your present modus operandi.
Regards.
ps; word of caution: excessive sensitivity tends to reduce admin/mod duty effectiveness.
Crap!!!
Stifling discourse, and displaying insensitivity to differing knowledge paradigms tends to result in less dialogue, and less interesting dialogue. If only those with knowledge of, and foreknowledge on, a given area, topic, or subject are the sole discussants, then banality, instead of entertaining interaction, ensues.
Escalating the discussion of a trivial amusing brain-teaser in a fun thread to an infraction level event is the height of stupidity and overreach. Issuing four infraction points where none was required, needed or deserved is inane. Does that mean that there should be no posting of anything unless one is 100% sure of every detail and nuance of a given topic or subject?
Enough, already!
This short-sighted judgement-challenged moderator should be reigned in.
Yes! My Jimmies are bloody well rustled.
Crap on a cracker!!!
Stifling discourse, and displaying insensitivity to differing knowledge paradigms tends to result in less dialogue, and less interesting dialogue. If only those with knowledge of, and foreknowledge on, a given area, topic, or subject are the sole discussants, then banality, instead of entertaining interaction, ensues.
Escalating the discussion of a trivial amusing brain-teaser in a fun thread to an infraction level event is the height of stupidity and overreach. Issuing four infraction points where none was required, needed or deserved is inane. Does that mean that there should be no posting of anything unless one is 100% sure of every detail and nuance of a given topic or subject?
Enough, already!
This short-sighted judgement-challenged moderator should be reigned in.
Yes! My Jimmies are bloody well rustled.
Crap on a cracker!!!
Infractions for the guy that actually understood the physics of the problem? Wow...
What's the purpose of this thread again???
What's the purpose of this thread again???
I'm able to watch the video and see their experiment failed to replicate the basic premise of the myth, which is typical for them.
If the force backwards from the "treadmill" acting on the wheels and through friction onto the plane equals the force forward due to propeller thrust, the plane (and thus the wings) won't be moving through the surrounding air, and thus won't provide lift.
As TP said, their experiment was shit.
The myth isn't "Can a plane's thrust overcome the force of a treadmill?" That's all their experiment proved.
Bottom line is, neither needed an experiment, they're both common sense (for anyone who passed high school physics). Hence the Mythbusters win as they count their cash after wasting an hour of your time.
If the force backwards from the "treadmill" acting on the wheels and through friction onto the plane equals the force forward due to propeller thrust, the plane (and thus the wings) won't be moving through the surrounding air, and thus won't provide lift.
As TP said, their experiment was shit.
The myth isn't "Can a plane's thrust overcome the force of a treadmill?" That's all their experiment proved.
Bottom line is, neither needed an experiment, they're both common sense (for anyone who passed high school physics). Hence the Mythbusters win as they count their cash after wasting an hour of your time.
This will never happen unless the brakes are on or the wheels are otherwise terribly, terribly inefficient.
http://www.airplaneonatreadmill.com/
Tuco
I got Tuco'd!
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How fast would the treadmill have to be to stop the plane from moving?
The higher the wheel speed, the greater the frictional forces. The concept doesn't work with anything other than a fictitiously large treadmill which can move at the plane's takeoff speed at a minimum, which is what you would need to put a plane on it. What they had was crap, because the truck isn't fast enough to cancel the forward thrust of the plane.
That small plane they used probably has an insanely low take-off airspeed. If it is capable of 100mph+ at max throttle and the truck can only accelerate to say 60mph in a reasonable amount of time that's a differential of 40mph, and probably enough to allow it to take off. Watch the video and you can see that because they hit the throttle at the same time the plane gets a good running start before the truck is up to a reasonable speed.
Again, shitty setup. Hold the plane in place until the treadmill gets to the plane's max capable ground speed, then let it go. It won't take off.
And I'm now done with this troll. Back to your regularly scheduled skyence...