Mythbusters - Plane on a conveyor belt - Jamie and Adam test if an aeroplane can take...

Comments

Guest: Dan (153 days ago)
This can't work! If it did work, why do all airports still use long runways for airplanes? If this worked then all planes would be taking off like VTOL craft, does anyone really think that the military hasn't explored this!!
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Guest: ash (153 days ago)
ok I get that airspeed is what is important and not groundspeed! But if the plane has a forward thust of 25mph, and the tredmill goes at 25mph in the opposite direction then predictibally the plane won't move. As the plane is pysically not moving how can it generate any airspeed to produce a difference in pressure under the wing?
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Guest: Tom (172 days ago)
Vt = 1/2 * mV2 - (2d + mV) you dimwits!!!
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Guest: DoogieTalons (173 days ago)
It's airspeed not wind speed, if the tarp was going 25 MPH the plane still goes 25MPH in the opposite direction to take off due to the prop, the only difference between that and a normal take of is the wheels free spin at 50mph instead of 25mphm, no more energy is needed to take off. Only windspeed over and under the wing will make it take off, period.
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Guest (173 days ago)
'American' is not a race - its a nationality.
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Guest: mucmuc (174 days ago)
Aviator, I hope your 7 year old grows up without the narrow minded ignorance you seem to possess. Why bring race or culture into it. Now you just look like a f*ckwit.
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Guest: Aviator (174 days ago)
My 7 year old managed to work out that it is airspeed not ground speed that counts. That so-called pilot show a very good reason why Americans should never breed.
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Guest: mucmuc (174 days ago)
too much uninformed debate on a myth (or question)started by someone ignorant in simple aeronautics. It is a non-myth, no-one with any aeronautical knowledge and practical experience with aircraft will waste time on it. The aircraft will overcome friction/wheel drag and accelerate and fly. End of story.
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Guest: Jim (174 days ago)
well surely if the aeroplane can generate lift it will leave the conveyor belt?
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Guest: Bollo (174 days ago)
I can't beleive that supposedly educated adults are debating this in such as way that confuses the science so much. This is stuff that can be determine using some very basic physics. It's completely meaningless to say that the plane is going at the same speed as the conveyor belt if it's standing still - what is the speed being measured in relation to?
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Guest: Harry (174 days ago)
(sorry) I'm looking at airspeed, not wheel speed to fly Ofcourse this is true but everyone I have debated this with, on both sides, assume aircraft remains stationary on the conveyor belt (impossible I know) but its a purely hypothetical argument.
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Guest: Harry (174 days ago)
But this argument has always been based as far as I am concerned on the aircraft remaining stationary, as a purely hypothetical argument.
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Guest: Rob (175 days ago)
Yeah it's fair. I thought about it for a while but the reason it just takes off as normal (and simply WILL NOT remain stationary no matter how hard you try) is because all the conveyor actually does is make the wheels turn faster. As soon as you add forward thrust (from the propellor - not the wheels guys), the plane will move forward.
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Guest: Albert Prince (175 days ago)
In order for this test to be legitimate, the plane should have stayed stationary not moving forward as it did. If it was on a proper conveyor it would have to stay still.
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MaGinty (175 days ago)
The test was completly fair. The Aircraft requiers a specific AIRSPEED to take off. If the aircraft had a 25MPH tail wind it would still need a 25MPH head wind to take off giving it a ground speed of 50MPH. His speed relative to the conveyour was 50MPH but as it is the Airspeed that generates lift the ground speed dosent make a difference. I am no pilot, but i have spent about about 15 hours behind the controls of private aircraft and gliders, long enough to know that the pilots prediction in this myth should be enough to ground him, what a moron. Harry, you can go ahead and power your aircraft via a driveshaft to the wheels if you want......just dont expect to fly very far.
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Guest: mucmuc (175 days ago)
Of course the aircraft is moving, it only has to overcome the rolling resistance of the tyres and the friction of the wheel bearings. Unfair test?! Beat the myth? You really think it's gonna fly just because the wheels are turning? I'm a pilot too, I'm looking at airspeed, not wheel speed to fly.
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Guest: Harry (175 days ago)
Maginty-his theory of flight is fine-I am a pilot. The plane wasnt stationary, unfair test.
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Guest: Harry (175 days ago)
This is rubbish. The aircraft is clearly moving in both cases, and therefore has a takeoff run, and therefore has air flowing over the wings. For this to beat the myth the aircraft must be stationary.
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Guest: MaGinty (175 days ago)
Its quite strange that the pilot clearly has no concept of the theory of flight. How was he ever allowed to fly being so stupid?
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Mythbusters - Plane on a conveyor belt

Mythbusters - Plane on a conveyor belt

Jamie and Adam test if an aeroplane can take off on a conveyor, starting with a scale test followed by the real thing