Back to the airplane on a giant tread mill

[Preston_Hall]

Will it take off? Yes. I saw it on Myth Busters the other day.

 

[mtruex]

Will it take off? Yes. I saw it on Myth Busters the other day.

i must have missed it, was there a conversation on this topic ? i saw it too AIR SPEED !!!

 

[tnrcboatracer]

NNNOOOOOO!!!!!!!!!! Not again. Please search for the 6 pages of nonsense and read it to yourself............

 

[moparbarn]

NNNOOOOOO!!!!!!!!!! Not again. Please search for the 6 pages of nonsense and read it to yourself............

run, jon, run !!!!!!!!! :lol: :lol: :lol: :lol: :lol:

 

[Ron Olson]

They played that episode again? It still didn't convince me. As far as I'm concerned you still need airspeed under the wings to get lift otherwise we'd all be driving flying cars.

 

[TCHedOff]

They played that episode again? It still didn't convince me. As far as I'm concerned you still need airspeed under the wings to get lift otherwise we'd all be driving flying cars.

That f'd me up too, but hey short of trying it yourself.... The mini version worked and the full size - stumped me (in front of the wife after I shot my mouth off). Guess the prop getting up must provide enouth air flow over the wings to get-r-done (I agree w/Ron - need wings for lift - otherwise planes'd be just props and fuselage - who needs wings for lift!)

 

[tnrcboatracer]

Technically, you only need circulation for lift. All it takes is a pressure differential. A horizontal spinning wicker basket can create lift. Or any spinning ball.

But enough of this. Look up the old thread, just don't resurrect it!!!!!!!

 

[moparbarn]

jon, don't you listen, RUN - RUN NOW !!!!!!!!!!!!!!!!! :lol: :lol: :lol:

 

[Rokieboater]

They played that episode again? It still didn't convince me. As far as I'm concerned you still need airspeed under the wings to get lift otherwise we'd all be driving flying cars.

That f'd me up too, but hey short of trying it yourself.... The mini version worked and the full size - stumped me (in front of the wife after I shot my mouth off). Guess the prop getting up must provide enouth air flow over the wings to get-r-done (I agree w/Ron - need wings for lift - otherwise planes'd be just props and fuselage - who needs wings for lift!)

Put your roller blades on and get on the tread mill..... put it on any speed you want.... hold on so you don't fall.... you pretty much stay stationary... adjust speed on treadmill and you pretty much stay stationary...... now have some one give you a push in the back and you move forward, up the tread mill....

That push in the back is similar to the thrust of the prop/jet engine to move you forward.......the tread mill can spin your wheels as much as you want but thrust will still move you forward... a better way is to have your dog on a leash in front of the tread mill, tie it around your waste, turn it on high to get your roller blades really humming and then let the dog run forward at full speed..... now here is the fun part.....put your arms out like wings and see if you can fly....... probably won't fly but your chest will be impaled into the front of the treadmill... have your wife video tape it and post it here on Intlwaters for all to see....

A stationary plane will not lift off but a plane on the treadmill/conveyor belt will eventually move forward, get airflow over the wings and fly...

Well thats my humble opinion... anyone who post the above video will receive a case of corona's from me....

Robert Holland

 

[piper_chuck]

If only I had a dog! :lol:

 

[Preston_Hall]

They played that episode again? It still didn't convince me. As far as I'm concerned you still need airspeed under the wings to get lift otherwise we'd all be driving flying cars.

Ron, the plane did have air speed. It went the same distance down the runway in each case.

 

[Ron Olson]

OK,where's the beer?

 

[Boris Mazor]

I'll add my two penny.

On the video not a treadmill! The air plane just follows the car and finally gets air speed and take of from the ground. Das not matter that belt is under airplane on runway!!!!! Airplane moving on the ground!!!!!

On the treadmill airplane will move only on the belt, but not in the runway! The belt have end, runway is not!!!. No any air speed on tread mill. The prop just have enough trust to compensate whill spinning! If trust is bigger airplane will left treadmill! Boris

 

[Rokieboater]

Not that video, the funnier video with your dog causing so much pain to the knuckle head willing to try it. :lol: :lol: :lol:

Robert

 

[Sean Bowf]

Ok...no mystery there at all....thought you guys were saying the aircraft was staying still (no forward motion).

In short, the aircraft still had forward motion, that forward motion of the aircraft allowed the wings to create lift.

In the mental picture I had prior to seeing the video...the aircraft was staying still on a tredmill type device and taking off...which did not make any sense to me, because the aircraft would not have any forward motion, and therefore would not create any lift...

Sean

 

[tnrcboatracer]

OK, I can't resist any longer. Aircraft take off with speed of the air relative to the wings. The speed relative to the ground or wheels is of no consequence. Think of it this way: say the airplane needs 25mph air speed to take off. If there was a 50mph wind, the airplane would lift off if it was moving 25mph BACKWARDS relative to the ground. It's the same principle with a kite. That's the same reason aircraft carriers steam into the wind for takeoffs and landings. WInd speed + 30 knots boat speed + catapult speed = takeoff speed of F18.

 

[LarryConrad]

OK, I can't resist any longer. Aircraft take off with speed of the air relative to the wings. The speed relative to the ground or wheels is of no consequence. Think of it this way: say the airplane needs 25mph air speed to take off. If there was a 50mph wind, the airplane would lift off if it was moving 25mph BACKWARDS relative to the ground. It's the same principle with a kite. That's the same reason aircraft carriers steam into the wind for takeoffs and landings. WInd speed + 30 knots boat speed + catapult speed = takeoff speed of F18.

Ha!Ha! 30 knots...Nuke bird farms are faster than that!

 

[Andy Greene]

I'm pretty sure this is a WELL BEATEN HORSE-

But you guys have fun with it-

http://www.intlwaters.com/index.php?showto...mp;hl=treadmill

Andy

 

[tnrcboatracer]

OK, I can't resist any longer. Aircraft take off with speed of the air relative to the wings. The speed relative to the ground or wheels is of no consequence. Think of it this way: say the airplane needs 25mph air speed to take off. If there was a 50mph wind, the airplane would lift off if it was moving 25mph BACKWARDS relative to the ground. It's the same principle with a kite. That's the same reason aircraft carriers steam into the wind for takeoffs and landings. WInd speed + 30 knots boat speed + catapult speed = takeoff speed of F18.

Ha!Ha! 30 knots...Nuke bird farms are faster than that!

I know, I originally posted 30+ knots. The point was that if there was a 20 knot head wind with a 30 knot boat speed means a 58mph wind across the deck. quite a breeze.
I don't recall the exact speed of a Nimitz class carrier, but I know that they can outrun most of their their escorts, and run them out of fuel, as well. I thought it was 35-40 knots, but I'm not sure. Care to elaborate?

 

[moparbarn]

jon, are your legs broke <_< :lol: :lol: ?????????