Airplane Flight Question - Page 3 - United Bimmer Community

**donald1476** · 11-29-2005, 02:06 AM

Umm, can we not think for ourselves?

**dinanM6** · 11-29-2005, 02:07 AM

OK THEY PUSH AGAINST THE ATMOSPHERE WHAT THE FUCK DOES THAT MEAN. AND THE PLANE NEEDS THE WHEELS FOR MORE THAN TO REDUCE FRICTION DO YOU KNOW WHAT A PAIN IT WOULD BE TO MOVE A PLANE WITH OUT WHEELS IT WOULD SUCK. SO IN THE ENGINES PUSH THE PLANE YES BUT IF THE PLANE ROLLS ALONG ON THE WHEELS AND THE RUNGWAY MOVES IN THE OPPOSIT DIRECTION THEY CANCEL EACH OTHER OUT THEREFORE THERE IS NO MOVEMENT AND IF THERE IS NO MOVEMENT THERE IS NO AIR MOVING ACROSS THE WINGS NO AIR=NO LIFT SIMPLE. ARGH I HATE THIS THREAD I NEED SOME AIR.

Edited for size.

**komodo** · 11-29-2005, 02:08 AM

Quote:

Originally Posted by donald1476

Umm, can we not think for ourselves?

I did, I'm just throwing some more information and ideas out there for people to use.

There's over 100 pages on this question on another forum.

**donald1476** · 11-29-2005, 02:08 AM

I'm not even gonna bother reading that.

In reference to DinanM6

**komodo** · 11-29-2005, 02:10 AM

Quote:

Originally Posted by donald1476

I'm not even gonna bother reading that.

In reference to DinanM6

Fixed. =/ That was pages and pages... a bit much.

The plane can fly.

**komodo** · 11-29-2005, 02:11 AM

Quote:

Originally Posted by dinanM6

OK THEY PUSH AGAINST THE ATMOSPHERE WHAT THE FUCK DOES THAT MEAN. AND THE PLANE NEEDS THE WHEELS FOR MORE THAN TO REDUCE FRICTION DO YOU KNOW WHAT A PAIN IT WOULD BE TO MOVE A PLANE WITH OUT WHEELS IT WOULD SUCK. SO IN THE ENGINES PUSH THE PLANE YES BUT IF THE PLANE ROLLS ALONG ON THE WHEELS AND THE RUNGWAY MOVES IN THE OPPOSIT DIRECTION THEY CANCEL EACH OTHER OUT THEREFORE THERE IS NO MOVEMENT AND IF THERE IS NO MOVEMENT THERE IS NO AIR MOVING ACROSS THE WINGS NO AIR=NO LIFT SIMPLE. ARGH I HATE THIS THREAD I NEED SOME AIR.

Edited for size.

You say they cancel each other out, but the engine is exerting force, while the wheels are just rolling with no force either direction.

**donald1476** · 11-29-2005, 02:12 AM

**donald1476** · 11-29-2005, 02:14 AM

Waiting for a response dinan..

**donald1476** · 11-29-2005, 02:17 AM

Oh and here's more proof http://www.avweb.com/news/columns/191034-1.html

**komodo** · 11-29-2005, 02:18 AM

Did you make that image?

**donald1476** · 11-29-2005, 02:19 AM

No I got it from this http://forum.physorg.com/index.php?s...ic=2417&st=225.

**komodo** · 11-29-2005, 02:24 AM

Gotcha. There's a thread on OT of this also that's 220 pages now.

**donald1476** · 11-29-2005, 02:28 AM

I don't see how it's that difficult.

**dinanM6** · 11-29-2005, 03:32 AM

okay okay you win

**Dudesky** · 11-29-2005, 05:12 AM

The definitive answer is no, the plane will not take off. It has nothing to do with wheels, skis, conveyor belts, engines, whatever. The fact that both the plane and the atmosphere are standing still is why it won't take off.

Lift is generated by way of the Bernoulli principle: as others here have stated, faster moving air = lower pressure, and slower moving air = higher pressure. The curve on the top of the wings causes air to move over it faster than below it, allowing the denser air below to support the wings in flight. Either the air has to move through the wings, or the wings have to move through the air. This applies to anything- birds, gliders, jets, helicopters, boomerangs, whatever.

That said, if the engines could move enough air through the plane, then it would rise in place. The problem is, engines are designed to create thrust to propel the plane forward, NOT to move air over and through the wings. The air they move in front of the aircraft goes right to the intake of the engines and out the back. And whatever ambient air it does move through is not enough to overcome the weight of the aircraft. The physical forward motion of the plane through the atmosphere, or the atmosphere moving across the wings is what gives it lift, not the engines, and movement via theory or postulation does not work. It has nothing whatsoever to do with the plane's speed or what it's sitting on- it can lift off at 0mph, so long as enough air is passing through its wings, and you certainly don't need a conveyor belt for that to happen. Just because the ground is moving doesn't mean the atmosphere is moving along with it.

Think of it this way: take the engines out of the equation . . if you kept a glider in place and revved up that conveyor to 11 million mph, the damn thing would still never take off.

If the theory was even plausible, why don't we have conveyor belts on aircraft carriers? If it were possible, that would save so much precious deck space over the steam catapult systems! If you still don't agree, then produce proof by concrete example of how your theory works. It's nothing more than a silly riddle