Filght 213 for Dallas
This is a discussion on Filght 213 for Dallas within the Off Topic & Humor Discussion forums, part of the The Back Porch category; Lets see how you guys ponder this.
A plane is standing on a runway that can move (some sort of band conveyer). The plane moves ...
January 16th, 2006 06:50 PM
Filght 213 for Dallas
Lets see how you guys ponder this.
A plane is standing on a runway that can move (some sort of band conveyer). The plane moves in one direction, while the conveyer moves in the opposite direction. This conveyer has a control system that tracks the plane speed and tunes the speed of the conveyer to be exactly the same (but in opposite direction).
Does the plane ever take off, and why or why not?
January 16th, 2006 06:55 PM
Wasnt this just posted recently? If not sorry bruce but i have seen it with in last 3 weeks soem where..
I say no .. no lift under the wings since plane it going one way and belt the other wouldnt it not get enough speed?
Im not a theoryist so its beyond me
January 16th, 2006 06:57 PM
Oh Bruce - hard day at the office ????
Well - air speed is everything so this would mean that instead of the usual V1 and rotate being shall we say 150 knots air speed - the plane's airspeed will never even occur!! All we'd have is two diametrically opposite velocities!!
Without airflow over the aerofoil of the wings there will be zero lift. QED! Ground speed does not count - or shall we say standing still.
What is described is a giant treadmill !
Chris - P95
NRA Certified Instructor & NRA Life Member.
"To own a gun and assume that you are armed
is like owning a piano and assuming that you are a musician!."
- a portal for 2A links, articles and some videos.
January 16th, 2006 07:15 PM
I have seen it on a few other boards, I think its the first time here though.
Originally Posted by Bud White
January 16th, 2006 08:43 PM
If you bought a big enough fan that could produce 150+ knots of wind,You could get the plane off the ground at a standstill.
That's the concept of "wind tunnels" which is how they test prototype airplanes.
short wait times. Use 'defensivecarry' as a coupon code for a discount to your order.
January 16th, 2006 08:55 PM
That is why small planes have to be tied down.....something like a Piper Cub can get airborn in a good storm. I have seen a Piper going backward....headed into a stiff wind blowing faster than minimum air speed, ground speed was actually a negitive.
January 16th, 2006 11:00 PM
Can't get airborne. Need airsflow over the wings. Speed at the wheels doesn't do "squat"!
EOD - Initial success or total failure
January 17th, 2006 05:21 PM
Here's what happens when they're not tied down, or at least not well enough I took this picture at Raleigh-Durham International, 9/18/2004, the day after a windstorm with gusts over 60 mph.
Originally Posted by F350
"Terrorists don't seem to be too afraid of stern language. But I do notice, that while the fear of death does not seem to deter these people, the fact of BEING dead does significantly decrease their operational effectiveness. "
- Bill Whittle
By kenn in forum New Members Introduce Yourself
Last Post: June 14th, 2010, 07:20 AM
By Reborn in forum General Firearm Discussion
Last Post: June 15th, 2009, 06:14 PM
By TXXDCC in forum New Members Introduce Yourself
Last Post: August 25th, 2008, 09:14 PM
By 88m in forum Off Topic & Humor Discussion
Last Post: August 24th, 2007, 06:56 PM
By BenGoodLuck in forum New Members Introduce Yourself
Last Post: August 26th, 2005, 10:32 PM