Physics Question: Will the plane take off? (27 page debate on elisetalk)

but not necessarily in that order. :stuck_out_tongue:

^ brain leakage might be a problem, right? lol

*only applies if there is a brain in that particular person’s head in the first place

Because of the bearings in the wheels, the wheels are not technically attached to the airplane.

my head hurts.

Ok, so I have done a lot of research now and am now voting yes.

For all those of you who said people that thought it would not fly are idiots, I would suggest that the real idiots are you. Obviously you weren’t articulate enough to explain it to me. I consider myself educated, with a lot of real world experience as I am older than dirt.

I do agree it will fly, I finally found a good link which made sense to me. Too bad all you “smart” people didn’t have the brains to explain it so an “idiot” could understand it…

Quoting myself for the third time.
I may have to leave NYSPEED because I don’t want to be associated with retards.:stuck_out_tongue:
My original post makes it VERY simple to understand.
IT DOESN’T MATTER EVEN IF THE WHEELS ARE SPINNING AT 999,999,999,999,999,999,999 RPM.
(Well actually the gyroscopic affect may affect the stablility of the plane but there is no way you people would understand that so I won’t bother to explain it)

Butch I just read your post, my post was not directed at you specifically.

i’m gonna let this one go because I actually like you. lol

The treadmill has nothing to do with anything. An airplane is driven by either a propeller or a jet engine, both which provide thrust not through the wheels but through spinnung blades/turbines. It is pulled forwards by these, while the wheels spin freely. The aircraft will still accelerate forwards, despite the speed of the wheels. It will lift off when the AIRSPEED surpasses its stall speed. As an example, say 150 MPH. If the treadmill is matching the speed of the wheels, than effectively the wheels will be going 300 MPH while the air is going 150 MPH. Doesnt matter though, the plane will still takeoff regardless.

i’m an idot after thinking 2 more seconds yes it would take off…

durr the whole reason it’s moving is thrust from the engines … the’re moving air over the wings and creating lift it’ll take off eventually … the wheels aren’t a contending facotr

ok im re-reading some of this thread and i think maybe it was poorly explained in the beginning.

someone please clear this up for me.

from the way this scenario was originally explained i am confused. was the intention of the treadmill to basically get the plane up to take off speed (ie 150mph at the wheels, while the aircraft itself is stationary?) and to see if the aircraft will take off?

or to talk about the aircrafts forward thrust from the engines being enough to overcome the force of the treadmill traveling in the opposite direction and eventually get going fast enough to where there is enough air passing under the wings to create lift?

is this hypothetical treadmill miles long, where the aircraft will have a lot of distance to be able to get up to speed to generate enough lift and eventually take off?

or is it a few hundread feet which is just long enough for the aircraft to be parked on, and have it accelerate and at the same time the treadmill is accelerating in the opposite direction with the required speed to keep the aircraft from forward motion?

i think i got confused by the wording of this situation

sooner or later this question makes it to just about every forum… grab the popcorn and enjoy lol

this should have been a public poll. AKA wall of shame.

Agreed.

Don’t you need a significant amount of air over the wings to allow an aircraft to take off, regardless of how much thrust there is? More than the air drawn in to a prop or a jet engine? If the prop or jet engine provided enough, there would be no need for a runway, just hit full throttle and take off. Why do we have long ass run-ways then? When I am in a plane, there is full throttle for a decent amount of time before the plane can take off.

EDIT - I just read Dex’s post and I agree. If the treadmill was the size of the wheelbase of the plane, I don’t see how there is enough air across the wings to let it take off because the plane is stationary…

you need to reach a significant airspeed over the wing. conveyor has no affect on this. the plane still moves through the air just as it normally would.

Rubicant, what we are saying is that the plane will move forward, regardless of the stupid treadmill. It will go forward and thus there will be air flowing over the wings. The treadmill doesnt do anything. ignore it.

Perhaps its the wording of the question, because it sounded like we were talking about a plane that was at full throttle remaining stationary from the POV of a person standing on the ground. Of course, that is not possible.

Again, wouldn’t that be achieved once the engines hit full throttle? You can’t move any more volume of air past full throttle so how come planes need such a long runway to take off. You can achieve maximum air velocity through an prop/jet engine once you are at full throttle.

then the question is stupid, or its just the way its being interpreted.

if the plane has thrust, but is kept in a fixed position it will not fly. if it is allowed to move forward, which i dont see in this scenario it will fly

this belt is matching its ground speed. this means no movement, and no air moving over the wing. atleast if its a jet. if it had a prop, the air moved by the prop would go over the wings… but unless you had a paper airplane its not going anywhere.

this is exactly the case. the question is retarded.

i think you are confused. the plane is not staionary to a viewer on nonmoving ground. it accelerates as normal.