Best Tech. Debate: Groundspeed vs. airspeed

[UndercoverPunk 5,000+ posts]

YEs, the plane's gonna fly... how fast the wheels are turning has NO effect on a plane's ability to fly. (I'm thinking of this as a jet, just so you have the same picture in your head... it's pink too... that's very important.)

Look, what hasn't been brought up (and I seriously doubt my ability to put my thoughts into words here...) is momentum. Once the engine kicks in, the wheels spinning don't mean dick to that plane getting off the ground, as long as they spin at all, that thing is flying. A plane is not powered by a driveshaft and an axle, you all are thinking CAR way too much. The plane is powered by that giant jet engine strapped to it's ***.

The engine kicks on and forces air/fire backward, this pushes the plane (NOT THE ****ING WHEELS, THE PLANE) to move foreward. then your little sensor that tells that tredmil "Oh shit the planes moving!" kicks in and the treadmil goes the same speed as the plan in the opposite direction.

Does the plane care?

NO!

The wheels are freewheeling BECAUSE THEY DON'T POWER A PLANE FOR TAKE OFF!

So what you end up with is a plane that takes off normal, except the wheels are going 2X as fast. (Combined speed from plane moving foreward and treadmil moving backward.)

For every action there is an equal and opposite reaction, that's all that matters.

I'M A ****ING GENIOUS! (If only I could spell)

Do I get a cookie or something??? I don't think you can appreciate howmuch mental effort it took me to type that out.

 

[Nikuk 5,000+ posts]

YEs, the plane's gonna fly... how fast the wheels are turning has NO effect on a plane's ability to fly. (I'm thinking of this as a jet, just so you have the same picture in your head... it's pink too... that's very important.)
Look, what hasn't been brought up (and I seriously doubt my ability to put my thoughts into words here...) is momentum. Once the engine kicks in, the wheels spinning don't mean dick to that plane getting off the ground, as long as they spin at all, that thing is flying. A plane is not powered by a driveshaft and an axle, you all are thinking CAR way too much. The plane is powered by that giant jet engine strapped to it's ***.

The engine kicks on and forces air/fire backward, this pushes the plane (NOT THE ****ING WHEELS, THE PLANE) to move foreward. then your little sensor that tells that tredmil "Oh shit the planes moving!" kicks in and the treadmil goes the same speed as the plan in the opposite direction.

Does the plane care?

NO!

The wheels are freewheeling BECAUSE THEY DON'T POWER A PLANE FOR TAKE OFF!

So what you end up with is a plane that takes off normal, except the wheels are going 2X as fast. (Combined speed from plane moving foreward and treadmil moving backward.)

For every action there is an equal and opposite reaction, that's all that matters.

I'M A ****ING GENIOUS! (If only I could spell)

Do I get a cookie or something??? I don't think you can appreciate howmuch mental effort it took me to type that out.

You get the e-kiss because You put all of the thoughts together //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

BTW - I know exactly how much mental effort it took, when I first read this it took me ~20 minutes to come up with an answer, and then a while more to figure out how to say it. lol

Yes, The plane flies.

Now check the poll and laugh at those who voted no.

Air MASS is different from Velocity.

Planes (wings) need AIRspeed, not GROUNDspeed.

 

[Nikuk 5,000+ posts]

can i change my vote, im an idiot

lol, [NO]

 

[UndercoverPunk 5,000+ posts]

You get the e-kiss because You put all of the thoughts together //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
BTW - I know exactly how much mental effort it took, when I first read this it took me ~20 minutes to come up with an answer, and then a while more to figure out how to say it. lol

Yes, The plane flies.

Now check the poll and laugh at those who voted no.

Air MASS is different from Velocity.

Planes (wings) need AIRspeed, not GROUNDspeed.

Thank you, that's all I wanted.

 

[Diplexers 10+ year member]

No...no it wouldn't.

 

[UndercoverPunk 5,000+ posts]

No...no it wouldn't.

... um... did you read my post and then nicks post following it?

 

[Diplexers 10+ year member]

yeah I did.

 

[UndercoverPunk 5,000+ posts]

yeah I did.

RIIIIIIIIIIGHT.......... .............. ..... that's all I have to say really.... have a good day?

 

[Nikuk 5,000+ posts]

:rofl:

 

[squeak9798 5,000+ posts]

I'm still debating about whether he was joking or serious.......

 

[ballstothewall 10+ year member]

Ok, I must be a f'ing idiot here. The way I figure it, the net air speed is going to be 0. And the plan needs air moving past the wings in order to create lift. With no air moving past the wings (the convayer belt is moving backwards at the same rate as the plan wants to move forwards, hence a net speed of zero), no lift in created, therefore no takeoff.

 

[Nikuk 5,000+ posts]

the plane moves fwd relative to the belt so there is airspeed

the wheels spin relative to the belt so there is no groundspeed

 

[ballstothewall 10+ year member]

Ahhh, ok. Thanks

 

[djman37 5,000+ posts]

For every action, there is an equal and opposite reaction. The force the prop applies to the plane creates the opposite reaction of the plane moving forward. The force the conveyor belt applies to the wheels creates the opposite reaction of them turning. The plane wouldn't move if the wheels were creating forward motion, which they aren't (ie treadmill, dyno). To keep a plane from moving, you'd need a windtunnel.

 

[Black_Jesus 10+ year member]

anyone who says it wont take off is a ****tard, pure and simple. go back to school