Why airplanes taxi

On Feb 6, 9:24*am, Mxsmanic wrote:
writes:
Fixed-wing aircraft taxi because their wheels reduce friction as they
move forward on the ground.

So, logically, spacecraft in the frictionless environment of outer space
should immediately accelerate to the speed of light.

No, it still takes energy to accelerate a mass, even in a frictionless
environment. However, it would not take energy to maintain velocity in
a friction free environment. However, space (especially near space) is
not frictionless.

-Robert

Robert M. Gary writes:

On Feb 6, 9:24*am, Mxsmanic wrote:
writes:
Fixed-wing aircraft taxi because their wheels reduce friction as they
move forward on the ground.

So, logically, spacecraft in the frictionless environment of outer space
should immediately accelerate to the speed of light.

No, it still takes energy to accelerate a mass, even in a frictionless
environment.

But the original post said that aircraft taxi because their wheels reduce
friction. No mention of energy or force. So if the statement is true,
movement results from a lack of friction alone, so zero friction should
produce infinite speed (or lightspeed if one allows the speed of light as an
absolute upper limit).

However, space (especially near space) is not frictionless.

Nor does friction produce acceleration. QED.

On Feb 6, 12:02*pm, Mxsmanic wrote:
Robert M. Gary writes:
On Feb 6, 9:24*am, Mxsmanic wrote:
writes:
Fixed-wing aircraft taxi because their wheels reduce friction as they
move forward on the ground.

So, logically, spacecraft in the frictionless environment of outer space
should immediately accelerate to the speed of light.

No, it still takes energy to accelerate a mass, even in a frictionless
environment.

But the original post said that aircraft taxi because their wheels reduce
friction. *No mention of energy or force. *So if the statement is true,
movement results from a lack of friction alone, so zero friction should
produce infinite speed (or lightspeed if one allows the speed of light as an
absolute upper limit).

However, space (especially near space) is not frictionless.

Nor does friction produce acceleration. *QED.

Your post about airplanes flying stated that it was because of the
wings, no mention of energy or force, moron!

writes:

Your post about airplanes flying stated that it was because of the
wings, no mention of energy or force, moron!

What does that have to do with taxiing?

On Feb 6, 12:02 pm, Mxsmanic wrote:

But the original post said that aircraft taxi because their wheels reduce
friction. No mention of energy or force. So if the statement is true,
movement results from a lack of friction alone, so zero friction should
produce infinite speed (or lightspeed if one allows the speed of light as an
absolute upper limit).

However, space (especially near space) is not frictionless.

So, would having wheels reduce the friction in near space?

Dan

"Robert M. Gary" wrote in message
...
On Feb 6, 9:24 am, Mxsmanic wrote:
writes:
Fixed-wing aircraft taxi because their wheels reduce friction as they
move forward on the ground.

So, logically, spacecraft in the frictionless environment of outer space
should immediately accelerate to the speed of light.

No, it still takes energy to accelerate a mass, even in a frictionless
environment. However, it would not take energy to maintain velocity in
a friction free environment. However, space (especially near space) is
not frictionless.

-Robert



It seems this discussion is heating up...

On Feb 6, 6:53 pm, "Blueskies" wrote:

It seems this discussion is heating up...

Attributable to friction, of course

On Feb 6, 11:24*am, Mxsmanic wrote:
writes:
Fixed-wing aircraft taxi because their wheels reduce friction as they
move forward on the ground.

So, logically, spacecraft in the frictionless environment of outer space
should immediately accelerate to the speed of light.

http://en.wikipedia.org/wiki/Inertia
--
Gene Seibel
Gene & Sue's Flying Machine - http://pad39a.com/gene/
Because we fly, we envy no one.

Mxsmanic wrote in
:

writes:

Fixed-wing aircraft taxi because their wheels reduce friction as they
move forward on the ground.

So, logically, spacecraft in the frictionless environment of outer space
should immediately accelerate to the speed of light.


No, it takes a few minutes. Don't you watch star trek?

Bertie

On Feb 6, 1:20 pm, Bertie the Bunyip wrote:
Mxsmanic wrote :

writes:

Fixed-wing aircraft taxi because their wheels reduce friction as they
move forward on the ground.

So, logically, spacecraft in the frictionless environment of outer space
should immediately accelerate to the speed of light.

No, it takes a few minutes. Don't you watch star trek?

Bertie

It actually depends on the volume and pitch of the 'rrorrr-rrOORRR'
sound and angle at which Mr. Scott finds himself clinging to the fence
in front of the engines.

Smoke escaping out of various panels on the bridge seems to help as
well.

You sure this isn't a GM product we're talking about here?