Free Republic
Browse · Search
News/Activism
Topics · Post Article

To: robertpaulsen
Lateral speed at the surface of the Earth: 1000mph Lateral speed at 62,000 miles: 17,300mph

How do we go up and increase lateral speed without bending the cable into a big "C" shape?

A little basic physics. A point on the outside of a tire moves faster that a point toward the rim. The speed increases linearly with the radius distance from the point of rotation.

w=vr Angular (rotational velocity) is velocity time radius

You put the termination point at geostationary orbit where the speed needed to maintain orbit is equal to the rotation of the earth.

11 posted on 02/21/2005 5:57:58 AM PST by The_Victor (Calvin: "Do tigers wear pajamas?", Hobbes: "Truth is we never take them off.")
[ Post Reply | Private Reply | To 10 | View Replies ]


They could do it if they had an interociter.

13 posted on 02/21/2005 6:04:43 AM PST by RandallFlagg (Roll your own cigarettes! You'll save $$$ and smoke less!(Magnetic bumper stickers-click my name)
[ Post Reply | Private Reply | To 11 | View Replies ]

To: The_Victor
"The speed increases linearly with the radius distance from the point of rotation."

I agree. Obviously, it must.

My question is, what causes the speed to increase? Yes, as the elevator rises, angular speed increases, but the elevator is "rubbing" against one side of the cable on the way up.

Let me put it this way. Think of a space launch. We don't fire the rockets straight up. They'd just fall right back down.

At a certain altitude, the rocket pitches to pick up that angular speed.

18 posted on 02/21/2005 6:10:26 AM PST by robertpaulsen
[ Post Reply | Private Reply | To 11 | View Replies ]

To: The_Victor
"You put the termination point at geostationary orbit"

By definition, a geostationary orbit is at 21,000 miles over the equator, moving at 6550 mph.

So, I take back what I said before -- if you took the elevator to exactly this height and stepped out the door you'd stay in orbit.

But any lower, you'd fall to Earth. Any higher, you'd fly away.

23 posted on 02/21/2005 6:25:42 AM PST by robertpaulsen
[ Post Reply | Private Reply | To 11 | View Replies ]

Free Republic
Browse · Search
News/Activism
Topics · Post Article


FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson