Help (engineering, general science, etc)!

> > In a message dated 12/17/2001 8:33:30 PM Pacific Standard Time,
> > jdr7181@... writes:
> >
> > But getting to (and from) GEO is very expensive, and is about the
> worst place
> > possible to put a station for microgravity research.
>
> Why is that? Just because of the added delta-V?
>

Yes.

Hmm, this is pretty basic stuff, you should already know
that if you are serious about starting a commercial
space business.

> > IIRC getting to GEO from Terra takes more delta-vee than landing on
> the
> > surface of Luna.
> >
> > Very expensive.
>
> What is IIRC?
>

"If I Remember Correctly".
Pretty common acronym, I guess you are new to internet.
I have been on the net since 1992, that makes
me a grandpa I suppose.

>
> The time lag is important because the facility would begin it's life
> as an "unmanned" lab, and some teleoperation would be necessary (for
> servicing, upgrades, etc.).
>

It better not be important.

In LEO you will not have continuous tracking coverage
so most of the time the robots will be operating alone,
they will have be be significantly autonomous. The
time delay will be the least of your problems.

In GEO you get much better coverage, but you have the time delay.

There is no getting around that I am afraid, as the TV reporters in Afghanistan have found out :-)

>
> Indeed. Could you provide me with additional information. Suggested
> URLs? Books, articles, etc? Why is GEO so cost prohibitive?
>

It is pretty elementary stuff.

Do you know how to google ?

I did a google search on "GEO GTO LEO payload"

and came up with a few hundred relevant links:

http://www.tc.cornell.edu/Research/CMI/RLVsource/rockets.html

http://users.commkey.net/Braeunig/space/specs/proton.htm

http://users.commkey.net/Braeunig/space/specs/nasda.htm

http://www.rmc.ca/other/advs/MOD6.html

http://www.af.mil/lib/misc/barfinal2.ppt

http://www.faqs.org/faqs/space/launchers/

http://members.aol.com/SLVehicles8/United_States_3/Atlas_V/Text/Text.htm

http://bass.gmu.edu/~lribeiro/Spring01/Lectures/TCOM507_L3.PDF

For any given rocket based launch vehicle/system it is about 5 to 10 times more expensive to go to GEO than to LEO, depending on things like launch site,
vehicle dry weight etc.

Hope this helps,

Charles R.