Fuel question

How big would the fuel tank cylinders have to be
assume they would be strap-ons for the sake of the question
to move the shuttle from LEO to HEO.

If not the shuttle, then a lighter weight unmanned TUG controlled however
you want.

Just curious what it would take.



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On Feb 2, 12:49*am, "Graystar" wrote:
How big would the fuel tank cylinders have to be
assume they would be strap-ons for the sake of the question
to move the shuttle from LEO to HEO.


Not viable
The shuttle mission duration is only 10 days. It has limited attitude
control propellant

"Me" wrote in message
On Feb 2, 12:49 am, "Graystar" wrote:
How big would the fuel tank cylinders have to be
assume they would be strap-ons for the sake of the question
to move the shuttle from LEO to HEO.


Not viable
The shuttle mission duration is only 10 days. It has limited attitude
control propellant
_____________


OK, what about a remote controled TUG that didn't have the limitation on
attitude control
that could carry enough reaction fuel tanks sufficient
to decelerate a returning mission flight?



not considering the transfer method in this question



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"Graystar" wrote in message
.. .



OK, what about a remote controled TUG that didn't have the limitation on
attitude control
that could carry enough reaction fuel tanks sufficient
to decelerate a returning mission flight?



Been looked at. So far no one has really wanted to build it. Partly a
chicken/egg problem.

You need infrastructure in order to take advantage of a space tug, w/o a
space tug, no one will build the infrastructure.

The original STS program had plans for such a tug.



not considering the transfer method in this question

--
Greg Moore
Ask me about lily, an RPI based CMC.

Besides shuttle tires are only good for a month MAX in orbit......

"bob haller safety advocate" wrote in message

Besides shuttle tires are only good for a month MAX in orbit......

ROFL! What? Like tires on an Earth Tug? LOL!


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"Greg D. Moore (Strider)" wrote in message
"Graystar" wrote in message

OK, what about a remote controled TUG that didn't have the limitation on
attitude control
that could carry enough reaction fuel tanks sufficient
to decelerate a returning mission flight?



Been looked at. So far no one has really wanted to build it. Partly a
chicken/egg problem.

You need infrastructure in order to take advantage of a space tug, w/o a
space tug, no one will build the infrastructure.

The original STS program had plans for such a tug.
--
Greg Moore
Ask me about lily, an RPI based CMC.

Thanks. Yep I remember that and the whiffling conversations about it at the
time.
It seems then that they had enough on their plate building the Shuttle
then...
I'm not sold on the idea a "big" tug would be necessary now with the
tele-operations and such.
Essentially as a concept it's just a main motor with extended atttitude
control, big removeable reuseable fuel tanks,
and avionics with an R/C brain. Riverboat & bay tugs aren't much to look
at either,
but no one doubts they are useful and essential in many cases.

Anyway, thanks again. I gotta go build some radiation detectors and stuff
for now.

When I post again I'll... um... Endeavor... to have some questions with more
spacemeat on them... to throw on the barbie.
=]:-)
TTFN.
Graystar



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Graystar wrote:
How big would the fuel tank cylinders have to be
assume they would be strap-ons for the sake of the question
to move the shuttle from LEO to HEO.

If not the shuttle, then a lighter weight unmanned TUG controlled
however you want.

Just curious what it would take.

Roughly ET sized. Far more than what could be carried up on any LV,
past, present or projected.