Hubble Servicing Mission 4 cancelled?

(dave schneider) wrote in message m...
Herb Schaltegger lid.retro.com
wrote:
Richard Schumacher wrote:

[...]
But hey, if you're squeamish, launch all the service hardware on an
unmanned
Shuttle and send up the service crew later in a couple of Soyuzes. After,
send the Shuttle on a destructive re-entry.

Of course, Soyuz probably can't reach HST's operating altitude and orbital
inclination from Baikonur.

Move HST to ISS.
Service HST.

Can the HST function in ISS's orbit?
How much effort would it be to move HST?

"Thomas Cuny" wrote in message
om...

Move HST to ISS.
Service HST.

Can the HST function in ISS's orbit?
How much effort would it be to move HST?

Essentially, you'd have to land HST and then
launch it again into ISS orbit. And the only
vehicle capable of that is the Shuttle. (I'm not
even sure if the Shuttle could reach the ISS
orbit with the HST payload.)

It takes a lot of fuel to change your inclination
while in orbit

Bruce

"Thomas Cuny" wrote in message
om...
(dave schneider) wrote in message
m...
Herb Schaltegger
lid.retro.com
wrote:
Richard Schumacher wrote:

[...]
But hey, if you're squeamish, launch all the service hardware on an
unmanned
Shuttle and send up the service crew later in a couple of Soyuzes.
After,
send the Shuttle on a destructive re-entry.

Of course, Soyuz probably can't reach HST's operating altitude and
orbital
inclination from Baikonur.

Move HST to ISS.

Can't be done.


Service HST.

Can the HST function in ISS's orbit?
How much effort would it be to move HST?

Far too much.

It would be easier in some ways to de-orbit the thing in a shuttle and
relaunch it to ISS. (in terms of fuel required.)

On 22 Jan 2004 21:07:28 -0800, (Thomas Cuny) wrote:

Can the HST function in ISS's orbit?
How much effort would it be to move HST?

The head of NASA was asked about that at this afternoon's press conference.
Basically, he said it would be difficult and the HST might die before they could
arrange it anyway.

The head of NASA was asked about that at this afternoon's press conference.
Basically, he said it would be difficult and the HST might die before they could
arrange it anyway.

What about using electrical powered engines ? After all time in on our
side in case...

http://tinyurl.com/3drsh

AlexT

In article ,
(Alex T) wrote:

The head of NASA was asked about that at this afternoon's press conference.
Basically, he said it would be difficult and the HST might die before they
could
arrange it anyway.

What about using electrical powered engines ? After all time in on our
side in case...

http://tinyurl.com/3drsh

You still have to design the new mover, docking gear, etc etc etc.

It's probably going to cost as much as a shuttle mission. All of which
doesn't address scheduling issues (how sure are we that it could be done
in time).

"Jim Shaffer, Jr." wrote:

The head of NASA was asked about that at this afternoon's press
conference. Basically, he said it would be difficult and the HST might
die before they could arrange it anyway.

And just after Opportunity landed, Weiler, Theisinger and Elachi give
O'Keefe a sign:

http://spaceflightnow.com/mars/mera/...5officials.jpg

;-)

You still have to design the new mover, docking gear, etc etc etc.

agreed...

but I was under the impression that those issues should be also solved
for the "desorbit booster"... assuming one will be indeed built (I
personally doubt it).

I don't know how confident NASA is with it's ionic propulsion (seems
that the latest test probes were quite successful) but I don't see any
reason not to consider it... and actually decide which way to apply
the delta V at a later stage !

AlexT