|
Posted by Jose Pina Coelho on August 28, 2005, 3:35 pm
Please log in for more thread options
show/hide quoted text
> It is only fair since the shuttle puts a "drag" on ISS while attached.
I find it hard to beleive that the shuttle has more drag than the ISS
(unless the docking positions is belly forward).
--
Doing AIX support was the most monty-pythonesque
activity available at the time.
Eagerly awaiting my thin chocolat mint.
|
|
Posted by Herb Schaltegger on August 28, 2005, 12:16 pm
Please log in for more thread options
On Sun, 28 Aug 2005 10:35:31 -0500, Jose Pina Coelho wrote
show/hide quoted text
>
>> It is only fair since the shuttle puts a "drag" on ISS while attached.
>
> I find it hard to beleive that the shuttle has more drag than the ISS
> (unless the docking positions is belly forward).
>
>
>
That's not what Lynndel said. He said it adds drag, not that is has
MORE drag than the station.
--
"Fame may be fleeting but obscurity is forever." ~Anonymous
"I believe as little as possible and know as much as I can."
~Todd Stuart Phillips
show/hide quoted text
<www.angryherb.net>
|
|
Posted by Jorge R. Frank on September 2, 2005, 5:12 pm
Please log in for more thread options
show/hide quoted text
> On Sun, 28 Aug 2005 10:35:31 -0500, Jose Pina Coelho wrote
>
>>
>>> It is only fair since the shuttle puts a "drag" on ISS while attached.
>>
>> I find it hard to beleive that the shuttle has more drag than the ISS
>> (unless the docking positions is belly forward).
>
> That's not what Lynndel said. He said it adds drag, not that is has
> MORE drag than the station.
And even that was wrong. The station had a ballistic number of 156.80 kg/m^
2 before the shuttle docked, and 163.31 kg/m^2 while it was docked. Lower
ballistic number means more "fluffy" hence more drag, so the shuttle
actually *reduced* the drag deceleration on the station while it was
docked.
--
JRF
Reply-to address spam-proofed - to reply by E-mail,
check "Organization" (I am not assimilated) and
think one step ahead of IBM.
|
|
Posted by Ian Stirling on August 20, 2005, 5:04 pm
Please log in for more thread options show/hide quoted text
> Space station gets free boost from shuttle
show/hide quoted text
<snip>
I should have asked this at the time.
When I was watching NASA-TV, I noted that the russians were unhappy
if the shuttle pushed the station more than 1m/s or so, WRT the next
progress.
Why is this?
Is there that little margin in the progress engines?
|
|
Posted by John Doe on August 20, 2005, 4:34 pm
Please log in for more thread options Ian Stirling wrote:
show/hide quoted text
> When I was watching NASA-TV, I noted that the russians were unhappy
> if the shuttle pushed the station more than 1m/s or so, WRT the next
> progress.
> Why is this?
> Is there that little margin in the progress engines?
Progress has to carry as much cargo as it can. The higher the station,
the less cargo it can carry because they have to load more fuel. And
with shuttle gone for the foreseable future, Progress has to be loaded
to the brim with cargo. The next progress is in september so station
will still be "high" because the reboost was weeks late due to Discovery
launching late.
One can argue however that if progress has to spend more fuel to get to
the higher station, it will be spending less fuel to reboost the station
since the station will stayup a bit higher, so having less fuel when it
docks may not make that big a difference.
My guess is that it simply reduces margins, and they probably prefer to
have progress docked with more fuel for emergency manoeuvers to avoid
objects etc.
|
| Similar Threads | Posted | | free ecm2001 titanium crack torrent rapidshare download free efSJ@o@Tx? | January 17, 2010, 10:03 pm |
| French graphic shows free-flying shuttle placing new arrays at end of truss | August 29, 2006, 7:39 am |
| Florida Space Magazine May 09 Issue - Read it online FREE | May 5, 2009, 8:25 pm |
| Re: will our space shuttle discovery and our international space station be safe from the space trash that the US and other counries earlier left up there? | September 3, 2009, 8:01 am |
| ISS gained small re-boost from Russian EVA venting | June 2, 2007, 2:15 pm |
| Awesome Shuttle Discovery / Space-Station / Space-Walk background desktop image for download | August 9, 2005, 10:25 am |
| Space shuttle carrying ND experiments to space station | March 18, 2008, 9:41 am |
| shuttle spots UFOs strafing the space station | June 19, 2007, 6:10 pm |
| NASA: Space Station "moves away" from shuttle after undocking | August 31, 2007, 4:28 pm |
| Space Shuttle Discovery is scheduled to dock with the Station on July 28 | July 23, 2005, 2:15 am |
|
XML Sitemap