IPB

Welcome Guest ( Log In | Register )

45 Pages V  « < 41 42 43 44 45 >  
Closed TopicStart new topic
Phobos-Grunt
SFJCody
post Dec 12 2011, 06:01 AM
Post #631


Member
***

Group: Members
Posts: 813
Joined: 8-February 04
From: Arabia Terra
Member No.: 12



I think the re-soldering info was sourced from Anatoly Zak's page.

http://www.russianspaceweb.com/phobos_grunt_2011.html
Go to the top of the page
 
+Quote Post
mchan
post Dec 13 2011, 02:56 AM
Post #632


Member
***

Group: Members
Posts: 599
Joined: 26-August 05
Member No.: 476



QUOTE (ElkGroveDan @ Dec 11 2011, 09:29 PM) *
Here's one of the technicians taking a break during the procedure.


Mmm, kegs of ALE (Jet Fuel vintage 2006). Just what we need for the UMSF drinking game!
Go to the top of the page
 
+Quote Post
elakdawalla
post Dec 13 2011, 07:48 AM
Post #633


Administrator
****

Group: Admin
Posts: 5172
Joined: 4-August 05
From: Pasadena, CA, USA, Earth
Member No.: 454



QUOTE (SFJCody @ Dec 11 2011, 10:01 PM) *
I think the re-soldering info was sourced from Anatoly Zak's page.

Yeah, kind of a shocking amount of "news" in English language media is sourced from that page. Zak is pretty good but he's not a primary source, so I'd take anything sourced from his page with a grain of salt, because his news is only as good as his sources.

I had an interesting email exchange with a couple of writers for RIA Novosti's Science pages. They told me that most of their "unnamed sources" are actually people from within Lavochkin or Roskosmos who just won't speak on the record. Which is good as far as that goes, but people who are not speaking on the record are also less obligated to be completely truthful or to tell the whole story, so while I'm slighly reassured, I'm still leery of those "unnamed sources." As for official sources, well, it's Russia, so there's a nonzero chance that officials are, if not lying, at least glossing over certain facts or not telling the whole story. Given all these uncertainties I still try to stick as much as possible to reporting on the official story, if only because that'll make it easier to discover eventually if there is a contradiction that makes it clear that there was something fishy about some part of the official story.


--------------------
My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
Go to the top of the page
 
+Quote Post
PDP8E
post Dec 14 2011, 03:51 AM
Post #634


Member
***

Group: Members
Posts: 807
Joined: 10-October 06
From: Maynard Mass USA
Member No.: 1241



Here is a recent article (dated today 12/12/2011) on "universe today" about FG

http://www.universetoday.com/91766/russian...grunt-re-entry/

It was submitted by David Warmflash, M.D., an astrobiologist and science lead for the U.S. team of the Planetary Society's Phobos Living Interplanetary Flight Experiment.


--------------------
CLA CLL
Go to the top of the page
 
+Quote Post
Daba
post Dec 17 2011, 06:49 PM
Post #635


Newbie
*

Group: Members
Posts: 19
Joined: 17-April 05
From: Zagreb, Croatia
Member No.: 240



According to Simone Corbellini, who calculated this from flare observations, FG maintains Sun orientation on the longitudinal axis. He added the prediction calculation to his website.

http://www.satflare.com/track.php?q=phobos#LIST
Go to the top of the page
 
+Quote Post
Daba
post Jan 5 2012, 07:58 AM
Post #636


Newbie
*

Group: Members
Posts: 19
Joined: 17-April 05
From: Zagreb, Croatia
Member No.: 240



Another stunning video from Thierry Legault!

http://legault.perso.sfr.fr/phobos-grunt.html
Go to the top of the page
 
+Quote Post
dilo
post Jan 5 2012, 09:24 AM
Post #637


Senior Member
****

Group: Members
Posts: 2492
Joined: 15-January 05
From: center Italy
Member No.: 150



I see some similarities...
Attached thumbnail(s)
Attached Image
 


--------------------
I always think before posting! - Marco -
Go to the top of the page
 
+Quote Post
tedstryk
post Jan 5 2012, 02:25 PM
Post #638


Interplanetary Dumpster Diver
****

Group: Admin
Posts: 4404
Joined: 17-February 04
From: Powell, TN
Member No.: 33



Seriously, Dilo? The chap in the picture on the left clearly isn't wearing sunglasses.


--------------------
Go to the top of the page
 
+Quote Post
dilo
post Jan 5 2012, 02:42 PM
Post #639


Senior Member
****

Group: Members
Posts: 2492
Joined: 15-January 05
From: center Italy
Member No.: 150



Well, glasses are clearly reflecting the Earth glow! wink.gif


--------------------
I always think before posting! - Marco -
Go to the top of the page
 
+Quote Post
hendric
post Jan 5 2012, 05:26 PM
Post #640


Director of Galilean Photography
***

Group: Members
Posts: 896
Joined: 15-July 04
From: Austin, TX
Member No.: 93



Looks like it is still maintaining orientation. Really wish they could have saved it.


--------------------
Space Enthusiast Richard Hendricks
--
"The engineers, as usual, made a tremendous fuss. Again as usual, they did the job in half the time they had dismissed as being absolutely impossible." --Rescue Party, Arthur C Clarke
Mother Nature is the final inspector of all quality.
Go to the top of the page
 
+Quote Post
dilo
post Jan 5 2012, 10:04 PM
Post #641


Senior Member
****

Group: Members
Posts: 2492
Joined: 15-January 05
From: center Italy
Member No.: 150



Just discovered that Roscosmos gives daily orbital values:
http://www.roscosmos.ru/main.php?id=375
I made plots from these data:
Attached Image

Note that perigee distance is noticeably higher compared to Corbellini's last plot (192km vs 227km):
http://www.satflare.com/track.php?q=phobos#MAP


--------------------
I always think before posting! - Marco -
Go to the top of the page
 
+Quote Post
Jaheira
post Jan 6 2012, 06:12 PM
Post #642


Newbie
*

Group: Members
Posts: 5
Joined: 6-July 11
Member No.: 6050



QUOTE (hendric @ Jan 5 2012, 05:26 PM) *
Looks like it is still maintaining orientation. Really wish they could have saved it.

I hope the Russians actually learn some lessons from all of this. Most importantly, to include an onmidirectional low gain antenna on all deep space missions that CANNOT be obscured whatever the circumstances.
Go to the top of the page
 
+Quote Post
Greg Hullender
post Jan 6 2012, 09:21 PM
Post #643


Senior Member
****

Group: Members
Posts: 1018
Joined: 29-November 05
From: Seattle, WA, USA
Member No.: 590



I can't think of an easy way to estimate the reentry date. However, we know the resistance will climb exponentially as the altitude decreases, and, based on the slope change at the end of that altitude curve, it won't be long. has anyone made a prediction?

--Greg
Go to the top of the page
 
+Quote Post
hendric
post Jan 6 2012, 09:34 PM
Post #644


Director of Galilean Photography
***

Group: Members
Posts: 896
Joined: 15-July 04
From: Austin, TX
Member No.: 93



QUOTE (Jaheira @ Jan 6 2012, 12:12 PM) *
I hope the Russians actually learn some lessons from all of this. Most importantly, to include an onmidirectional low gain antenna on all deep space missions that CANNOT be obscured whatever the circumstances.

Well, as Doug has said repeatedly, it's all about tradeoffs. How many potentially small-chance events do you design against before you are providing less benefit than it's worth is always going to be a judgement call.

On the other hand, comms is pretty critical to making sure you *understand* that last failure. (re: Beagle/MPL/DS2/etc)


--------------------
Space Enthusiast Richard Hendricks
--
"The engineers, as usual, made a tremendous fuss. Again as usual, they did the job in half the time they had dismissed as being absolutely impossible." --Rescue Party, Arthur C Clarke
Mother Nature is the final inspector of all quality.
Go to the top of the page
 
+Quote Post
jamescanvin
post Jan 9 2012, 09:06 AM
Post #645


Senior Member
****

Group: Moderator
Posts: 2262
Joined: 9-February 04
From: Melbourne - Oz
Member No.: 16



QUOTE (Greg Hullender @ Jan 6 2012, 09:21 PM) *
I can't think of an easy way to estimate the reentry date. However, we know the resistance will climb exponentially as the altitude decreases, and, based on the slope change at the end of that altitude curve, it won't be long. has anyone made a prediction?


Follow @PhG_Reentry

Currently 16th Jan 07:15 UTC +/- 36 hours


--------------------
Twitter
Please support unmannedspaceflight.com by donating here
Go to the top of the page
 
+Quote Post

45 Pages V  « < 41 42 43 44 45 >
Closed TopicStart new topic

 



RSS Lo-Fi Version Time is now: 30th March 2024 - 04:48 AM
RULES AND GUIDELINES
Please read the Forum Rules and Guidelines before posting.

IMAGE COPYRIGHT
Images posted on UnmannedSpaceflight.com may be copyrighted. Do not reproduce without permission. Read here for further information on space images and copyright.

OPINIONS AND MODERATION
Opinions expressed on UnmannedSpaceflight.com are those of the individual posters and do not necessarily reflect the opinions of UnmannedSpaceflight.com or The Planetary Society. The all-volunteer UnmannedSpaceflight.com moderation team is wholly independent of The Planetary Society. The Planetary Society has no influence over decisions made by the UnmannedSpaceflight.com moderators.
SUPPORT THE FORUM
Unmannedspaceflight.com is funded by the Planetary Society. Please consider supporting our work and many other projects by donating to the Society or becoming a member.