IPB

Welcome Guest ( Log In | Register )

31 Pages V  « < 2 3 4 5 6 > »   
Reply to this topicStart new topic
Venus Express
Rakhir
post Oct 17 2005, 08:25 PM
Post #46


Member
***

Group: Members
Posts: 346
Joined: 12-September 05
From: France
Member No.: 495



Fairing Installation

Today, Monday 17 October 2005, the payload fairing has been successfully installed on the nose block (composite of Fregat Upper Stage and Venus Express spacecraft). The first part of the activity was the tilting of the nose block from vertical to horizontal position. With both the spacecraft and the Upper Stage being fully fuelled the activity is classified as hazardous, and was hence conducted with the minimum number of personnel present in the clean room.

8 days...

The update including some images of the operation :
http://sci.esa.int/science-e/www/object/in...fobjectid=38153
Go to the top of the page
 
+Quote Post
RNeuhaus
post Oct 19 2005, 10:30 PM
Post #47


Senior Member
****

Group: Members
Posts: 1636
Joined: 9-May 05
From: Lima, Peru
Member No.: 385



New updates about Venus Express. More details about the magnetometer instrument.

http://www.spacedaily.com/news/venus-05g.html

Rodolfo
Go to the top of the page
 
+Quote Post
Rakhir
post Oct 21 2005, 11:03 AM
Post #48


Member
***

Group: Members
Posts: 346
Joined: 12-September 05
From: France
Member No.: 495



New ESA update : summary of the launch, cruise and arrival phases.

http://www.esa.int/esaCP/SEM0U7R01FE_index_0.html

Rakhir
Go to the top of the page
 
+Quote Post
Adam
post Oct 21 2005, 06:31 PM
Post #49


Junior Member
**

Group: Members
Posts: 61
Joined: 17-September 05
From: Sweden
Member No.: 499



Delayed:

http://www.esa.int/esaCP/SEM0CV3J2FE_index_0.html
Go to the top of the page
 
+Quote Post
Rakhir
post Oct 25 2005, 11:33 AM
Post #50


Member
***

Group: Members
Posts: 346
Joined: 12-September 05
From: France
Member No.: 495



Venus Express preliminary investigations bring encouraging news.

"On Monday 24 October the fairing was removed and engineers started the inspection to assess the status of the spacecraft.
The scenario is so far very encouraging, as only fairly large particles, pieces of the insulating material initially covering the launcherís Fregat upper stage, have been found on the body of the spacecraft.
The ESA Project team is confident that Venus Express will be launched well within the launch window, which closes on 24 November this year."

http://www.esa.int/esaCP/SEM2714J2FE_index_0.html

Rakhir
Go to the top of the page
 
+Quote Post
SigurRosFan
post Oct 26 2005, 01:27 PM
Post #51


Member
***

Group: Members
Posts: 530
Joined: 24-August 05
Member No.: 471



Spaceflightnow Mission Status Center: Venus Express

http://spaceflightnow.com/venusexpress/status.html

--- Although a new launch date has not been set, liftoff is expected to be targeted for sometime between November 6 and 9. ---


--------------------
- blue_scape / Nico -
Go to the top of the page
 
+Quote Post
Rakhir
post Oct 31 2005, 05:21 PM
Post #52


Member
***

Group: Members
Posts: 346
Joined: 12-September 05
From: France
Member No.: 495



Russian space officials Monday set a Nov. 9 blastoff.

http://www.space.com/missionlaunches/ap_05...usexp_updt.html

Rakhir
Go to the top of the page
 
+Quote Post
RNeuhaus
post Oct 31 2005, 09:23 PM
Post #53


Senior Member
****

Group: Members
Posts: 1636
Joined: 9-May 05
From: Lima, Peru
Member No.: 385



Strange news.

The postpone of the launch was due to contamination problem in the faring. Now, according to the news from space.com :

Russian space officials Monday set a Nov. 9 blastoff for a European probe to explore Venus after its earlier launch was postponed because of a booster rocket problem.

Is it of another story?

Rodolfo
Go to the top of the page
 
+Quote Post
Rakhir
post Oct 31 2005, 10:24 PM
Post #54


Member
***

Group: Members
Posts: 346
Joined: 12-September 05
From: France
Member No.: 495



QUOTE (RNeuhaus @ Oct 31 2005, 11:23 PM)
Strange news.

The postpone of the launch was due to contamination problem in the faring. Now, according to the news from space.com :

Russian space officials Monday set a Nov. 9 blastoff for a European probe to explore Venus after its earlier launch was postponed because of a booster rocket problem.

Is it of another story?

Rodolfo
*


By "booster rocket", they are talking about the launch vehicle. The fairing whose thermal insulation contaminated VE is part of the booster rocket.

Rakhir
Go to the top of the page
 
+Quote Post
Rakhir
post Nov 5 2005, 04:42 PM
Post #55


Member
***

Group: Members
Posts: 346
Joined: 12-September 05
From: France
Member No.: 495



Roll Out to Launch Pad

http://sci.esa.int/science-e/www/object/in...fobjectid=38214

Rakhir
Go to the top of the page
 
+Quote Post
Rakhir
post Nov 6 2005, 11:24 PM
Post #56


Member
***

Group: Members
Posts: 346
Joined: 12-September 05
From: France
Member No.: 495



Pre-launch sequence was executed.
2 days...

http://sci.esa.int/science-e/www/object/in...fobjectid=38218

Rakhir
Go to the top of the page
 
+Quote Post
Guest_paulanderson_*
post Nov 7 2005, 01:35 AM
Post #57





Guests






Interesting article:

'Venus Mission May Hold Surprises For Scientists And Public, Says CU Prof'
http://www.colorado.edu/news/releases/2005/421.html
Go to the top of the page
 
+Quote Post
mike
post Nov 7 2005, 03:04 AM
Post #58


Member
***

Group: Members
Posts: 350
Joined: 20-June 04
From: Portland, Oregon, U.S.A.
Member No.: 86



If Venus is almost exactly like Earth, but much hotter, and Mars is quite a lot like Earth, but much cooler, and Venus is closer to the sun than Earth, and Mars is further away from the sun than Earth, then hmm, what could it be I wonder... smile.gif

I'm looking forward to this mission myself..
Go to the top of the page
 
+Quote Post
JRehling
post Nov 7 2005, 03:41 PM
Post #59


Senior Member
****

Group: Members
Posts: 1572
Joined: 20-April 05
Member No.: 321



QUOTE (mike @ Nov 6 2005, 08:04 PM)
If Venus is almost exactly like Earth, but much hotter, and Mars is quite a lot like Earth, but much cooler, and Venus is closer to the sun than Earth, and Mars is further away from the sun than Earth, then hmm, what could it be I wonder...  smile.gif

I'm looking forward to this mission myself..
*


Mars is only about 11% the mass of the Earth, and the bulk composition is quite different, so the differences abound. Given that and other differences that began with formation, I'd say differences should be expected as the rule and similarities seen as more surprising.

Venus has similar mass and bulk composition, but the essential cause-of-it-all difference maker may be the slow rotation. Because of that, no magnetic field. Because of that, the upper atmosphere is pounded by solar wind. Because of that, H2O is broken up and lost. Because of that, CO2 fills the atmosphere AND lighter rock (granite) is not formed. Because of the CO2, the stifling heat. Because of the lack of granite and the heat, entirely different crustal cycling regimes.

It's unclear if that is really the chain of causality, and certainly more exploration is needed, but it would be stirring if such a small matter led to such a huge difference. And it would still be unclear why the rotation is so slow; there is a chicken-and-egg question about whether or not drag in the massive atmosphere may have controlled the rotation rate. The other external factor that may have contributed is the absence of a large satellite.
Go to the top of the page
 
+Quote Post
RNeuhaus
post Nov 7 2005, 03:54 PM
Post #60


Senior Member
****

Group: Members
Posts: 1636
Joined: 9-May 05
From: Lima, Peru
Member No.: 385



Besides, the other intrigating thing is that Venus sluggishly rotates on its axis once every 243 Earth days, while it orbits the Sun every 225 days - its day is longer than its year!

On the other hand, Venus rotates retrograde, or "backwards," spinning in the opposite direction of its orbit around the Sun. From its surface, the Sun would seem to rise in the west and set in the east.

The other odd thing is that its Equatorial Inclination to Orbit is 177.3 degrees. By comparison, it is: 7.56 x Earth. That is its north pole is almost pointing to the south pole.

These are at least one of the oddies things that I would like to understand:

Why does the day is longer than a year?
Why the planet rotates on backwards?

Rodolfo
Go to the top of the page
 
+Quote Post

31 Pages V  « < 2 3 4 5 6 > » 
Reply to this topicStart new topic

 



RSS Lo-Fi Version Time is now: 27th August 2014 - 09:00 PM
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 a project of the Planetary Society and is funded by donations from visitors and members. Help keep this forum up and running by contributing here.