Author Topic: ISRO Mars Orbiter Mission - Nov 2013 launch to September 2014 arrival - UPDATES  (Read 437725 times)

Offline Star One

  • Senior Member
  • *****
  • Posts: 8018
  • UK
  • Liked: 1281
  • Likes Given: 168
Reminder: MOM trans-Mars injection maneuver starts to-day November 30 at 1919UTC for a duration of 23 minutes

I guess there is a very precise point in the orbit that the burn has to occur at & if they miss that can they just attempt it at the same point on the next orbit round, or is it not that straightforward?
« Last Edit: 11/30/2013 10:24 AM by Star One »

Offline ss1_3

  • Full Member
  • *
  • Posts: 157
  • Liked: 31
  • Likes Given: 10
They can attempt another burn at next orbit but not without penalty on fuel.

Online Chris Bergin

Reminder: MOM trans-Mars injection maneuver starts to-day November 30 at 1919UTC for a duration of 23 minutes

Will there be a webcast of this milestone, or just updates?

Offline chota

  • Full Member
  • *
  • Posts: 143
  • Liked: 43
  • Likes Given: 10
Mostly updates from https://www.facebook.com/isromom

Here are some more details on what happens

http://www.thehindu.com/sci-tech/science/mars-orbiter-poised-for-final-toss-off-earth-on-sunday/article5407608.ece

Quote
upload the commands of sequence in a time-tagged manner based on various parameters

Quote
slightest deviation in time, duration of firing or the speed to be given to the spacecraft would be immediately red-flagged so that the controllers could set the contingencies in motion

Quote
The engine burn to push the satellite out will start when it is over HBK (Hartebeesthoek) 60 km north of Johannesburg in South Africa, and end somewhere over Bangalore

Quote
The engine burn was aimed at giving the satellite a final escape velocity (which should be a minimum of 10.7 km per second). At launch, it got the speed of 9.8 km per second. The six orbit raises added 0.873 km per second; the December 1 burn should give it the last push of 0.648 km a second which all add up to the crucial velocity of about 11.4 km per second
« Last Edit: 11/30/2013 01:42 PM by chota »


Offline vyoma

  • Full Member
  • ****
  • Posts: 1005
  • India
  • Liked: 223
  • Likes Given: 101
Update from ISRO MOM Facebook page:
Quote
T - 01:00:00
On-board Computer takes over the operations.
« Last Edit: 11/30/2013 05:29 PM by vyoma »

Online plutogno

  • Full Member
  • ****
  • Posts: 717
  • Toulouse, France and Milan, Italy
  • Liked: 113
  • Likes Given: 6
Quote
Forward rotation of the spacecraft, to put it into the right orientation to fire, has commenced.

Offline AJA

  • Full Member
  • ****
  • Posts: 855
  • Per Aspera Ad Ares, Per Aspera Ad Astra
  • India
  • Liked: 135
  • Likes Given: 202
Forward rotation of the spacecraft, to put it into the right orientation to fire, has commenced. - 00:19 IST

Update: Forward rotation completed. (00:28 IST)


(PS - times are times of FB posts)

Btw, I've managed to commandeer a windows laptop to run Eyes. Got a couple of screenshots from NASA Eyes (where I'm watching this thing live.) I doubt real-time tracking will occur (and be reflected in the suite), but the trajectory shown should be accurate right up until TMI TIG.
« Last Edit: 11/30/2013 06:02 PM by AJA »

Offline AJA

  • Full Member
  • ****
  • Posts: 855
  • Per Aspera Ad Ares, Per Aspera Ad Astra
  • India
  • Liked: 135
  • Likes Given: 202
Wow, just passed over the terminator, and it's just struck me that the burn is happening during local night. Spacecraft running purely off battery power. #NowJittery.

Online Chris Bergin

Eight minutes to the burn if the timings are as noted above.

Offline Maciej Olesinski

  • Full Member
  • *
  • Posts: 135
  • Liked: 31
  • Likes Given: 14
Thanks for Twitter update! I am very interested in their mission but somehow it is hard for me to belive that they will succed

Offline AJA

  • Full Member
  • ****
  • Posts: 855
  • Per Aspera Ad Ares, Per Aspera Ad Astra
  • India
  • Liked: 135
  • Likes Given: 202
a TIG-3 min, Orbiter ready to fire the LAM.

Offline input~2

  • Moderator
  • Global Moderator
  • Senior Member
  • *****
  • Posts: 5190
  • Liked: 340
  • Likes Given: 154

Online plutogno

  • Full Member
  • ****
  • Posts: 717
  • Toulouse, France and Milan, Italy
  • Liked: 113
  • Likes Given: 6
Quote
The 440 N Liquid Engine has commenced its 23 minute long firing for Tran-Mars Injection.

This will impart an incremental velocity of 648 m/s consuming 198 kg of fuel.

Offline AJA

  • Full Member
  • ****
  • Posts: 855
  • Per Aspera Ad Ares, Per Aspera Ad Astra
  • India
  • Liked: 135
  • Likes Given: 202
Eyes is now just going along the old-pre burn trajectory. So that's that, until the DSN gets new trajectory.

Offline ss1_3

  • Full Member
  • *
  • Posts: 157
  • Liked: 31
  • Likes Given: 10
23 minutes of terror!!!

Offline AJA

  • Full Member
  • ****
  • Posts: 855
  • Per Aspera Ad Ares, Per Aspera Ad Astra
  • India
  • Liked: 135
  • Likes Given: 202
uhh.. they just deleted the post confirming ignition. The heck?


EDIT: It's back, and shows the original time of posting. Thanks for that Zuckerberg. :-/
« Last Edit: 11/30/2013 06:27 PM by AJA »

Offline vyoma

  • Full Member
  • ****
  • Posts: 1005
  • India
  • Liked: 223
  • Likes Given: 101
Where did that post, about LAM, go?!


Offline vyoma

  • Full Member
  • ****
  • Posts: 1005
  • India
  • Liked: 223
  • Likes Given: 101
Phew, that post came back up. Timestamp's still "6 minutes ago". May be a glitch in Facebook, or it was serving some old cached page :)
« Last Edit: 11/30/2013 06:32 PM by vyoma »

Tags: