IPB

Welcome Guest ( Log In | Register )

Mro On Approach, TCM-3 not required
Redstone
post Feb 3 2006, 11:06 PM
Post #1


Member
***

Group: Members
Posts: 134
Joined: 13-March 05
Member No.: 191
MRO has shifted from the cruise phase to Approach phase. Apparently, the trajectory is so good that TCM-3 was cancelled. This is good news for the prospects for a long life for MRO supporting future missions. TCM-4 is on Feb 28, and MOI on March 10. Only 5 weeks away! smile.gif
Go to the top of the page
 
+Quote Post
 
 Start new topic
Replies
djellison
post Feb 17 2006, 09:59 PM
Post #2


Founder
****

Group: Chairman
Posts: 14448
Joined: 8-February 04
Member No.: 1
Being VERY unscientific, approx speed at periareion using Orbiter with these apareion's....

10000km - 4330 m/sec
18000km - 4460 m/sec
28000km - 4590 m/sec
38000km - 4650 m/sec
45000km - 4670 m/sec

So to vary between 28000 and 45000 is only a 80ish m/sec difference, in an MOI burn of I believe roughly 1000 m/sec over 25 minutes - so +/- 40m/sec is about a 4% error, or 1 minute of the burn

200 x 400km orbit is approx 3520 - 3320 m/sec ish -so aerobraking is giving us another 1000 m/sec of delta V.

All figures very VERY roughly done in orbiter.

Doug
Go to the top of the page
 
+Quote Post
Bob Shaw
post Feb 17 2006, 10:46 PM
Post #3


Senior Member
****

Group: Members
Posts: 2488
Joined: 17-April 05
From: Glasgow, Scotland, UK
Member No.: 239
The way I see it, almost *any* orbit is better than an unplanned landing mission. And I was, originally, really trying *not* to be cruel about the MCO trajectory, honest! I didn't *need* to be cruel, not with you lot aboard...

Bob Shaw


--------------------
Remember: Time Flies like the wind - but Fruit Flies like bananas!
Go to the top of the page
 
+Quote Post
Guest_AlexBlackwell_*
post Feb 17 2006, 10:52 PM
Post #4





Guests
QUOTE (Bob Shaw @ Feb 17 2006, 10:46 PM) *
I didn't *need* to be cruel, not with you lot aboard...

Hey, you forgot to include the appropriate emoticon. Or did you forget? blink.gif
Go to the top of the page
 
+Quote Post

Posts in this topic
- Redstone   Mro On Approach   Feb 3 2006, 11:06 PM
- - RNeuhaus   Good news. I seems that MRO has started to gain it...   Feb 4 2006, 04:41 AM
|- - ugordan   QUOTE (RNeuhaus @ Feb 4 2006, 05:41 AM)I seem...   Feb 4 2006, 12:13 PM
|- - jmknapp   QUOTE (ugordan @ Feb 4 2006, 07:13 AM) As...   Feb 15 2006, 01:19 PM
|- - jmknapp   PS: Does anyone know what the field-of-view and re...   Feb 15 2006, 02:28 PM
- - abalone   QUOTE (Redstone @ Feb 4 2006, 10:06 AM)MRO ha...   Feb 4 2006, 12:49 PM
- - djellison   It's odd to think that from 'aboe' - M...   Feb 4 2006, 03:19 PM
|- - SFJCody   How many pixels would HiRise get across the disc o...   Feb 4 2006, 03:50 PM
|- - mcaplinger   QUOTE (SFJCody @ Feb 4 2006, 07:50 AM)How man...   Feb 4 2006, 05:26 PM
- - djellison   This is from a little PDF I found at the same plac...   Feb 4 2006, 05:41 PM
|- - crabbsaline   QUOTE (djellison @ Feb 4 2006, 12:41 PM)This ...   Feb 7 2006, 11:11 AM
- - djellison   I think they're using the ONC more as a tech-d...   Feb 7 2006, 11:57 AM
- - djellison   http://bookstore.spie.org/index.cfm?fuseac...d=619...   Feb 15 2006, 02:35 PM
|- - jmknapp   QUOTE (djellison @ Feb 15 2006, 09:35 AM)...   Feb 15 2006, 03:52 PM
|- - Bob Shaw   From the MRO website: http://mars.jpl.nasa.gov/mr...   Feb 15 2006, 07:29 PM
|- - jmknapp   I made an animation of the approach through the fi...   Feb 16 2006, 03:35 PM
- - djellison   Given the addition of some post-moi-pre-aerobrakin...   Feb 16 2006, 03:46 PM
|- - jmknapp   QUOTE (djellison @ Feb 16 2006, 10:46 AM)...   Feb 16 2006, 05:00 PM
|- - mcaplinger   QUOTE (jmknapp @ Feb 16 2006, 09:00 AM) L...   Feb 16 2006, 05:34 PM
|- - jmknapp   QUOTE (mcaplinger @ Feb 16 2006, 12:34 PM...   Feb 16 2006, 06:03 PM
|- - helvick   QUOTE (jmknapp @ Feb 16 2006, 06:03 PM) W...   Feb 16 2006, 06:30 PM
|- - mcaplinger   QUOTE (jmknapp @ Feb 16 2006, 10:03 AM) W...   Feb 16 2006, 10:14 PM
|- - jmknapp   QUOTE (mcaplinger @ Feb 16 2006, 05:14 PM...   Feb 16 2006, 10:42 PM
|- - mcaplinger   QUOTE (jmknapp @ Feb 16 2006, 02:42 PM) I...   Feb 16 2006, 11:31 PM
|- - jmknapp   QUOTE (mcaplinger @ Feb 16 2006, 06:31 PM...   Feb 17 2006, 02:00 AM
|- - mcaplinger   QUOTE (jmknapp @ Feb 16 2006, 06:00 PM) H...   Feb 17 2006, 04:05 AM
|- - Bob Shaw   QUOTE (mcaplinger @ Feb 17 2006, 04:05 AM...   Feb 17 2006, 12:18 PM
|- - AlexBlackwell   QUOTE (Bob Shaw @ Feb 17 2006, 12:18 PM) ...   Feb 17 2006, 06:13 PM
|- - jmknapp   QUOTE (AlexBlackwell @ Feb 17 2006, 01:13...   Feb 17 2006, 06:28 PM
||- - AlexBlackwell   QUOTE (jmknapp @ Feb 17 2006, 06:28 PM) B...   Feb 17 2006, 06:34 PM
||- - elakdawalla   QUOTE (AlexBlackwell @ Feb 17 2006, 10:34...   Feb 17 2006, 06:36 PM
||- - AlexBlackwell   QUOTE (elakdawalla @ Feb 17 2006, 06:36 P...   Feb 17 2006, 06:50 PM
|- - mcaplinger   QUOTE (AlexBlackwell @ Feb 17 2006, 10:13...   Feb 17 2006, 07:50 PM
|- - AlexBlackwell   QUOTE (mcaplinger @ Feb 17 2006, 07:50 PM...   Feb 17 2006, 08:06 PM
||- - djellison   QUOTE (AlexBlackwell @ Feb 17 2006, 08:06...   Feb 17 2006, 08:09 PM
||- - RNeuhaus   QUOTE (AlexBlackwell @ Feb 17 2006, 03:06...   Feb 17 2006, 10:55 PM
|- - jmknapp   QUOTE (mcaplinger @ Feb 17 2006, 02:50 PM...   Feb 17 2006, 09:39 PM
|- - ElkGroveDan   QUOTE (jmknapp @ Feb 17 2006, 09:39 PM) F...   Feb 17 2006, 11:06 PM
- - Sunspot   I kept reading that they wouldn't be doing any...   Feb 16 2006, 05:15 PM
- - Phil Stooke   It wouldn't be targeted, just whatever they ar...   Feb 16 2006, 06:49 PM
|- - babakm   Some imaging of Phoenix candidate site D is on the...   Feb 16 2006, 07:05 PM
- - RNeuhaus   Below is the Sout Pole Cap that looks different th...   Feb 16 2006, 07:10 PM
|- - brianc   A nice article about the MRO HIRISE camera syst...   Feb 16 2006, 08:00 PM
- - djellison   Thing is - only a tiny tiny change in the altitiud...   Feb 17 2006, 12:47 PM
- - Phil Stooke   Emily: "I guess no joke is too old and tired...   Feb 17 2006, 06:58 PM
|- - lyford   QUOTE (Phil Stooke @ Feb 17 2006, 10:58 A...   Feb 17 2006, 08:06 PM
|- - dvandorn   QUOTE (lyford @ Feb 17 2006, 02:06 PM) It...   Feb 18 2006, 12:57 AM
|- - Bob Shaw   QUOTE (dvandorn @ Feb 18 2006, 12:57 AM) ...   Feb 18 2006, 01:06 AM
- - djellison   Being VERY unscientific, approx speed at periareio...   Feb 17 2006, 09:59 PM
|- - Bob Shaw   The way I see it, almost *any* orbit is better tha...   Feb 17 2006, 10:46 PM
|- - AlexBlackwell   QUOTE (Bob Shaw @ Feb 17 2006, 10:46 PM) ...   Feb 17 2006, 10:52 PM
- - AlexBlackwell   Feb. 17, 2006 Dwayne Brown/Erica Hupp Headquarter...   Feb 17 2006, 10:25 PM
- - dvandorn   I think it's probably safest to blame it all o...   Feb 18 2006, 01:19 AM
- - yaohua2000   Mars Reconnaissance Orbiter was only 5 million kil...   Feb 19 2006, 01:12 AM
- - RNeuhaus   After reading more details about MRO. I found it m...   Feb 19 2006, 06:14 AM
|- - djellison   [quote name='RNeuhaus' post='42269' date='Feb 19 2...   Feb 19 2006, 09:32 AM
|- - helvick   QUOTE (djellison @ Feb 19 2006, 09:32 AM)...   Feb 19 2006, 10:57 AM
- - The Messenger   Nice collection of details. Hydrazine (HN#NH) has ...   Feb 19 2006, 06:35 AM
|- - dilo   Thanks for resuming all these infos, Rodolfo (perh...   Feb 19 2006, 07:50 AM
- - deglr6328   QUOTE (RNeuhaus @ Feb 19 2006, 06:14 AM) ...   Feb 19 2006, 10:46 AM
- - Airbag   Another interesting tidbit - MRO uses the same X-b...   Feb 19 2006, 07:26 PM
|- - Bob Shaw   QUOTE (Airbag @ Feb 19 2006, 07:26 PM) An...   Feb 19 2006, 09:41 PM
|- - belleraphon1   QUOTE (Airbag @ Feb 19 2006, 02:26 PM) An...   Feb 20 2006, 12:51 AM
- - Myran   QUOTE Bob Shaw said Am I alone in thinking that th...   Feb 19 2006, 11:03 PM
- - djellison   I imagine that a spacecraft that notices a signal ...   Feb 19 2006, 11:07 PM
|- - Steve   QUOTE (djellison @ Feb 19 2006, 06:07 PM)...   Feb 19 2006, 11:27 PM
|- - Bob Shaw   QUOTE (Steve @ Feb 19 2006, 11:27 PM) Ass...   Feb 19 2006, 11:40 PM
- - djellison   I was thinking that, I imagine they can sequence t...   Feb 19 2006, 11:42 PM
- - edstrick   On it's second lunar day, JPL tried to get Sur...   Feb 20 2006, 06:08 AM
|- - ugordan   Don't the DSN uplink commands have a sort of d...   Feb 20 2006, 08:27 AM
- - edstrick   I think we're dealing with paleolithic technol...   Feb 20 2006, 08:46 AM
|- - Airbag   QUOTE (edstrick @ Feb 20 2006, 03:46 AM) ...   Feb 20 2006, 07:22 PM
|- - Bob Shaw   Can I patent interplanetary MAC addresses - they c...   Feb 20 2006, 10:18 PM
|- - helvick   QUOTE (Bob Shaw @ Feb 20 2006, 10:18 PM) ...   Feb 21 2006, 12:08 AM
|- - Bob Shaw   QUOTE (helvick @ Feb 21 2006, 12:08 AM) I...   Feb 21 2006, 11:16 AM
|- - helvick   QUOTE (Bob Shaw @ Feb 21 2006, 11:16 AM) ...   Feb 21 2006, 02:19 PM
|- - mcaplinger   QUOTE (Bob Shaw @ Feb 21 2006, 03:16 AM) ...   Feb 21 2006, 02:39 PM
- - Myran   QUOTE Airbag said: Change Opportunity's antenn...   Feb 20 2006, 10:40 PM
- - djellison   As I understand it - spacecraft are all moving ver...   Feb 21 2006, 03:27 PM
- - Toma B   Is there any planed imaging with HiRISE on approac...   Feb 24 2006, 07:47 AM
|- - ugordan   There's always a good reason for not performin...   Feb 24 2006, 08:06 AM
|- - djellison   --><div class='quotetop'>QUOTE(T...   Feb 24 2006, 08:27 AM
- - Sunspot   The same was done with Cassini during the week or ...   Feb 24 2006, 09:38 AM
- - AlexBlackwell   The MRO arrival press kit is now up: Mars Reconna...   Feb 24 2006, 04:35 PM
|- - mcaplinger   QUOTE (AlexBlackwell @ Feb 24 2006, 08:35...   Feb 26 2006, 06:06 PM
- - djellison   And the press conf is in an hour and a bit as well...   Feb 24 2006, 04:53 PM
|- - jmknapp   QUOTE (djellison @ Feb 24 2006, 11:53 AM)...   Feb 25 2006, 03:29 PM
- - RNeuhaus   The MRO spacecraft will remain out of contact for ...   Feb 26 2006, 06:27 PM
|- - The Messenger   QUOTE (RNeuhaus @ Feb 26 2006, 11:27 AM) ...   Feb 27 2006, 04:17 PM
|- - Bob Shaw   QUOTE (RNeuhaus @ Feb 26 2006, 06:27 PM) ...   Feb 27 2006, 04:21 PM
- - edstrick   With apollo, for both orbit insertion and trans-ea...   Feb 27 2006, 07:10 AM
|- - jmknapp   Does anyone know which DSN stations and/or other f...   Feb 27 2006, 03:32 PM
|- - RNeuhaus   QUOTE (jmknapp @ Feb 27 2006, 10:32 AM) D...   Feb 27 2006, 07:07 PM
|- - mcaplinger   QUOTE (RNeuhaus @ Feb 27 2006, 11:07 AM) ...   Feb 27 2006, 07:46 PM
- - djellison   Of course - the reason for having such a low targe...   Feb 27 2006, 04:28 PM
|- - jmknapp   QUOTE (djellison @ Feb 27 2006, 11:28 AM)...   Feb 27 2006, 04:50 PM
|- - mcaplinger   QUOTE (djellison @ Feb 27 2006, 08:28 AM)...   Feb 27 2006, 04:54 PM
- - djellison   Stanford was listening to MER because MER was also...   Feb 27 2006, 04:53 PM
- - djellison   Ahh - someone mis-quoted the press pdf previously ...   Feb 27 2006, 05:01 PM
- - Bob Shaw   QUOTE (djellison @ Feb 27 2006, 05:01 PM)...   Feb 27 2006, 05:11 PM
2 Pages V   1 2 >

« Next Oldest · MRO 2005 · Next Newest »
 

Reply to this topicStart new topic

 

Display Mode: Switch to: Standard · Switch to: Linear+ · Outline

Track this topic · Email this topic · Print this topic · Subscribe to this forum

RSS Lo-Fi Version Time is now: 1st November 2024 - 12:07 AM
Powered By IP.Board © 2024  IPS, Inc.
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.