Mro On Approach, TCM-3 not required |
Mro On Approach, TCM-3 not required |
 Feb 3 2006, 11:06 PM
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 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!
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Feb 17 2006, 09:59 PM
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#2
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Founder Group: Chairman Posts: 14449 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 |
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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 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 |
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