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Phoenix EDL SUCCESS!!!!!
ElkGroveDan
post May 25 2008, 10:13 PM
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All Phoenix commentary is now being directed over here.


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If Occam had heard my theory, things would be very different now.
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SpaceListener
post May 25 2008, 11:28 PM
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What is the reason that Phoenix will use Pulse thrusters to land on Mars instead of chemical thrusters which were used others spacecrafts landing on Moon?

I know that the 2 Vikings used the same Pulse Thrusters Technology. What are the advantages of using that technology?

One important thing is that the spacecraft will have about 600 kg on Earth or about 198 kgs on Mars.

I suspect that the pulsed thrusters has an advantage to damage less on the surface than a chemical engine.
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- ElkGroveDan   Phoenix EDL SUCCESS!!!!!   May 25 2008, 10:13 PM
- - kwan3217   What is the exact peanut deployment sequence? I ha...   May 25 2008, 10:15 PM
- - Alex Chapman   Wonder what that data is on the left screen at the...   May 25 2008, 10:16 PM
- - ustrax   Checking in! 1 hour 38 minutes from Mars...   May 25 2008, 10:16 PM
- - dvandorn   OK, good. I almost endng up spending the next lit...   May 25 2008, 10:16 PM
- - Stu   Kendal checking in... good luck everyone   May 25 2008, 10:17 PM
|- - ustrax   My dog just landed in the couch...I'll face th...   May 25 2008, 10:19 PM
|- - Alex Chapman   QUOTE (ustrax @ May 25 2008, 11:19 PM) My...   May 25 2008, 10:23 PM
- - Oersted   phoenuts to be eaten BEFORE EDL, otherwise they do...   May 25 2008, 10:19 PM
- - nprev   Got it; glad it's locked down. GO PHOENIX...   May 25 2008, 10:20 PM
- - climber   Nix, I'm having breakfast at ths time (I woke ...   May 25 2008, 10:20 PM
- - Nix   my cats have been lying around here for days... ye...   May 25 2008, 10:21 PM
|- - MahFL   All set here, beer and peanuts. Michael Florida.   May 25 2008, 10:23 PM
- - Oersted   People in mission control are beginning to jostle ...   May 25 2008, 10:23 PM
- - Roby72   1h30 to landing ERT Robert   May 25 2008, 10:24 PM
|- - ustrax   Mark Lemmon just passed by spacEurope to thanks us...   May 25 2008, 10:31 PM
|- - mars loon   30 minutes to landing GO Phoenix watching NASA T...   May 25 2008, 11:18 PM
- - Juramike   One of my blueberry bushes produced it's first...   May 25 2008, 10:24 PM
- - lyford   Is the party in here? Where is everyone? Over at ...   May 25 2008, 10:24 PM
- - SpaceListener   Here, the NASA TV stil does not play. How are your...   May 25 2008, 10:25 PM
- - Alex Chapman   Mines playing fine on the 500k stream   May 25 2008, 10:26 PM
- - TheChemist   It's much better here, with good ol' frien...   May 25 2008, 10:26 PM
- - Stu   Listener, I'm watching NASA TV just fine... go...   May 25 2008, 10:26 PM
- - scalbers   I'm getting NASA TV OK at this site: http://c...   May 25 2008, 10:27 PM
- - Leither   Video's gone down - hope this is not an omen.   May 25 2008, 10:29 PM
|- - Stu   QUOTE (Leither @ May 25 2008, 11:29 PM) V...   May 25 2008, 10:30 PM
- - dvandorn   Whichever NASA TV gets ported into my cable system...   May 25 2008, 10:30 PM
|- - Gonzz   Getting sound now from NASA TV Blood pressure ris...   May 25 2008, 10:32 PM
- - Leither   Video back now - slow down on the whisky   May 25 2008, 10:31 PM
- - climber   Sound's ok but images looks like a slide show....   May 25 2008, 10:34 PM
- - TheChemist   Still just a Coming Up screen at the nasatv web st...   May 25 2008, 10:35 PM
|- - Alex Chapman   QUOTE (TheChemist @ May 25 2008, 11:35 PM...   May 25 2008, 10:36 PM
- - pioneer   Watching NASA TV - right now it's just has a d...   May 25 2008, 10:36 PM
- - volcanopele   May I open my jar of peanuts now?   May 25 2008, 10:36 PM
- - Toma B   Wow!!!   May 25 2008, 10:39 PM
|- - ustrax   QUOTE (Toma B @ May 25 2008, 11:39 PM) Wo...   May 25 2008, 10:42 PM
|- - centsworth_II   QUOTE (ustrax @ May 25 2008, 05:42 PM) Am...   May 25 2008, 10:55 PM
- - lyford   direct link to public feed - http://www.nasa.gov...   May 25 2008, 10:39 PM
- - alan   less than an hour to go   May 25 2008, 10:39 PM
- - Stu   Chemist... try refreshing your screen or try http:...   May 25 2008, 10:39 PM
|- - Graham   Can one be here without peanuts or are they compul...   May 25 2008, 10:43 PM
- - dvandorn   The EDL timeline graphic shows the landing at 4:53...   May 25 2008, 10:40 PM
- - jamescanvin   Checking in... Peanuts being munched and beer is ...   May 25 2008, 10:41 PM
- - Sunspot   Really starting to physically feel the tension now...   May 25 2008, 10:44 PM
- - Juramike   NASA-TV is just showing a really cool computer sim...   May 25 2008, 10:45 PM
- - Leither   Now under an hour - pop the peanuts   May 25 2008, 10:47 PM
- - pioneer   1 hour to cruise stage separation. I read somewhe...   May 25 2008, 10:47 PM
- - TheChemist   Thanks Stu, now it works again ... Got to get some...   May 25 2008, 10:48 PM
- - volcanopele   Peanut jar opened. Peanuts of choice: Honey roast...   May 25 2008, 10:49 PM
- - dvandorn   I opened my peanuts a couple of hours ago and have...   May 25 2008, 10:51 PM
|- - SFJCody   We are go for peanut deployment. Initiate the pack...   May 25 2008, 10:54 PM
- - Roby72   1h to landing ERT   May 25 2008, 10:53 PM
- - Rakhir   I opened my peanuts jar when NASA TV coverage bega...   May 25 2008, 10:54 PM
|- - brellis   QUOTE (Rakhir @ May 25 2008, 03:54 PM) I ...   May 25 2008, 10:56 PM
|- - SFJCody   That's within nominal peanut eating parameters...   May 25 2008, 10:56 PM
- - Sunspot   OMG.. I just found some peanuts in a kitchen cupbo...   May 25 2008, 10:57 PM
|- - ustrax   Guess that less than an hour is time to listen to ...   May 25 2008, 10:59 PM
|- - SFJCody   A peanut smiley would be good at this point.   May 25 2008, 11:00 PM
- - kwan3217   The timeline on the NASA blog latest entry shows e...   May 25 2008, 11:01 PM
- - stewjack   pioneer wrote: I read somewhere only 1 trench wil...   May 25 2008, 11:01 PM
- - paxdan   Go Phoenix!!1   May 25 2008, 11:02 PM
- - pioneer   TCM cabinet heaters have been activated.   May 25 2008, 11:02 PM
- - climber   Check Emily blog; SS said the'll test driving ...   May 25 2008, 11:05 PM
- - Gonzz   Fasten your seat belt and stow your tray table, we...   May 25 2008, 11:05 PM
- - elakdawalla   Actually that was prolly a bit stronger than what ...   May 25 2008, 11:06 PM
- - Stu   VERY well done on the UStream chat Emily, it went ...   May 25 2008, 11:07 PM
- - nprev   My peanuts have been deployed, and now I have to w...   May 25 2008, 11:07 PM
|- - ugordan   Odyssey is GO for EDL comm support...   May 25 2008, 11:08 PM
|- - climber   QUOTE (nprev @ May 26 2008, 01:07 AM) My ...   May 25 2008, 11:11 PM
- - kwan3217   For those watching streams on the Net, be aware th...   May 25 2008, 11:08 PM
- - Pete B.   The Science Channel on cable in the US has coverag...   May 25 2008, 11:08 PM
- - PaulW   Not sure if this has been mentioned previously, bu...   May 25 2008, 11:08 PM
- - volcanopele   hey Emily, thanks for answering my question on whe...   May 25 2008, 11:09 PM
- - lyford   Is there a way to set this thread to auto refresh?...   May 25 2008, 11:09 PM
|- - kwan3217   QUOTE (lyford @ May 25 2008, 04:09 PM) Is...   May 25 2008, 11:12 PM
|- - brellis   QUOTE (kwan3217 @ May 25 2008, 04:12 PM) ...   May 25 2008, 11:16 PM
- - Dominik   This is the first time that I watch a landing live...   May 25 2008, 11:09 PM
|- - Graham   Changing batteries? Copy that !   May 25 2008, 11:11 PM
- - RubberoidLifeform   Anybody know if there's a feed that can go to ...   May 25 2008, 11:14 PM
|- - Stu   QUOTE (RubberoidLifeform @ May 26 2008, 12...   May 25 2008, 11:16 PM
||- - RubberoidLifeform   QUOTE (Stu @ May 25 2008, 06:16 PM) This ...   May 25 2008, 11:21 PM
||- - climber   QUOTE (RubberoidLifeform @ May 26 2008, 01...   May 25 2008, 11:22 PM
|||- - RubberoidLifeform   QUOTE (climber @ May 25 2008, 06:22 PM) R...   May 25 2008, 11:25 PM
||- - Graham   Not full screen with me in IE   May 25 2008, 11:22 PM
||- - Adam   QUOTE (RubberoidLifeform @ May 26 2008, 01...   May 25 2008, 11:24 PM
|||- - Graham   Right clicking does it fine   May 25 2008, 11:25 PM
||- - SFJCody   Arrgh, the tension... it's just hit me that th...   May 25 2008, 11:27 PM
|- - Graham   With a PC use F5 to refresh   May 25 2008, 11:16 PM
- - Alex Chapman   Looks like dmuller is ahead of time on pressurisat...   May 25 2008, 11:18 PM
- - climber   And the big bosses are there to watch...   May 25 2008, 11:19 PM
|- - Graham   I'm worried about Attitude Control - He could ...   May 25 2008, 11:20 PM
- - Dominik   Propulsion system pressurized! Go Phoenix!   May 25 2008, 11:20 PM
- - Gonzz   I am now Go for beer, that will surely change my a...   May 25 2008, 11:23 PM
- - Dominik   Just open the following link with Windows Media Pl...   May 25 2008, 11:24 PM
- - eeergo   Try double-clicking on the image, it works when th...   May 25 2008, 11:25 PM
- - Alex Chapman   Has everyone else lost Emilys blog enteries?   May 25 2008, 11:26 PM
|- - ugordan   QUOTE (Alex Chapman @ May 26 2008, 01:26 ...   May 25 2008, 11:28 PM
- - elakdawalla   OUr ^%*(&*&^$*% website just went dow...   May 25 2008, 11:28 PM
- - SpaceListener   What is the reason that Phoenix will use Pulse thr...   May 25 2008, 11:28 PM
- - Roby72   I ve seen good luck peanuts !   May 25 2008, 11:29 PM
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