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MSL EDL Hardware, Its state & fate
bigdipper
post Aug 7 2012, 06:17 PM
Post #31


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Looking at the HiRISE imagery of the descent stage, does the distribution of the debris field represent the disintegration of the stage from impact only, or is it possible that some or all of the 140+/- kilos of Hydrozine exploded and expanded the debris field? [I understand the darker albedo material is from below the surface]

Does the thin martian atmosphere contain enough oxygen to support combustion/explosion? [guessing No, but my chem is insufficient]

Were the hydrazine cells sufficiently designed to survive impact intact?

I couldn't find anything on the net or in the specs, any ideas?
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- bigdipper   MSL EDL Hardware   Aug 7 2012, 06:17 PM
- - john_s   I seem to remember there was some concern that Opp...   Aug 7 2012, 11:54 PM
|- - MahFL   QUOTE (john_s @ Aug 7 2012, 11:54 PM) I s...   Aug 8 2012, 01:46 AM
|- - gallen_53   QUOTE (MahFL @ Aug 8 2012, 01:46 AM) Reme...   Aug 8 2012, 07:34 PM
|- - kwan3217   QUOTE (gallen_53 @ Aug 8 2012, 01:34 PM) ...   Aug 8 2012, 08:00 PM
|- - gallen_53   QUOTE (kwan3217 @ Aug 8 2012, 09:00 PM) S...   Aug 8 2012, 09:27 PM
- - James Sorenson   I'm not sure if this was discussed, I apologiz...   Aug 8 2012, 12:08 AM
|- - fredk   QUOTE (James Sorenson @ Aug 8 2012, 12:08...   Aug 8 2012, 12:35 AM
|- - Mongo   QUOTE (fredk @ Aug 8 2012, 01:35 AM) Good...   Aug 8 2012, 12:43 AM
- - nprev   Please post all comments regarding the ancillary h...   Aug 8 2012, 12:14 AM
- - Explorer1   James: if it is one of the ballast masses it's...   Aug 8 2012, 12:25 AM
- - James Sorenson   Okay thanks Explorer1. The dark ejecta from that f...   Aug 8 2012, 12:33 AM
- - fredk   Here are a couple more little dark splotches, that...   Aug 8 2012, 12:46 AM
- - Explorer1   Yes, there's something to be said for a compli...   Aug 8 2012, 12:48 AM
|- - MahFL   QUOTE (Explorer1 @ Aug 8 2012, 12:48 AM) ...   Aug 8 2012, 01:39 AM
- - elakdawalla   I'm glad I didn't have time to write up th...   Aug 8 2012, 01:23 AM
- - James Sorenson   WOW!! GM showes a rough distance of 2,300 ...   Aug 8 2012, 01:27 AM
- - dvandorn   Methinks if we ever use a skycrane type of landing...   Aug 8 2012, 01:32 AM
|- - B Bernatchez   QUOTE (dvandorn @ Aug 7 2012, 08:32 PM) M...   Aug 8 2012, 03:24 AM
- - dvandorn   I've taken a closer look at the descent stage ...   Aug 8 2012, 02:36 AM
- - fredk   And we can see glints off the descent stage debris...   Aug 8 2012, 02:59 AM
- - jklier   Any chance HIRISE caught the skycrane phase of the...   Aug 8 2012, 03:21 AM
|- - Explorer1   If it had, we'd have seen it by now.   Aug 8 2012, 03:25 AM
- - elakdawalla   There was an interesting discussion about that on ...   Aug 8 2012, 03:25 AM
- - James Sorenson   Doug, according to the HiRISE images in GM, those ...   Aug 8 2012, 03:27 AM
|- - dvandorn   QUOTE (James Sorenson @ Aug 7 2012, 10:27...   Aug 8 2012, 03:34 AM
- - fredk   Here's a flicker gif between two R rhaz frames...   Aug 8 2012, 03:33 AM
- - James Sorenson   Fred that is interesting! Looks the same to me...   Aug 8 2012, 03:43 AM
|- - fredk   QUOTE (James Sorenson @ Aug 8 2012, 03:43...   Aug 8 2012, 04:40 AM
- - elakdawalla   I thought "lens flare" too, when I saw i...   Aug 8 2012, 04:04 AM
- - dvandorn   Well, even if we steer wide and clear of the desce...   Aug 8 2012, 04:09 AM
- - Explorer1   There's a tiny spot just to the right of the s...   Aug 8 2012, 04:18 AM
|- - mcaplinger   QUOTE (Explorer1 @ Aug 7 2012, 08:18 PM) ...   Aug 8 2012, 05:31 AM
- - MarsInMyLifetime   I have a hard time getting my head around the inte...   Aug 8 2012, 06:52 AM
|- - Kaputnik   200mph was the speed of the whole spacecraft under...   Aug 8 2012, 07:07 AM
|- - djellison   QUOTE (MarsInMyLifetime @ Aug 7 2012, 11...   Aug 8 2012, 07:13 AM
|- - MarsInMyLifetime   I could not find a predicted impact velocity, but ...   Aug 8 2012, 09:37 AM
- - Hungry4info   Marginally related, but now that we've firmly ...   Aug 8 2012, 02:22 PM
|- - ugordan   QUOTE (Hungry4info @ Aug 8 2012, 04:22 PM...   Aug 8 2012, 03:25 PM
- - eoincampbell   We'll also see any shifting of the chute mater...   Aug 8 2012, 02:28 PM
- - fredk   Interesting thoughts, MarsInMyLifetime. If the ba...   Aug 8 2012, 02:58 PM
- - gpurcell   Given the extremely thin atmosphere on Mars I doub...   Aug 8 2012, 03:24 PM
- - Explorer1   They found the ballasts! See the press conf...   Aug 8 2012, 05:21 PM
|- - JTN   QUOTE (Explorer1 @ Aug 8 2012, 06:21 PM) ...   Aug 8 2012, 06:01 PM
- - Oersted   ...And well... The biggest visible opening in the ...   Aug 8 2012, 06:11 PM
- - Explorer1   Yeah, they're really not as out of reach as wa...   Aug 8 2012, 06:16 PM
- - charleski   I haven't seen anyone talk about this, and it ...   Aug 8 2012, 08:55 PM
|- - Kaputnik   QUOTE (charleski @ Aug 8 2012, 09:55 PM) ...   Aug 8 2012, 08:59 PM
|- - MaG   QUOTE (charleski @ Aug 8 2012, 09:55 PM) ...   Aug 8 2012, 09:02 PM
|- - ugordan   QUOTE (charleski @ Aug 8 2012, 10:55 PM) ...   Aug 8 2012, 09:03 PM
|- - gallen_53   QUOTE (charleski @ Aug 8 2012, 09:55 PM) ...   Aug 8 2012, 09:12 PM
|- - MoreInput   QUOTE (charleski @ Aug 8 2012, 10:55 PM) ...   Aug 8 2012, 09:39 PM
- - Ian R   Given the phase angle here, could it be a shadow c...   Aug 8 2012, 09:08 PM
|- - ugordan   A shadow would be placed pretty much in the middle...   Aug 8 2012, 09:11 PM
- - elakdawalla   C'mon, guys, Mike Caplinger answered that very...   Aug 8 2012, 09:12 PM
|- - charleski   QUOTE (elakdawalla @ Aug 8 2012, 10:12 PM...   Aug 8 2012, 09:33 PM
|- - Bunker9603   QUOTE (elakdawalla @ Aug 8 2012, 05:12 PM...   Aug 8 2012, 09:55 PM
- - elakdawalla   It will be very simple to answer that question as ...   Aug 8 2012, 10:16 PM
|- - gallen_53   QUOTE (elakdawalla @ Aug 8 2012, 10:16 PM...   Aug 8 2012, 11:30 PM
|- - mcaplinger   QUOTE (elakdawalla @ Aug 8 2012, 02:16 PM...   Aug 9 2012, 12:41 AM
|- - charleski   QUOTE (mcaplinger @ Aug 9 2012, 01:41 AM)...   Aug 9 2012, 02:52 AM
|- - mcaplinger   QUOTE (charleski @ Aug 8 2012, 06:52 PM) ...   Aug 9 2012, 03:25 AM
|- - charleski   QUOTE (mcaplinger @ Aug 9 2012, 04:25 AM)...   Aug 9 2012, 07:54 PM
- - EdTruthan   I recently found the forum here and have to say i...   Aug 8 2012, 10:29 PM
|- - Gladstoner   .   Aug 8 2012, 11:18 PM
|- - djellison   QUOTE (EdTruthan @ Aug 8 2012, 02:29 PM) ...   Aug 9 2012, 07:04 PM
- - DFinfrock   Welcome to umsf! That's a great way to il...   Aug 8 2012, 10:44 PM
- - fredk   Great illustration, EdTruthan! I'll look ...   Aug 8 2012, 10:57 PM
|- - EdTruthan   QUOTE (fredk @ Aug 8 2012, 02:57 PM) Grea...   Aug 10 2012, 07:43 PM
- - Ian R   It is, indeed, crud:   Aug 8 2012, 11:47 PM
|- - gallen_53   QUOTE (Ian R @ Aug 9 2012, 12:47 AM) It i...   Aug 8 2012, 11:58 PM
|- - StephenGFX   QUOTE (gallen_53 @ Aug 8 2012, 03:58 PM) ...   Aug 9 2012, 02:13 AM
|- - gallen_53   QUOTE (StephenGFX @ Aug 9 2012, 03:13 AM)...   Aug 9 2012, 07:30 PM
- - Oersted   DPReview interview with Mike Ravine of Malin Space...   Aug 9 2012, 12:36 AM
- - eoincampbell   I find the lack of dust on the landed MARDI lens s...   Aug 9 2012, 01:19 AM
- - Burmese   I know they have built up in advance a list of wha...   Aug 9 2012, 03:09 AM
- - djellison   I asked Justin Maki about that. Sadly we're no...   Aug 9 2012, 03:22 AM
- - elakdawalla   If you have questions about MSL MARDI, this is the...   Aug 9 2012, 06:04 AM
- - elakdawalla   This forum is all about SNR, and your first and on...   Aug 9 2012, 10:57 PM
- - Zeke4ther   Thank-you for a very informative post! Welcome...   Aug 10 2012, 02:28 AM
- - Pando   I don't know if this has been discussed before...   Aug 10 2012, 09:26 PM
|- - walfy   QUOTE (Pando @ Aug 10 2012, 01:26 PM) I w...   Aug 10 2012, 09:54 PM
- - nprev   Very good Aviation Week article about EDL; lotsa n...   Aug 11 2012, 12:37 AM
|- - Tom Tamlyn   The Aviation Week EDL article highlighted up threa...   Aug 14 2012, 03:52 AM
|- - vikingmars   QUOTE (nprev @ Aug 11 2012, 02:37 AM) Ver...   Aug 14 2012, 11:04 AM
- - djellison   I thought this might be the case based on Navcam, ...   Aug 12 2012, 07:35 AM
- - Explorer1   Yes, the horizon is surprisingly close in some dir...   Aug 12 2012, 07:56 AM
- - djellison   We wont need to visit it to see how it performed -...   Aug 12 2012, 06:42 PM
- - dvandorn   Question -- is there anything about the compositio...   Aug 12 2012, 06:58 PM
- - djellison   This one is PICA. Phenolic impregnated carbon abl...   Aug 12 2012, 07:10 PM
- - EdTruthan   The area of the heatshield impact appears to be cl...   Aug 12 2012, 07:51 PM
|- - Stellingwerff   QUOTE (EdTruthan @ Aug 12 2012, 09:51 PM)...   Aug 12 2012, 08:29 PM
- - Explorer1   I think the direction is spot-on, but I think ther...   Aug 12 2012, 08:12 PM
- - EdTruthan   QUOTE (Explorer1 @ Aug 12 2012, 12:12 PM)...   Aug 12 2012, 10:52 PM
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