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#200
by
robertross
on 10 Aug, 2012 17:00
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#201
by
Chris Bergin
on 10 Aug, 2012 17:01
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EDL team and software team leading.
The cool Adam S!
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#202
by
robertross
on 10 Aug, 2012 17:03
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#203
by
robertross
on 10 Aug, 2012 17:03
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#204
by
Chris Bergin
on 10 Aug, 2012 17:03
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Jody Davis - wow.
EDL team get a round of applause.
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#205
by
robertross
on 10 Aug, 2012 17:05
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weather at landing: beat sand storms
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#206
by
Chris Bergin
on 10 Aug, 2012 17:08
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Entry parameters were almost spot on, including one parameter estimated over a million miles from Mars. Was a clear and cold day during landing.
There's recorded EDL data (100MB) on MSL to be sent back. Only have 1mb of data on EDL so far.
Got more coverage than expected from MRO. 1MB of data from MRO and ODY.
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#207
by
robertross
on 10 Aug, 2012 17:08
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updated landing & descent times
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#208
by
Stardust9906
on 10 Aug, 2012 17:09
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#209
by
robertross
on 10 Aug, 2012 17:09
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#210
by
Stardust9906
on 10 Aug, 2012 17:11
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#211
by
robertross
on 10 Aug, 2012 17:11
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discussing tungsten ballasts to adjust/trim trajectory
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#212
by
robertross
on 10 Aug, 2012 17:14
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Pulled a little over 11 Gs
3 bank reversals (last one right at the end of range control, so ended up 1 mile higher which caused the error seen at lading) (~ 1 mile off previously noted)
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#213
by
Chris Bergin
on 10 Aug, 2012 17:14
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Notes about how previous missions added a lot of knowledge to MSL's EDL.
Slightly off the landing site was to do with the third bank reversal, where the vehicle climbed a bit. Could have also been related to tail winds.
Notes about the history of JSC's involvement with landings.
"I've been trying to find something interesting to talk about apart from the small miss distance, but I can't".
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#214
by
Stardust9906
on 10 Aug, 2012 17:17
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#215
by
robertross
on 10 Aug, 2012 17:21
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Kevin Kipp
Talking about parachute, the vent to let air escape
No tearing visible
Perfectly functioning
Also reviewed against entry timeline
259 sec after entry (based on 241 to 263 sec predicted window)
Took 20 sec to deccelerate down to Mach 0.7
Parachute Separation happened 95 sec after heat shield separation (from a 60-150 sec range)
(this all based on limited data available that they inferred)
Talking about oscillations of the capsule below the parachute, and trying to limit it. "Risk Mode". Turned out to be benign from the thumbnail video replay previously seen of heat shield falling away.
Radar beams measuring the ground can be affected by the oscillations, which were minimized
1-2 deg/sec capsule rotation during descent under the capsule (figured up to 3 deg/sec)
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#216
by
Chris Bergin
on 10 Aug, 2012 17:22
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Parachute guy is happy with his parameters. Based on limited data.
Wrist mode (the wobble under parachute) can be seen in that video shown a few days ago. Shows wrist mode was small - 1 to 2 degrees of rotation.
Wanted to get the heatshield away as far as possible so as not to cause radar problems. Photos show that was all good.
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#217
by
robertross
on 10 Aug, 2012 17:23
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From the image of the capsule descending,
the heat shield is actually 15m away and this was after 3 seconds
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#218
by
Stardust9906
on 10 Aug, 2012 17:23
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#219
by
robertross
on 10 Aug, 2012 17:24
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