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#120 by ChrisC on 08 Feb, 2008 22:18
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JohnV - 8/2/2008 6:06 PM
That was tape deck shuttling. They fast forwarded to the interesting part, then backed it up, then played back at regular speed. You can tell because A) it did the motion reversal, B) the door moved WAY too fast, and C) you see macroblocking artifacts. It's not really macroblocking (in the MPEG2 sense), but typical of shuttling DigiBeta decks, which is what I assume they're using. Could be hard drive, of course, but it's still the same thing. Overshoot the start, go back, play.
Is it standard for the starboard door to open part way, re-close, then completely open? Just curious since the port door didn't seem to follow the same pattern.
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#121 by ntschke on 08 Feb, 2008 22:21
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Spiff - 8/2/2008 5:38 PM Ok, this may have to go in the Q&A section, but on the other hand maybe not... Anyway.... The PAO commentator kept talking before and after the NC3 burn about it increasing Atlantis velocity and so increasing the speed of approach. However, to my best knowledge of orbital mechanics, (which I admit isn't very large,) increasing something's velocity in orbit will cause its orbit to take longer (the whole raise apogee by increasing velocity at perigee stuff...) Thus Atlantis should catch up less fast with the station. What am I missing?
I'm curious about this too. the higher the satellite, the longer it will take to complete 1 orbit right? (just like the furhter out a planet is)l. So if the burn was in the plus x direction they're in effect raising the altitude in order to catch/raise up to ISS. Right?
Any experts want to enlighten us?
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#122 by Jim on 08 Feb, 2008 22:28
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my reply stills applicable. PAO simplifies things
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#123 by Avron on 08 Feb, 2008 22:35
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Jim - 8/2/2008 6:28 PM
my reply stills applicable. PAO simplifies things
Slowing down in closing with the ISS, yes? -
#124 by Jim on 08 Feb, 2008 22:38
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"increasing Atlantis velocity and so increasing the speed of approach"
in this point. one half can only be true -
#125 by ApolloLee on 08 Feb, 2008 22:43
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Marcia Dunn never fails.... (though mind you, writers don't usually write the headlines)
Headline of Dunn's AP shuttle right now: Astronauts check shuttle for damage
Atlantis is doomed -
#126 by nathan.moeller on 08 Feb, 2008 22:45
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ApolloLee - 8/2/2008 5:43 PM
Marcia Dunn never fails.... (though mind you, writers don't usually write the headlines)
Headline of Dunn's AP shuttle right now: Astronauts check shuttle for damage
Atlantis is doomed
Dunn is not a journalist in my book. Just ignore her. Anyway, sounds like a great report so far from the higher-ups. -
#127 by Avron on 08 Feb, 2008 22:53
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nathan.moeller - 8/2/2008 6:45 PM
QuoteApolloLee - 8/2/2008 5:43 PM
Marcia Dunn never fails.... (though mind you, writers don't usually write the headlines)
Headline of Dunn's AP shuttle right now: Astronauts check shuttle for damage
Atlantis is doomed
Dunn is not a journalist in my book. Just ignore her. Anyway, sounds like a great report so far from the higher-ups.
And thus no news for AP's view of the world -- need a story of doom -
#128 by Chris Bergin on 08 Feb, 2008 23:02
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Needs to be said that technically they did check Atlantis for damage, that's what the inspections are for, and it was probably a subeditor who wrote the headline - which was loaded, as Joe Public would read that and might assume there's damage to check for...
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#129 by Lee Jay on 08 Feb, 2008 23:07
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ApolloLee - 8/2/2008 4:43 PM
Headline of Dunn's AP shuttle right now: Astronauts check shuttle for damage
Ummmm....isn't that what they were doing? -
#130 by Avron on 08 Feb, 2008 23:13
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Lee Jay - 8/2/2008 7:07 PM
QuoteApolloLee - 8/2/2008 4:43 PM
Headline of Dunn's AP shuttle right now: Astronauts check shuttle for damage
Ummmm....isn't that what they were doing?
Could be "Clean launch for Shuttle "or "shuttle problem board is clear" -
#131 by Chris Bergin on 08 Feb, 2008 23:16
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Avron - 8/2/2008 12:13 AM
QuoteLee Jay - 8/2/2008 7:07 PM
QuoteApolloLee - 8/2/2008 4:43 PM
Headline of Dunn's AP shuttle right now: Astronauts check shuttle for damage
Ummmm....isn't that what they were doing?
Could be "Clean launch for Shuttle "or "shuttle problem board is clear"
Works for a space flight specific site like us, but mass media are about getting eyeballs, and that's why the headline is as they've got it. Doesn't mean it's right, but that's how it is.
I've worked mass media. You wouldn't believe how much a subeditor can angle your copy to grab eyeballs. -
#132 by DaveS on 08 Feb, 2008 23:20
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Ford Mustang - 8/2/2008 12:07 AM
That's the EE camera. It's the EE itself! The camera+light fixture is mounted on top of the EE cylinder.
Now cameras looking directly into the RMS end effector camera: -
#133 by ntschke on 08 Feb, 2008 23:23
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Jim - 8/2/2008 6:28 PM my reply stills applicable. PAO simplifies things
Your reply didn't answer the question. If you don't want to that's fine...just trying to determine if the vehicle is actually "speeding up" to compensate for the higher (and larger) orbit or if there are other factors involved.
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#134 by MKremer on 08 Feb, 2008 23:32
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Avron - 8/2/2008 6:13 PM
QuoteLee Jay - 8/2/2008 7:07 PM
QuoteApolloLee - 8/2/2008 4:43 PM
Headline of Dunn's AP shuttle right now: Astronauts check shuttle for damage
Ummmm....isn't that what they were doing?
Could be "Clean launch for Shuttle "or "shuttle problem board is clear"
Wire service reporters don't write the headlines for their stories (and don't have any control over what ends up as the headline).
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#135 by Jim on 08 Feb, 2008 23:34
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ntschke - 8/2/2008 7:23 PM
QuoteJim - 8/2/2008 6:28 PM my reply stills applicable. PAO simplifies things
Your reply didn't answer the question. If you don't want to that's fine...just trying to determine if the vehicle is actually "speeding up" to compensate for the higher (and larger) orbit or if there are other factors involved.
Can't answer it. Don't know the actual direction of the burn.
It physically can't speed up in a higher orbit. For a each point in a given orbit, velocity and altitude are fixed. change the velocity and it changes the orbit
A positive burn would result in a higher orbit and therefore slower.
Hence the confusion in what PAO said.
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#136 by MKremer on 08 Feb, 2008 23:41
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ntschke - 8/2/2008 6:23 PM
QuoteJim - 8/2/2008 6:28 PM my reply stills applicable. PAO simplifies things
Your reply didn't answer the question. If you don't want to that's fine...just trying to determine if the vehicle is actually "speeding up" to compensate for the higher (and larger) orbit or if there are other factors involved.
Adding energy raises the apogee. The actual velocity in a higher orbit is slower than a lower orbit, even though it requires more energy (ie- acceleration from an engine or thruster) to get there.
You can't go both higher and faster (that is, unless you want to escape Earth orbit altogether, or waste a whole bunch of fuel speeding to your higher target then braking to match velocities).
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#137 by Lee Jay on 08 Feb, 2008 23:47
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Avron - 8/2/2008 5:13 PM
QuoteLee Jay - 8/2/2008 7:07 PM
QuoteApolloLee - 8/2/2008 4:43 PM
Headline of Dunn's AP shuttle right now: Astronauts check shuttle for damage
Ummmm....isn't that what they were doing?
Could be "Clean launch for Shuttle "or "shuttle problem board is clear"
Sure, but that doesn't describe today's activities. The primary task for today was, in fact, to inspect the orbiter for damage. So far, they haven't found any, and none was expected, but that doesn't mean they weren't looking for it - they were.
I've seen some unbelievably bad headlines relating to Shuttle flights and ISS issues in the past. This wasn't one of them. It was more-or-less accurate, if a bit eye-ball catching. -
#138 by Ford Mustang on 09 Feb, 2008 00:32
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Someone's playing around with the RMS camera! :bleh:
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#139 by Ford Mustang on 09 Feb, 2008 00:46
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Atlantis and her crew have now entered the official crew sleep period, ending Flight Day 2.