NASASpaceFlight.com Forum
Commercial and US Government Launch Vehicles => ULA - Delta, Atlas, Vulcan => Topic started by: Chris Bergin on 08/05/2011 12:16 pm
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Live coverage of Atlas V launch attempt with NASA's Juno.
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Pre Launch Day Updates:
http://forum.nasaspaceflight.com/index.php?topic=21164.0
L2 Atlas V/Juno Processing/exclusive images:
http://forum.nasaspaceflight.com/index.php?action=tags&tags=Juno
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Pre Launch/FRR Article:
http://www.nasaspaceflight.com/2011/07/nasa-juno-frr-completed-atlas-delta-share-ride-mariner/
Launch/Mission overview - by William Graham
http://www.nasaspaceflight.com/2011/08/ula-atlasv-nasa-juno-jupiter/
(You all need to read that article from William, it's superb)
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From Saturday, we will continue Juno coverage via our new Interplanetary Spacecraft Coverage Forum Section:
http://forum.nasaspaceflight.com/index.php?board=49.0
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The site will get very busy as we get closer to launch, so please appreciate the thread needs to run on updates, not random posts, and non compliant posts will be deleted by moderators without notice.
Go Atlas, Go Centaur, Go Juno! :)
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In the 30 minute, Built in hold at L minus 2 hours, 40 minutes
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Polling go to procede with cryo tanking.
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Now readiness poll to head into haz ops for the cryo loading. All go.
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Count Start at 13:24 ZULU.
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T minus two hours and counting
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T-120 minutes and counting.
L-130 minutes.
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George interviewing the Juno project manager.
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I bet one of these guys is Jim ;D
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Views in the atrotech processing facility,
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Testing separation nuts
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Jim next time I am in Florida, I want to see this vehicle
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transfer line chill down complete for Centaur
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NASA launch services interview now
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Atlas processing review, was brought to the cape by AN-124 and not the barge like the MSL booster
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Jim probably wasn't in those Juno processing shots. he's not allowed to touch hardware like those guys were doing.
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Jim probably wasn't in those Juno processing shots. he's not allowed to touch hardware like those guys were doing.
What's the reason for that?
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centaur LOX at 40%
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Jim probably wasn't in those Juno processing shots. he's not allowed to touch hardware like those guys were doing.
What's the reason for that?
Only the s/c team touches the spacecraft. Jim is a coordinator.
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Centaur LO2 at 50%
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Centaur 50 pecent on LOX.
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Will have SRB seb, PLF sep then BECO, them main engine ignition 1, MECO-1, second main engine burn, then MECO-2 and s/c sep
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into LO2 topping for Centaur
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Juno PI
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frost starting to form on the core (normal)
Atlas LOX at 40%
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PI has already spent 11 years on this mission.
Juno will reach Jupiter in 5 years, and then do about 1 year of research.
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Jim probably wasn't in those Juno processing shots. he's not allowed to touch hardware like those guys were doing.
What's the reason for that?
Only the s/c team touches the spacecraft. Jim is a coordinator.
... and just when I was going to guess that Jim was the one wearing white... ;)
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showing movie on LSP now
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T minus 1 hour
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showing movie on LSP now
They do a surprising amount of work. Didn't know the first thing about them in the early days of the site. Do now.
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Centaur LH2 at 10%, Atlas now white due to ice coverage (normal)
starting flight control final preps
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LH2 now at 20% for Centaur
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Looks like a beautiful day for a launch.
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Atlas LO2 at 70%, Centaur LH2 at 30%
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dedicated to two individuals today
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Centaur LH2 at 70%
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What is the call we are listening for?
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Atlas LO2 at 90% same for Centaur LH2
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centaur LH2 at 97%, into topping
Fill and drain valve test for LH2/Lo2
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starting final loop FTS test
starting Centaur LH2 topping to flight level
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Atlas LO2 at 99%, doing drain test
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T-25 minutes.
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No technical issues being worked.
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Around L-30 minutes.
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RD-180 transducer converter calibration in work (fancy).
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Weather status in five minutes.
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MECO-1 will signal launch video replays, will be 30 minute coast to second burn
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FTS open loop test complete
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about T minus 1 minus 13 minutes, booster ambient branch temperature went OTC low, now back to flight level
starting anomaly team on the issue
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Red line monitor noted an issue with a booster ambient purge sensor (?).
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Weather brief. All good.
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Red line monitor noted an issue with a booster ambient purge sensor (?).
Caught part of that. Anomamly team convened. The limit on the effected system momentarily drop below LCC limits but recovered.
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Weather briefing, cumulus cloud development but not violating, no showers violating, wind 10-12 knots. Temp is 88 degrees. Upper level winds good
looks good for launch
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clearing OTC with the red line
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ATlas/Centaur LO2 and Centaur Lh2 at flight level
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T minus 4 minutes and holding for 10 minutes
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Into the BIH for 10 minutes.
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SMD conducting com check
looking into something, applying onboard video power (three rocket cameras!)
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"Still looking at something here. Standby a moment".
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Higher than normal charge cycles on the helium system.
Want to discuss.
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seeing higher than normal charge cycles on the Centaur, anomaly team working going to wait on team rather than leave hold
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Working on the anomoly net. Holding switching power process.
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Won't make the opening of the window. Waiting on new T-0.
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Hold extended five minutes at this time.
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Higher than normal charge cycles on the helium system.
Want to discuss.
Presumably there is helium replenishment right up until T-0 and they're seeing more recharging (replenishment) than expected.
- Ed Kyle
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Missed it and can't find it on site: What's the launch window today? 11:34am ET - ???
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Missed it and can't find it on site: What's the launch window today? 11:34am ET - ???
12:43pm ET
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Missed it and can't find it on site: What's the launch window today? 11:34am ET - ???
Window: 11:34 a.m. to 12:43 p.m. EDT
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extending hold additional five minutes
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Additional five minute hold. Not sure if that's confirmation of the first, or 10 mins in total.
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Checking into the data from the WDR to compare results.
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So we're up to at least 15:44 ZULU for the T-0, but likely to slip some more.
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another 5 minute hold extension
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Another five minutes requested on the hold. So that's 15 mins total. 15:49 ZULU for the new T-0.
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Looking nice complete in white ;-) looking forward for a picture perfect launch as we know it from ULA.
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Looking nice complete in white ;-) looking forward for a picture perfect launch as we know it from ULA.
- Ed Kyle
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I wonder if we've got ourselves a new diva to take over from the orbiters ;)
Five minute test being conducted, cryos ceased on the Centaur.
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Another 10 minutes added to the hold.
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Running test on the Centaur Helium system, stopping topping to do so
will extend hold 10 minutes
Trying to see if there is a leak which is why the topping is stopping
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Stop flow on helium charge system. Lock the system and determine if there's a leak in the system.
Three measurements to be taken.
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15:59 ZULU the current T-0 I believe.
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slight violation of backup pressure for RD-180, no problem going forward. System set lower than normal, but still nominal.
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No issues with the previous issue "ambient puge". Good to proceed.
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Ground side leak, phew!
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Leak is on the ground side (good news).
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after Helium test, found leak was on the ground support side and not vehicle
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Range is now no go!
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Some fool in a boat. Choppers sent out to have a stern word ;)
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The boat is 'being dealt with'. *naughty* ;D
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Some fool in a boat? Choppers out to tell him to get out of the range.
Sending choppers out to get him. Annoying boaters. Happened during Ares I-X too.
Orbiter
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Some fool in a boat. Choppers sent out to have a stern word ;)
Wonder if it's an Apache gunship? :D
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Got a new T-0 update yet?
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Some fool in a boat. Choppers sent out to have a stern word ;)
Wonder if it's an Apache gunship? :D
The gunner's the pillsbury dough boy with a bag of flour. A fate worse than being sunk ;)
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I remember hearing a story that these choppers were known to drop bag a bag of flour (to make a horrid mess) with a note attached to them indicating the need for the boat to rapidly get out of the area.
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Some fool in a boat. Choppers sent out to have a stern word ;)
Wonder if it's an Apache gunship? :D
That'd work!
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Some fool in a boat. Choppers sent out to have a stern word ;)
Wonder if it's an Apache gunship? :D
nope, good old Huey:
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Another five minutes on to the hold.
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I remember hearing a story that these choppers were known to drop bag a bag of flour (to make a horrid mess) with a note attached to them indicating the need for the boat to rapidly get out of the area.
Sending the bill for the delay should work. ;) But I'd like to see a video of the flour bombs too...
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Some fool in a boat. Choppers sent out to have a stern word ;)
Wonder if it's an Apache gunship? :D
nope, good old Huey:
Range uses Blackhawks.
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On the helium issues, problem isolated to ground side, want to switch vent valve to secondary mode and continue with count
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LV ready for terminal count, issues resolved waiting on new T-0
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Got a new T-0 update yet?
12:04pm Eastern I make it right now. Waiting on that boat. Vehicle is good to go.
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Big chunks of ice falling off of vehicle visible on the HD feed. :)
- Ed Kyle
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Still 39 minutes in the window.
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Range uses Blackhawks.
This would be more effective.
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another 5 minute hold extension
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Another five minutes on to the hold. Stupid boat.
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So I make that 12:09pm local for T-0. 35 mins of hold time used so far.
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16:13 ZULU is the new T-0.
12:13pm Local.
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Polling. Hoping the range is go this time.
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calling NASA CE, but no response,still in anomaly discussion, recommending delaying poll as much as possible
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Calling NASA CE! He's not there. Delay the poll.
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range is go
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NASA CE still working item, no go
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He's back "I heard you were calling". He's been busy on working "this item" (I assume the ground leak).
NO GO on coming out of the hold.
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range is go
Good work Blackhawks! :)
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Extend the hold another five minutes.
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That's 44 minutes of the window gone. 12:18pm local is the new T-0.
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That's 44 minutes of the window gone. 12:18pm local is the new T-0.
For those who aren't following, today's launch window ends at 12:43 EDT/16:43 UTC.
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leak on ground side, secondary valve unit now in use, problem solved, why the long discussion?
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discussion on engineering net on the helium leak, plenty of margin with red line monitoring ready to proceed, waiting on new t-0, booster cleared for flight
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Happy the ground leak is not going to be a problem for launch.
Vehicle ready to go.
Waiting for confirmed T-0 and polling.
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Per PAO, might extend one more time
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New T-0 12:25 local, 16:25 ZULU
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New T-0:
16:25 ZULU
12:25pm Eastern.
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Open Mic George, we can hear you moaning ;)
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1625z has been coordinator approved.
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Polling next.
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Polling launch team
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NASA Polling - GO.
L-10 minutes.
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All we need now is another boat.
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S/C to internal power, Juno is ready to go
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standing by to pick the count
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Ok folks. Chatter down for this business end now.
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l minus seven minutes
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polling
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Proceed with terminal count - GO.
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Go to launch!
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LC - permission to launch.
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range weather and final clear to launch: go!
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Juno confirmed on internal power, confirmed by someone we know ;D
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60 seconds to coming out of the BIH.
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L minus four minutes, out of the hold, terminal count proceeding
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Out of the BIH -
T-4 minutes and counting!
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Securing LO2 topping, Centaur at flight pressure, FTS internal
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FTS internal.
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vehicle on internal power, launch sequencer start, securing Centaur LH2
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Securing Centaur LH2 and LO2
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FTS count started, vent valves closed
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T-60 seconds
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go Atlas, go Centaur, go Juno!
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GO ATLAS! GO CENTAUR!
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LAUNCH!!
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First stage.
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Mach 1
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SRB throttle down.
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Just look at that beast go!!!
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Solids jettison
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Rolling. Closed loop steering.
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2.5 G throttling.
60 miles alt.
118 miles downrange.
6,000mph.
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plf sep
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Big Payload Fairing Jettison
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Working up to 5G throttling.
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Beautiful!
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BECO
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Centaur ignition
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Staging. 1-2 Sep. Second stage ignition
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Centaur ignition
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Took me a while to recognize that the rocket cam was seeing the rocket's own shadow. Way cool, Go Atlas! Go Centaur!
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LOS.
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Data back
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Took me a while to recognize that the rocket cam was seeing the rocket's own shadow. Way cool, Go Atlas! Go Centaur!
That's the first time I've seen that angle from RocketCam: from the booster, looking ahead at the 2nd stage during ignition.
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1 minute to MECO-1
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MECO-1
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MECO-1.
Centaur PTC turn/roll.
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centaur now rolling
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Centaur venting
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Centaur having a little dance during the coast.
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That video of the first stage firing retros while the Centaur speeds away is completely BAD ASS. Look at that RL-10 go!!!
I was like oh hell yes.
VR
RE327
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Wooo, Atlas V does it again! :)
The professionalism of the Atlas V team always amazes me. I look forward to the day when we can all watch an Atlas V send human beings into space, with hopefully the same level of excitement as Shuttle launches once gave us (especially if the payload happens to be a Dream Chaser)! :D
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My SD launch video
http://www.youtube.com/watch?v=oQCDdROyO5U
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That video of the first stage firing retros while the Centaur speeds away is completely BAD ASS. Look at that RL-10 go!!!
It reminded me of the escape pod launch at the beginning of Star Wars.
--N
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Took me a while to recognize that the rocket cam was seeing the rocket's own shadow. Way cool, Go Atlas! Go Centaur!
That's the first time I've seen that angle from RocketCam: from the booster, looking ahead at the 2nd stage during ignition.
That confused me too. It wasn't until after Centaur sep and MEI that I realised the camera was looking forwards and the outgassing I had seen were the Centaur's RCS firing.
I was very impressed at the way the vehicle went off the pad; Faster than anything except OSC's LVs. Those five SRBs make a lot of difference to the view!
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Half way through the coast phase.
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Clouds are the Enemy (http://www.gather.com/viewImage.action?fileId=3096224747056996).
Great launch though, I did like seeing fairing sep on video, usually they cut off just before that happens.
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Nice launch! Good job ULA! :-)
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There's an object that can be seen in the forward-looking rocketcam view after Centaur separates, it looks non-roundish. Could it be the Moon?
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Wow, that was an epic replay shot from a tracking camera of the solids separating!!!
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Patrick camera is just way too cool
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Wow, that was an epic replay shot from a tracking camera of the solids separating!!!
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what was that sharp jet venting right before shroud separation?
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Great way to wake up. Left NASA TV up on my Roku box so woke up and just turned on the TV.
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what was that sharp jet venting right before shroud separation?
Centaur H2 vent IIRC.
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something got blown away from that ground camera angle. Perhaps a light on a pole or something...a few pieces went dancing through the air.
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end of replays, all for me
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Nine minute burn
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Wow...look at Apogee go!
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A Q re: the Centaur... Does the RL-10 not gimble? Why are there so many small thrusters firing?
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Loving the thrusters.
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A Q re: the Centaur... Does the RL-10 not gimble? Why are there so many small thrusters firing?
It gimbals, but only controls pitch and yaw. Roll control thrusters are needed. The rest of the thrusters are for attitude control during coast phases. Those are probably doing "thermal conditioning firing" while the settling thrusters right now appear to have done a hydrazine burnoff to lower the mass of the stage.
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A Q re: the Centaur... Does the RL-10 not gimble? Why are there so many small thrusters firing?
Something about a hydrogen burn-off sequence.
Hydrazine - the monopropellant the centaur RCS uses. Presumably now that coast and MES-2 are done, they are ditching unneeded propellant to save weight.
I haven't seen this before, is this new?
-N
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0.95G acceleration.
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Thanks, ugordan.
Apogee just passed 100000! :)
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120 seconds to MECO-2.
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Centaur just went >1 on eccentricity.
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60 seconds to MECO-2.
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MECO-2.
Attitude change to S/C Sep.
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Centaur just went >1 on eccentricity.
A really important stat when you want to go BEO . . . ;)
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It looks like OMS assist on STS. Probably has the same effect.
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It's like a Centaur RPM.
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So they want to to spacecraft separation facing down towards Australia? For better comms?
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60 seconds to sep. Spin up next
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There was talk of 3 rocketcams onboard and video over Australia if I head correctly. We've so far seen only the cameras on the CCB. Is there really a 3rd camera on the Centaur at all?
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Is the CGI on NASA TV generated by actual telemetry data or is it simply a scripted animation?
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It's like a Centaur RPM.
With all this maneuvering (dancing), I think Centaur is trying to get on DWTS...
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Spinning!
And S/C Sep! Which they didn't show....
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Congradulations to all the teams!! :)
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Is the CGI on NASA TV generated by actual telemetry data or is it simply a scripted animation?
Usually live, based on telemetry data. There's a caption on-screen to the upper right that generally says whether the CGI is live or not.
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http://www.youtube.com/watch?v=EAMTksyLz_k
http://www.youtube.com/watch?v=oaYGy_57qSk
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Congrats to all concerned, ULA, NASA, JPL, etc :)
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Is the CGI on NASA TV generated by actual telemetry data or is it simply a scripted animation?
Usually live, based on telemetry data. There's a caption on-screen to the upper right that generally says whether the CGI is live or not.
important to note that the software is STK:
http://forum.nasaspaceflight.com/index.php?topic=26298.0
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That was a great launch! Well done ULA ad NASA! Spectacular views and Juno is on its way! Wonderful.
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Don't forget folks, there's another one later today, Ariane 5 ECA's launch.
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So they want to to spacecraft separation facing down towards Australia? For better comms?
I'm also curious why the probe is faced down when released. Also, does anyone have a nice graph on the flight path Juno will take to Jupiter? I found a wikipedia image, but it wasn't very useful.
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Great launch and great Coverage Chris.
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I'm also curious why the probe is faced down when released.
Could be orienting the s/c for solar arrays facing the sun.
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Solar arrays should be deploying now.
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So they want to to spacecraft separation facing down towards Australia? For better comms?
I'm also curious why the probe is faced down when released. Also, does anyone have a nice graph on the flight path Juno will take to Jupiter? I found a wikipedia image, but it wasn't very useful.
http://www.nasa.gov/images/content/576049main_JunoCruiseTraj_02.22.11.jpg
(http://www.nasa.gov/images/content/576049main_JunoCruiseTraj_02.22.11.jpg)
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Don't forget folks, there's another one later today, Ariane 5 ECA's launch.
Oooh, I had forgot about that one! I'm really making an effort to watch unmanned launches post-Shuttle - I need to satisfy my addiction to chemical propulsion. ;)
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I watched the launch. Happy to see it all went 100% well and successful and they put Juno out its way to Jupiter and beyond.
No excitement here while watching the launch. No excitement at all.
:-(
The Space Shuttles haunt me.
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Solar arrays should be deploying now.
Good point...one thing to celebrate a successful launch, but still need to hear about a healthy Juno s/c...
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Coming up on 40 minutes to S/C Comm acquisition.
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Fantastic launch, and glorious coverage by NASA TV. Well done everyone involved.
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Solar array deployment should be complete.
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Just another Juno question: Is it a coast ride from here on or will there bet yet another burn coming up? Does Juno has a Star kick motor? (I saw this small engine bell underneath Juno - but that doesn't appear like a Star to me..)
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And don't forget, we'll be following this mission in the new unmanned area...which I'll link up tomorrow when we open the area.
We'll stay on this thread for now.
And here's post-launch revision of William Graham's absolutely superb overview article:
http://www.nasaspaceflight.com/2011/08/ula-atlasv-nasa-juno-jupiter/
I know the forum isn't the main driver to the news site, but it's only on 44,000 reads, so get your eyeballs on it, pronto :)
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Just another Juno question: Is it a coast ride from here on or will there bet yet another burn coming up? Does Juno has a Star kick motor? (I saw this small engine bell underneath Juno - but that doesn't appear like a Star to me..)
This is it as far as initial Earth escape injection is concerned. The main engine will be used for deep space maneuvers, TCMs and Jupiter orbit insertion.
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ULA presser. PAO Jessica getting excited with the e-mail header "Beautiful launch!" - Chris likes that! :)
United Launch Alliance Successfully Launches Juno Spacecraft on
Five-Year Journey to Study Jupiter
Cape Canaveral AFS, Fla., (Aug. 5, 2011) - A United Launch Alliance Atlas V rocket carrying the Juno spacecraft for NASA lifted off from Space Launch Complex-41 here at 12:25 p.m. EDT today.
“Congratulations to the entire team for successfully launching Juno on its five-year interplanetary journey to Jupiter,” said Jim Sponnick, ULA vice president, Mission Operations. “The ULA team is very proud to serve a critical role in delivering one-of-a-kind NASA payloads in support of the global science community and we look forward to the scientific discoveries from the Juno mission.”
The launch of the Juno mission marks the second of five NASA missions scheduled to launch this year on ULA vehicles within a six month timeframe. “This six-month launch campaign for NASA is unprecedented not only for its reach across our solar system, but also for the tempo and precision required together with our NASA Launch Services Program customer and their mission customers in order to achieve successful execution,” said Sponnick.
This mission was launched aboard an Atlas V 551 vehicle configuration, which includes a 5-meter diameter RUAG Space payload fairing. The booster for this mission was powered by the RD AMROSS RD-180 engine along with five Aerojet solid rocket motors. The Centaur upper stage was powered by a single Pratt & Whitney Rocketdyne RL-10A engine.
Juno will improve our understanding of our solar system’s beginnings by revealing the origin and evolution of Jupiter. After a five-year journey, Juno will spend a year and 33 orbits studying many scientific aspects of the largest planet in our solar system. Specifically, Juno will determine how much water is in the atmosphere, measure composition, temperature and cloud motions, map the magnetic and gravity fields, as well as explore and study Jupiter’s magnetosphere.
ULA's next launch is the Delta II GRAIL mission for NASA currently scheduled for Sept. 8, 2011 from Space Launch Complex-17 at Cape Canaveral Air Force Station, Fla. Following the GRAIL launch, ULA is scheduled to launch another Delta II in October with an advanced weather satellite and then an Atlas V in November with the Mars Science Laboratory, both for NASA.
ULA program management, engineering, test and mission support functions are headquartered in Denver, Colo. Manufacturing, assembly and integration operations are located at Decatur, Ala., Harlingen, Texas, San Diego, Calif. Launch operations are located at Cape Canaveral AFS, Fla., and Vandenberg AFB, Calif.
For more information on the ULA joint venture, visit the ULA Web site at www.ulalaunch.com, or call the ULA Launch Hotline at 1-877-ULA-4321 (852-4321).
---
Cape Canaveral Air Force Station, Fla. (Aug. 5, 2011) – A United Launch Alliance Atlas V rocket blasts off from Space Launch Complex-41 at 12:25 p.m. EDT with the Juno spacecraft for NASA. The launch of the Juno mission marks the second of five NASA missions scheduled to launch this year on ULA vehicles within a six month timeframe. Juno will improve our understanding of our solar system’s beginnings by revealing the origin and evolution of Jupiter. After a five-year journey, Juno will spend a year and 33 orbits studying many scientific aspects of the largest planet in our solar system.
Photo by Pat Corkery, United Launch Alliance.
Nice!:
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Apparently the Launch Blog on the NASA/Juno site is not covering the upcoming S/C events.
http://www.nasa.gov/mission_pages/juno/launch/launch_blog.html
Also it appears as though the Juno website
http://missionjuno.swri.edu/Home
is either down or not covering upcoming S/C events.
Does anyone have a source for further mission updates?
(about 25 to signal acquisition)
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And don't forget, we'll be following this mission in the new unmanned area...which I'll link up tomorrow when we open the area.
We'll stay on this thread for now.
And here's post-launch revision of William Graham's absolutely superb overview article:
http://www.nasaspaceflight.com/2011/08/ula-atlasv-nasa-juno-jupiter/
I know the forum isn't the main driver to the news site, but it's only on 44,000 reads, so get your eyeballs on it, pronto :)
Superb article by William.
I remember you said one of the SLS articles had gone over 100,000 in a day, but to see you write "only 44,000", this site is a beast, with boosters ;D
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Don't forget folks, there's another one later today, Ariane 5 ECA's launch.
Oooh, I had forgot about that one! I'm really making an effort to watch unmanned launches post-Shuttle - I need to satisfy my addiction to chemical propulsion. ;)
Spoke too soon, they've called a delay, again.
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"The Juno team will discuss today's successful liftoff of the Juno spacecraft aboard an Atlas V rocket during a news conference to begin at about 2:30 p.m. EDT."
Should be on NASA TV.
By 2:30 they should have gotten COMM and the first S/C status poll, two way comm may also have been established.
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S/C AT COMM ATT now.
First S/C status poll in 9 min.
Where is our DSN contact? :)
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Juno Launch
http://www.space-multimedia.nl.eu.org/index.php?option=com_content&view=article&id=7039
Juno Launch Replays
http://www.space-multimedia.nl.eu.org/index.php?option=com_content&view=article&id=7040
Juno Post-Launch Interview
http://www.space-multimedia.nl.eu.org/index.php?option=com_content&view=article&id=7041
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Spacecraft status poll should be underway now.
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Should be establishing two way communication by now.
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http://www.nasa.gov/mission_pages/juno/news/juno20110805.html
Confirmed. Solar arrays deployed. GRATS!
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*claps* Congratulations!
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wOOt!
News conference appears to be delayed so it's great to hear that communications are established.
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Keeping an eye here for S/C status/health updates; SFN reported seeing charge on the batteries a while back, so maybe a little post-launch celebration getting in the way earlier. :) Guessing the pace slackens a bit from here...
http://mobile.twitter.com/NASAJuno
Also see the post-launch news conf on the SFN Livestream slated for 2:45 pm Eastern.
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News conference in one minute according to NASA TV.
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"Happy" news conference on.
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Solar is working and charging batteries, everything going well.
Liftoff 12:25, sep at 1:18 EDT.
DSN working great, acquired 24 seconds after spacecraft sep.
Spin-up was nominal.
Stable, spinning, power-positive, commandable.
Batteries only dropped to 90% during ascent.
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Nominal!
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Centaur just went >1 on eccentricity.
A really important stat when you want to go BEO . . . ;)
You gotta give it to them ULA guys. They can be somewhat eccentric sometimes, but you can forgive them for resorting to hyperbola when the occasion merits it... ;)
On a more serious note, great launch, glad to hear the spacecraft seems to be doing well. Great job ULA!
~Jon
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Solar is working and charging batteries, everything going well.
Liftoff 12:25, sep at 1:18 EDT.
DSN working great, acquired 24 seconds after spacecraft sep.
Spin-up was nominal.
Stable, spinning, power-positive, commandable.
Batteries only dropped to 90% during ascent.
AWESOME STUFF.
Congrats to the teams!
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They were just talking about the planetary decadal survey. Juno stems from a recommendation in the 2001 decadal survey for a "Jupiter Orbiter With Probes" as one of the candidates for the New Frontiers program. Juno was selected as the second New Frontiers mission.
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Some fantastic hi-res, close-up launch photos are here:
http://www.flickr.com/photos/nasahqphoto
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RELEASE: 11-257
NASA'S JUNO SPACECRAFT LAUNCHES TO JUPITER
CAPE CANAVERAL, Fla. -- NASA's solar-powered Juno spacecraft lifted
off from Cape Canaveral Air Force Station at 12:25 p.m. EDT Friday to
begin a five-year journey to Jupiter.
Juno's detailed study of the largest planet in our solar system will
help reveal Jupiter's origin and evolution. As the archetype of giant
gas planets, Jupiter can help scientists understand the origin of our
solar system and learn more about planetary systems around other
stars.
"Today, with the launch of the Juno spacecraft, NASA began a journey
to yet another new frontier," NASA Administrator Charles Bolden said.
"The future of exploration includes cutting-edge science like this to
help us better understand our solar system and an ever-increasing
array of challenging destinations."
After Juno's launch aboard an Atlas V rocket, mission controllers now
await telemetry from the spacecraft indicating it has achieved its
proper orientation, and that its massive solar arrays, the biggest on
any NASA deep-space probe, have deployed and are generating power.
"We are on our way, and early indications show we are on our planned
trajectory," said Jan Chodas, Juno project manager at NASA's Jet
Propulsion Laboratory (JPL) in Pasadena, Calif. "We will know more
about Juno's status in a couple hours after its radios are energized
and the signal is acquired by the Deep Space Network antennas at
Canberra."
Juno will cover the distance from Earth to the moon (about 250,000
miles or 402,236 kilometers) in less than one day's time. It will
take another five years and 1,740 million miles (2,800 million
kilometers) to complete the journey to Jupiter. The spacecraft will
orbit the planet's poles 33 times and use its collection of eight
science instruments to probe beneath the gas giant's obscuring cloud
cover to learn more about its origins, structure, atmosphere and
magnetosphere, and look for a potential solid planetary core.
With four large moons and many smaller moons, Jupiter forms its own
miniature solar system. Its composition resembles a star's, and if it
had been about 80 times more massive, the planet could have become a
star instead.
"Jupiter is the Rosetta Stone of our solar system," said Scott Bolton,
Juno's principal investigator from the Southwest Research Institute
in San Antonio. "It is by far the oldest planet, contains more
material than all the other planets, asteroids and comets combined
and carries deep inside it the story of not only the solar system but
of us. Juno is going there as our emissary -- to interpret what
Jupiter has to say."
Juno's name comes from Greek and Roman mythology. The god Jupiter drew
a veil of clouds around himself to hide his mischief, and his wife,
the goddess Juno, was able to peer through the clouds and reveal
Jupiter's true nature.
The NASA Deep Space Network, or DSN, is an international network of
antennas that supports interplanetary spacecraft missions and radio
and radar astronomy observations for the exploration of the solar
system and the universe. The network also supports selected
Earth-orbiting missions.
NASA's Jet Propulsion Laboratory, Pasadena, Calif., manages the Juno
mission for the principal investigator, Scott Bolton, of Southwest
Research Institute in San Antonio. The Juno mission is part of the
New Frontiers Program managed at NASA's Marshall Space Flight Center
in Huntsville, Ala. Lockheed Martin Space Systems, Denver, built the
spacecraft. Launch management for the mission is the responsibility
of NASA's Launch Services Program at the Kennedy Space Center in
Florida.
For more information about Juno, visit:
http://www.nasa.gov/juno
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All...
I was onsite and barged my way to the front of the lawn for the launch.
The speakers aren't up to it, and the intermittent audio from the launch control and "interpreter" left us confused as to why there were delays and for how long. Sitting in 90F heat for nearly 2 hrs has left me dehydrated :(
But I'm glad I made it after 30 years, and thanks to you all for explaining what was going on.
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resorting to hyperbola when the occasion merits it... ;)
~Jon
Outstanding quote! Thinking of making it my sig line if you don't mind...
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You gotta give it to them ULA guys. They can be somewhat eccentric sometimes, but you can forgive them for resorting to hyperbola when the occasion merits it... ;)
That works as long as no one thinks it's a load of old hyperbolics ;D
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All...
I was onsite and barged my way to the front of the lawn for the launch.
The speakers aren't up to it, and the intermittent audio from the launch control and "interpreter" left us confused as to why there were delays and for how long. Sitting in 90F heat for nearly 2 hrs has left me dehydrated :(
But I'm glad I made it after 30 years, and thanks to you all for explaining what was going on.
I was told that people had the same problem at the press site for the last shuttle launch. Best story I heard: during the hold, a British guy on site wondered what was going on and called his wife--watching it on TV in England--to find out. She said "I can see you talking on your phone next to the clock!"
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All...
I was onsite and barged my way to the front of the lawn for the launch.
The speakers aren't up to it, and the intermittent audio from the launch control and "interpreter" left us confused as to why there were delays and for how long. Sitting in 90F heat for nearly 2 hrs has left me dehydrated :(
But I'm glad I made it after 30 years, and thanks to you all for explaining what was going on.
I can imagine that as they kept adding five minute extensions, without really noting the new T-0.
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They really need to get a technical person, trained not to say eyetar and proprietary (and controversial) things, to provide color commentary of what's going on. But then PAO would have nothing to do. Oh, wait....
Dang, that could actually be cool now that I think about it. Do it like a NASCAR race with props and parts and stuff. Schematic to explain how the gases and liquids are loaded. The basics are textbook, nothing sensitive.
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RELEASE: 11-257
NASA'S JUNO SPACECRAFT LAUNCHES TO JUPITER
CAPE CANAVERAL, Fla. -- NASA's solar-powered Juno spacecraft lifted
off from Cape Canaveral Air Force Station at 12:25 p.m. EDT Friday to
begin a five-year journey to Jupiter.
Juno will cover the distance from Earth to the moon (about 250,000
miles or 402,236 kilometers) in less than one day's time. It will
take another five years and 1,740 million miles (2,800 million
kilometers) to complete the journey to Jupiter.
This is a very interesting thought that got me thinking. Shrinking the time we can visit the moon and back should and would be a worth while goal.
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That Ben Cooper fella's taking a few snaps of the launch, which aren't too bad....
...............HA, Check these out and fall off your frakking chair! ;D
http://www.launchphotography.com/Juno.html
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Down near the bottom of his page Cooper shows an image that captured the moment of liftoff. (Juno_12.jpg) It was clearly taken after main engine ignition but apparently before vehicle motion. The T-0 umbilicals are disconnected and appear to be floating in air.... Does that mean the solids had also been lit? Is it truly past the point of no return while still motionless on the pad?
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The abrupt pitchover of AV-029 reminds me of a Zenit launch............
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And here's post-launch revision of William Graham's absolutely superb overview article:
http://www.nasaspaceflight.com/2011/08/ula-atlasv-nasa-juno-jupiter/
I know the forum isn't the main driver to the news site, but it's only on 44,000 reads, so get your eyeballs on it, pronto :)
Quite the retrospective! Great one William!
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Very nice launch today. Here's a shot I took from the Saturn V center.
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Lockheed Martin-Built Juno Spacecraft Lifts Off for Six Year Voyage to Jupiter
5-Aug-2011 4:48 PM
NASA Mission to Explore the Origins of Jupiter
CAPE CANAVERAL, Fla.,
NASA's Juno spacecraft, designed and built by Lockheed Martin (NYSE: LMT), was successfully launched this morning from Cape Canaveral Air Force Station at 12:25 p.m. EDT aboard an Atlas V 551 rocket provided by United Launch Alliance.
Five minutes after separation from the Centaur upper stage, the Juno spacecraft deployed its three large solar arrays and started producing power. Initial contact with the spacecraft was obtained by the mission's Flight Operations team at Lockheed Martin Space Systems Company's facility near Denver.
"Early telemetry from the spacecraft indicated that all major subsystems are healthy," said Tim Gasparrini, Juno spacecraft program manager at Lockheed Martin Space Systems Company. "Launch and initial acquisition is the first of our critical events, and they couldn't have gone smoother. Our team is thrilled that we're on our way to Jupiter to help NASA and the science community understand the origins of our solar system."
Scheduled to arrive at Jupiter in July 2016, the spacecraft will spend a little more than a year orbiting over the poles of the gas giant while studying the planet's origins, structure, atmosphere and magnetosphere.
"Today's successful launch is a direct reflection of the dedication and hard work the entire Juno team has given to this program over the past six years," said Jim Crocker, vice president and general manager of Sensing and Exploration Systems at Lockheed Martin Space Systems Company. "Our team and I are extremely proud to deliver mission success for such longstanding customers as NASA and the Jet Propulsion Laboratory."
NASA's Jet Propulsion Laboratory, Pasadena, Calif. manages the Juno mission for the principal investigator, Scott Bolton, of Southwest Research Institute at San Antonio. The Juno mission is part of the New Frontiers Program managed at NASA's Marshall Space Flight Center in Huntsville, Ala. Lockheed Martin Space Systems, Denver, is building the spacecraft. The Italian Space Agency in Rome is contributing an infrared spectrometer instrument and a portion of the radio science experiment. Launch management for the mission is the responsibility of NASA's Launch Services Program at the Kennedy Space Center in Florida. JPL is a division of the California Institute of Technology in Pasadena.
Headquartered in Bethesda, Md., Lockheed Martin is a global security company that employs about 126,000 people worldwide and is principally engaged in the research, design, development, manufacture, integration and sustainment of advanced technology systems, products and services. The Corporation's 2010 sales from continuing operations were $45.8 billion.
More information on the Juno mission can be found at:
NASA Juno site: http://www.nasa.gov/mission_pages/juno/main/index.html
Juno mission site: http://missionjuno.swri.edu/
Lockheed Martin Juno site: http://www.lockheedmartin.com/juno
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Dang, that could actually be cool now that I think about it. Do it like a NASCAR race with props and parts and stuff. Schematic to explain how the gases and liquids are loaded. The basics are textbook, nothing sensitive.
Should NSF start thinking about making our own show? ;)
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Saw this from the Saturn 5 centre and it was really amazing. It was my first launch and I've never really appreciated the difference in the speed our sound / light. It leaped off the launch pad and started climbing in complete silence and I was like huh this is quiet then you hear this incredible thundering / roaring sound and all the windows started shaking.
I stayed till MECO was confirmed and there were only about 10 of us still outside :D
Thanks to everyone who helped me with viewing advice and I missed NSF during the hold extensions, all I could make out from the speakers was a heater issue on the cenatur, and something helium related !
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Going to add some comments, since I was not "available' yesterday and my head is still hurting
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There was talk of 3 rocketcams onboard and video over Australia if I head correctly. We've so far seen only the cameras on the CCB. Is there really a 3rd camera on the Centaur at all?
There was a third one for spacecraft separation but realtime relay from Australia was not available.
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So they want to to spacecraft separation facing down towards Australia? For better comms?
I'm also curious why the probe is faced down when released. Also, does anyone have a nice graph on the flight path Juno will take to Jupiter? I found a wikipedia image, but it wasn't very useful.
It was pointing towards the sun
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Wooo, Atlas V does it again! :)
The professionalism of the Atlas V team always amazes me...........
My comment to this one with be a little controversial.
I agree with this post and I that is why I had an issue with Mike Leinbach stating that he was working with the best launch team in the world. One of the best would have been more appropriate.
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Thought that this might be useful
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Down near the bottom of his page Cooper shows an image that captured the moment of liftoff. (Juno_12.jpg) It was clearly taken after main engine ignition but apparently before vehicle motion. The T-0 umbilicals are disconnected and appear to be floating in air.... Does that mean the solids had also been lit? Is it truly past the point of no return while still motionless on the pad?
Solids were lit and the vehicle had lifted off.
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Yea, that photo is taken a fraction of a second after SRB ignition. You can see the more forceful SRB blast going out the flame trench.
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I thought I'd post up a few of the photos our launch pad remote camera captured of the Atlas 5 Juno launch. These were obtained due to the great work of ARES Institute's (http://www.aresinstitute.org) photographer Mike Killian. Fortunately, the camera had enough space on the SD card to keep shooting even with the launch delay. Mike used an intervelometer, rather than an acoustic or light trigger, so it started snapping photos at the beginning of the window and kept shooting until the card was filled up. I'm posting them without watermarks, but please just give credit to Mike Killian / ARES Institute, Inc.
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Thought that this might be useful
Ah ha! Very nice :)
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Our photographer Mike Killian went to Playalinda Beach a few miles north of Cape Canaveral/KSC to shoot photos of the launch of Juno from the beach. I think they came out very good, with the waves, water and beachgoers stopping to watch the launch. The photos aren't watermarked but please give credit to Mike Killian / ARES Institute, Inc. http://www.aresinstitute.org.
I hope everyone enjoys these photos... it's why we do it!
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I was on the roof of the Vehicle Assembly Building at KSC to shoot video of the launch of the ULA Atlas 5 with NASA's Juno spacecraft. For an appreciation of this, one should keep in mind that we were up there, 525 above the ground, for a couple hours in the summer Florida Sun. The outside temperature was over 90 degress but on the roof, the heat index was well over 100, probably over 110. The roof is painted white to reflect the Sun and help keep the inside of the VAB cool, so we had the Sun beating down on us from above and from below. And I had exactly ONE bottle of water. I'm sure I lost a few pounds of water weight yesterday.
The video starts out with me panning the view over the landscape of KSC/CCAFS, including LC-39B which is now completely without any service structures on it. Then the last minute of the Juno countdown and launch.
Feel free to pass this around. Credit is to Matthew Travis / ARES Institute, Inc. http://www.aresinstitute.org
Enjoy!
http://www.youtube.com/watch?v=06iBzsiCuWk
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There was a third one for spacecraft separation but realtime relay from Australia was not available.
Does that mean there was signal received on the ground in Australia, just no live relay?
BTW, wasn't the spacecraft in the darkness then anyway?
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Great video. Sounds like an interesting experience.
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There was a third one for spacecraft separation but realtime relay from Australia was not available.
Does that mean there was signal received on the ground in Australia, just no live relay?
BTW, wasn't the spacecraft in the darkness then anyway?
Yes and there was a light with the camera.
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I was on the roof of the Vehicle Assembly Building at KSC to shoot video of the launch of the ULA Atlas 5 with NASA's Juno spacecraft. For an appreciation of this, one should keep in mind that we were up there, 525 above the ground, for a couple hours in the summer Florida Sun. The outside temperature was over 90 degress but on the roof, the heat index was well over 100, probably over 110. The roof is painted white to reflect the Sun and help keep the inside of the VAB cool, so we had the Sun beating down on us from above and from below. And I had exactly ONE bottle of water. I'm sure I lost a few pounds of water weight yesterday.
So... is there a bathroom up there?
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Ok folks, on to the spacecraft's own update thread on the new unmanned subsection:
http://forum.nasaspaceflight.com/index.php?board=49.0
There's a few nice Juno-specific updates in this thread, so feel free to copy over.
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I hope everyone enjoys these photos... it's why we do it!
Nice shots, sir. People + Beach + Rocket flying toward success is inspiring to any launch team.
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It was clearly taken after main engine ignition but apparently before vehicle motion. The T-0 umbilicals are disconnected and appear to be floating in air.... Does that mean the solids had also been lit? Is it truly past the point of no return while still motionless on the pad?
Solids were lit and the vehicle had lifted off.
IIRC, for Atlas, TZero is launch commit (all health checks passed), but the solids light after that and vehicle motion (T/W>1) is after that. That's the most logical TZero I can think of out of several US and foreign vehicles. Even if it hasn't moved, if it can't be stopped, then the mission has started.
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"Happy" news conference on.
Does this post-launch news conference exist online anywhere? John44 hasn't posted it, and I don't see it in NASA's Youtube or Ustream collections.
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Does this post-launch news conference exist online anywhere? John44 hasn't posted it, and I don't see it in NASA's Youtube or Ustream collections.
You're not looking hard enough. http://www.youtube.com/watch?v=OXIqVXSZUyI
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Ahhh, SpaceVidsNet. Instead of checking the usual places/users, I should have just searched Youtube for "Juno post launch". Thanks ugordan.
EDIT: Ken Kremer asked a question that gave Scott Bolton an opportunity to provide an excellent story on the background of Juno, how the mission itself came into being. Highly recommended viewing! The timecode to fast forward to is 18m20s.
How do you suppress the auto-embedding of Youtube videos, and just provide the URL? I'm linking below to the #t=18m20s point in the video, but the embedder doesn't recognize it.
http://www.youtube.com/watch?v=OXIqVXSZUyI#t=18m20s
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Just post the URL, the forum software does the rest.
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How do you suppress the auto-embedding of Youtube videos, and just provide the URL? I'm linking below to the #t=18m20s point in the video, but the embedder doesn't recognize it.
http://www.youtube.com/watch?v=OXIqVXSZUyI#t=18m20s
Paste the URL and insert empty formatting tags such as [ b][ /b] somewhere inside the beginning of the address. I put it after the colon character in the above URL. This will break its address recognition.
The habit of this forum automatically embedding youtube videos is quite annoying, frankly.
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Some fool in a boat. Choppers sent out to have a stern word ;)
Article about these range clearing choppers...
Rescue reservists support successful rocket launch
Posted 8/8/2011
see:
http://www.af.mil/news/story.asp?id=123267102
by Airman 1st Class Natasha Dowridge
920th Rescue Wing Public Affairs
8/8/2011 - PATRICK AIR FORCE BASE, Fla. (AFNS) -- Air Force Reservists from the 920th Rescue Wing here supported the successful United Launch Alliance Atlas V launch August 6. The Atlas carried the Juno spacecraft for NASA.
Juno launched from Space Launch Complex 41, Cape Canaveral Air Force Station, Fla., and is tasked with investigating the formation, evolution and structure of the planet Jupiter from an elliptical orbit.
Airmen with the 920th RQW provided search-and-rescue support for NASA's manned spaceflight missions from the Mercury project in 1961 through the space shuttle program, which ended in July. While there are currently no missions requiring astronaut search-and-rescue operations, the 920th RWQ continues to support NASA's rocket launch missions.
Rescue Wing Airmen perform range-clearing operations using their HH-60G Pave Hawk helicopters to clear a 2,000-square-mile area of the Eastern Range, a launch area that extends east of the Atlantic Ocean for all Space Coast rocket launches. By providing range clearing, they ensure mariners keep a safe distance from the rocket launch path and out of harm's way should the rocket dismantle.
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... should the rocket dismantle.
I like the author's word choice :D
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... should the rocket dismantle.
I like the author's word choice :D
sorta like RUD or Engine rich exhaust, eh? ;D
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EDIT: Ken Kremer asked a question that gave Scott Bolton an opportunity to provide an excellent story on the background of Juno, how the mission itself came into being. Highly recommended viewing! The timecode to fast forward to is 18m20s.
Thanks, ChrisC and ugordon -- that was a interesting glimpse of the history.
-Alex
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ULA launch highlights video:
http://www.youtube.com/watch?v=mYtDZ5Btp-A
Interesting copyright notice at the end "Footage courtesy of NASA". Does NASA actually own the tracking assets and onboard footage for their missions when its ULA who actually handles the launch (and presumably pays range fees)?
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ULA launch highlights video:
Interesting copyright notice at the end "Footage courtesy of NASA". Does NASA actually own the tracking assets and onboard footage for their missions when its ULA who actually handles the launch (and presumably pays range fees)?
Interesting for me is that the video chronology is slightly wrong. You can see the venting of the payload fairing or whatever it is (1:49 onwards) after the separation of the payload fairing (already at 1:41).
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Interesting for me is that the video chronology is slightly wrong. You can see the venting of the payload fairing or whatever it is (1:49 onwards) after the separation of the payload fairing (already at 1:41).
The venting from 1:49 is from the fuel tank, not the payload fairing.
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Interesting for me is that the video chronology is slightly wrong. You can see the venting of the payload fairing or whatever it is (1:49 onwards) after the separation of the payload fairing (already at 1:41).
The venting from 1:49 is from the fuel tank, not the payload fairing.
OK - but you can clearly see that the pipe is separated together with the fairing at 1:41 (but of course, I am not an Atlas specialist).
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That's splitting hairs, the LH2 vent fin *is* connected to the fairing even though the gas obviously comes from Centaur's tank.
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Some fool in a boat. Choppers sent out to have a stern word ;)
Article about these range clearing choppers...
Rescue reservists support successful rocket launch
Odd bragging when they couldn't keep the SCO box clear. L2 note that they got an action at one of the reviews to get extra assets to do just that.
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That's splitting hairs, the LH2 vent fin *is* connected to the fairing even though the gas obviously comes from Centaur's tank.
Isn't this the "boost phase chilldown" of the RL10 engine? The gases might be passing through the engine nozzle at this point.
- Ed Kyle
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Although these diagrams are from the wider diameter Titan Centaur, like the Atlas V 5xx vehicle, the fairing encapsulates both the payload and the Centaur. Both systems should be fairly similar, if only for illustrative purposes.
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That's splitting hairs, the LH2 vent fin *is* connected to the fairing even though the gas obviously comes from Centaur's tank.
Isn't this the "boost phase chilldown" of the RL10 engine? The gases might be passing through the engine nozzle at this point.
- Ed Kyle
If you look carefully in the video, you'll see that's a different point of outgassing (lower down, somewhere around the interstage area) and only strengthens up shortly before BECO. From what I can see, the LH2 fin is venting the whole time, in one of the recent early evening launches it was readily visible from the ground.
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Click to animate
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That's cool Ron!
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Nice animations. Really like the rapid pitchover............
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There was a third one for spacecraft separation but realtime relay from Australia was not available.
Does that mean there was signal received on the ground in Australia, just no live relay?
BTW, wasn't the spacecraft in the darkness then anyway?
Yes and there was a light with the camera.
lesson learned: verify that recorder is on during downlink. I guess the only people who saw s/c sep were a few Australian techs monitoring the downlink...
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That's splitting hairs, the LH2 vent fin *is* connected to the fairing even though the gas obviously comes from Centaur's tank.
Isn't this the "boost phase chilldown" of the RL10 engine? The gases might be passing through the engine nozzle at this point.
- Ed Kyle
If you look carefully in the video, you'll see that's a different point of outgassing (lower down, somewhere around the interstage area) and only strengthens up shortly before BECO. From what I can see, the LH2 fin is venting the whole time, in one of the recent early evening launches it was readily visible from the ground.
Doesn't the Centaur RCS do some thermal conditioning burns as well, even while still attached?
-N
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There was a third one for spacecraft separation but realtime relay from Australia was not available.
Does that mean there was signal received on the ground in Australia, just no live relay?
BTW, wasn't the spacecraft in the darkness then anyway?
Yes and there was a light with the camera.
lesson learned: verify that recorder is on during downlink. I guess the only people who saw s/c sep were a few Australian techs monitoring the downlink...
Even if there was no live relay, they must have recorded it in Australia, I would imagine?
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No, and that was the thrust of my comment. The recorders were NOT turned on due to an oversight.
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Well, it was probably overexposed and non-spectacular, anyway...
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No, and that was the thrust of my comment. The recorders were NOT turned on due to an oversight.
Oh, it was probably recorded, but the tapes were placed in the same location as the Apollo 11 recordings.
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No, and that was the thrust of my comment. The recorders were NOT turned on due to an oversight.
Oh, it was probably recorded, but the tapes were placed in the same location as the Apollo 11 recordings.
Jim's attic?
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STATUS REPORT: ELV-081511
EXPENDABLE LAUNCH VEHICLE STATUS REPORT
Spacecraft: Juno
Launch Vehicle: Atlas V-551 (AV-029)
Launch Site: Cape Canaveral Air Force Station, Fla.
Launch Pad: Space Launch Complex 41
Launch Date: Aug. 5, 2011
The Juno spacecraft was launched successfully aboard the Atlas V
rocket on Aug. 5, 2011, at 12:25:00.146 p.m. EDT. The spacecraft is
in good shape and planned post-launch system verifications and
state-of-health checks are under way.
The solar-powered Juno spacecraft will orbit Jupiter's poles 33 times
to find out more about the gas giant's origins, structure, atmosphere
and magnetosphere.