Free Republic
Browse · Search
News/Activism
Topics · Post Article

Skip to comments.

Atlas 5 Live Launch Thread 11:42am PDT/2:42pm EDT
SpaceFlightNow.com ^

Posted on 05/04/2012 10:26:10 AM PDT by Jack Hydrazine

Rocket: Atlas 5
Payload: AEHF 2
Date: May 4, 2012
Window: 2:42 to 4:42 p.m. EDT (11:42 a.m. - 1:42 p.m. PDT)
Launch Site: SLC-41, Cape Canaveral, Florida

After helium purge problem kept the Atlas 5 rocket on the pad Thursday afternoon, a second launch attempt is getting underway today to deploy a sophisticated and critical communications spacecraft for the U.S. government.

The countdown clocks just began ticking, beginning a seven-hour sequence of work that will prepare the rocket, payload and ground systems for today's blastoff at 2:42 p.m. EDT (1842 GMT).

The day's two-hour launch window stretches to 4:42 p.m. EDT.

Here's a timeline of the countdown's key events:

HR:MM..Eastern...Event
T-6:20...7:42am...Countdown begins with rocket power up
T-5:30...8:32am...Weather briefing
T-4:55...9:07am...Start clearing assembly building area
T-4:20...9:42am...C-band tracking beacon testing
T-3:40..10:22am...S-band telemetry link checks
T-2:55..11:07am...Establish blast danger area roadblocks
T-2:20..11:42am...Weather briefing
T-2:15..11:47am...Clear the pad
T-2:00..12:02pm...T-120 minutes and holding (for 30min)
T-2:00..12:27pm...Launch conductor briefing to team
T-2:00..12:29pm...Readiness poll for fueling
T-2:00..12:32pm...Resume countdown
T-1:50..12:42pm...Centaur LOX transfer line chilldown
T-1:43..12:47pm...Begin Centaur liquid oxygen loading
T-1:30...1:02pm...Begin Atlas first stage LOX loading
T-1:25...1:07pm...Centaur LH2 transfer line chilldown
T-1:10...1:22pm...Centaur RL10 engine chilldown
T-1:02...1:30pm...Begin Centaur liquid hydrogen loading
T-0:40...1:52pm...FLight termination system final test
T-0:16...2:16pm...RD-180 engine fuel fill sequence
T-0:10...2:22pm...Weather briefing
T-0:04...2:28pm...T-4 minutes and holding (for 10min)
T-0:04...2:35pm...Readiness poll for launch
T-0:04...2:38pm...Resume countdown
T-0:00...2:42pm...LAUNCH


TOPICS: News/Current Events; US: Florida
KEYWORDS: atlas5; florida; launch; rocket

1 posted on 05/04/2012 10:26:22 AM PDT by Jack Hydrazine
[ Post Reply | Private Reply | View Replies]

To: Jack Hydrazine

$2 BILLION satellite. That’s some serious satellite! God speed!


2 posted on 05/04/2012 10:28:44 AM PDT by GeorgeWashingtonsGhost
[ Post Reply | Private Reply | To 1 | View Replies]

To: Jack Hydrazine

You can watch it at the link above or at the link below.

http://www.ulalaunch.com/site/pages/Webcast.shtml


3 posted on 05/04/2012 10:29:02 AM PDT by Jack Hydrazine (It's the end of the world as we know it and I feel fine!)
[ Post Reply | Private Reply | To 1 | View Replies]

To: Jack Hydrazine
Or here:

http://www.livestream.com/spaceflightnow

Going up at 2:42 EDT.

4 posted on 05/04/2012 10:38:10 AM PDT by GeorgeWashingtonsGhost
[ Post Reply | Private Reply | To 3 | View Replies]

My photo from the last Atlas launch...


5 posted on 05/04/2012 10:53:48 AM PDT by mcmuffin ("Wanting your country back is not the same thing as working to take it back.")
[ Post Reply | Private Reply | To 1 | View Replies]

To: Jack Hydrazine; KevinDavis

Awesome! Will this be televised?


6 posted on 05/04/2012 10:56:21 AM PDT by wastedyears (There can be only one.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: Jack Hydrazine

Oh sweet I didn’t see that before posting. Thanks!


7 posted on 05/04/2012 10:57:01 AM PDT by wastedyears (There can be only one.)
[ Post Reply | Private Reply | To 3 | View Replies]

To: Jack Hydrazine

Is this the basic configuration of the Atlas V?


8 posted on 05/04/2012 10:57:11 AM PDT by Red_Devil 232 (VietVet - USMC All Ready On The Right? All Ready On The Left? All Ready On The Firing Line!)
[ Post Reply | Private Reply | To 1 | View Replies]

To: Red_Devil 232

Still go for launch with 15 minutes to go... awesome video links (see above).


9 posted on 05/04/2012 11:26:37 AM PDT by alancarp (Liberals are all for shared pain... until they're included in the pain group.)
[ Post Reply | Private Reply | To 8 | View Replies]

To: Red_Devil 232
It's an Atlas V 531, one of 10 normal configurations (20 if there were ever a double Centaur flight):

It breaks down to:
5 = 5 meter diameter payload fairing.
3 = 3 SRBs
1 = Single-engine Centaur upper stage

10 posted on 05/04/2012 11:27:08 AM PDT by jboot
[ Post Reply | Private Reply | To 8 | View Replies]

To: Jack Hydrazine
You can watch it at the link above or at the link below

Nah. I'll just go watch from the backyard.

11 posted on 05/04/2012 11:33:32 AM PDT by N. Theknow (Kennedys=Can't drive, can't ski, can't fly, can't skipper a boat, but they know what's best for you.)
[ Post Reply | Private Reply | To 3 | View Replies]

To: jboot

Interesting that there’s 3 SRB’s and yet they’re not symmetrically arranged. That’s a new one on me.


12 posted on 05/04/2012 11:35:15 AM PDT by MarineBrat (Better dead than red!)
[ Post Reply | Private Reply | To 10 | View Replies]

To: jboot

Still a bummer we have to purchase the main engines from Russia.. (RD-180) Bad azz engines for sure.


13 posted on 05/04/2012 11:35:59 AM PDT by GeorgeWashingtonsGhost
[ Post Reply | Private Reply | To 10 | View Replies]

To: MarineBrat

Could be for compensation purposes for an arch in trajectory. 2 on inner side of arch, 1 on outside of arch? Just guessing.


14 posted on 05/04/2012 11:38:21 AM PDT by GeorgeWashingtonsGhost
[ Post Reply | Private Reply | To 12 | View Replies]

To: GeorgeWashingtonsGhost

Appears I was right! LOL Not bad for a liberal arts degree. LOL


15 posted on 05/04/2012 11:43:46 AM PDT by GeorgeWashingtonsGhost
[ Post Reply | Private Reply | To 14 | View Replies]

To: GeorgeWashingtonsGhost

Successful launch... SRBs jettisoned normally.


16 posted on 05/04/2012 11:44:37 AM PDT by alancarp (Liberals are all for shared pain... until they're included in the pain group.)
[ Post Reply | Private Reply | To 14 | View Replies]

To: GeorgeWashingtonsGhost

We could even see the faring separation. Amazing long shot.


17 posted on 05/04/2012 11:46:50 AM PDT by GeorgeWashingtonsGhost
[ Post Reply | Private Reply | To 15 | View Replies]

To: GeorgeWashingtonsGhost; MarineBrat
OK rocket scientists, if you like the Atlas, you owe it to yourselves to download this and read. Block out a couple of hours.

Configuration info starts on page 1-4.

18 posted on 05/04/2012 11:50:31 AM PDT by jboot
[ Post Reply | Private Reply | To 14 | View Replies]

To: jboot

I got the Ares manual too, awhile back. Did Obama scrap that program? No moon shot?


19 posted on 05/04/2012 11:53:26 AM PDT by GeorgeWashingtonsGhost
[ Post Reply | Private Reply | To 18 | View Replies]

To: alancarp
Nice launch.

One of these days I'm gonna have to be there in person for one.

20 posted on 05/04/2012 11:53:31 AM PDT by jboot
[ Post Reply | Private Reply | To 16 | View Replies]

To: GeorgeWashingtonsGhost
Wow... takes an almost 3 months continuous burn to raise this satellite to its final orbit. Only then do they start testing to insure that the bird is working as expected.

Halfway across the Atlantic now... nearing 1st main engine cut off. It's all good.

21 posted on 05/04/2012 11:54:03 AM PDT by alancarp (Liberals are all for shared pain... until they're included in the pain group.)
[ Post Reply | Private Reply | To 17 | View Replies]

To: GeorgeWashingtonsGhost
Some of the Ares flight hardware is still on life support over at Lockheed, but the federal program is toast.

Obama isn't going to the "white man's moon". Or anywhere else, for that matter.

22 posted on 05/04/2012 12:02:55 PM PDT by jboot
[ Post Reply | Private Reply | To 19 | View Replies]

To: jboot

Nor would he dare honor those aged white folk of Houston’s mission control and it’s relevance to the early American space program by allowing them to have a retired Space Shuttle. New York getting a Space Shuttle is a dirty, rotten slap in the face.


23 posted on 05/04/2012 12:11:37 PM PDT by GeorgeWashingtonsGhost
[ Post Reply | Private Reply | To 22 | View Replies]

To: GeorgeWashingtonsGhost
I don't think Zero likes Texas any more that he likes space exploration.

NY got Enterprise, the Smithsonian got Discovery. Any idea who is getting Endeavor and Atlantis?

24 posted on 05/04/2012 12:19:31 PM PDT by jboot
[ Post Reply | Private Reply | To 23 | View Replies]

To: jboot

Atlantis going to Kennedy Space Center, FL and Endeavor going to California Science Center.


25 posted on 05/04/2012 12:24:03 PM PDT by GeorgeWashingtonsGhost
[ Post Reply | Private Reply | To 24 | View Replies]

To: GeorgeWashingtonsGhost

Cali and NY instead of Houston and Huntsville. Sux. I’m kind of surprised they left one at KSC. I guess FL is enough of a swing state.


26 posted on 05/04/2012 12:26:45 PM PDT by jboot
[ Post Reply | Private Reply | To 25 | View Replies]

To: jboot

It appears the satellite has successfully separated from the booster into orbit.


27 posted on 05/04/2012 12:35:26 PM PDT by GeorgeWashingtonsGhost
[ Post Reply | Private Reply | To 26 | View Replies]

To: jboot; All

Huntsville, Alabama has an orbiter test vehicle, it is kinda like the Enterprise, not configured for flight, but all the integration and test connections are there...

Its called “Pathfinder” IIRC...I stand to be corrected, but that is what I recall...

It is mounted on display outside the Space Camp facility/museum...

That victory lap that the SCA did with Enterprise on its back (over NYC) was another snub at the JSC Manned Space Flight Center in Houston...

Chuck Schumer can shove the whole orbiter right up his [expletive deleted]!!! As far as I am concerned...


28 posted on 05/04/2012 12:47:56 PM PDT by stevie_d_64 (Occupy the Gun Range!!!)
[ Post Reply | Private Reply | To 26 | View Replies]

To: Jack Hydrazine

Jack,

Thanks for the heads up and the link!

hs


29 posted on 05/04/2012 1:53:59 PM PDT by hotshu (Redistribution of wealth by the government is nothing but theft under the color of law.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: hotshu

Can’t wait for Falcon 9’s launch next!


30 posted on 05/04/2012 2:01:03 PM PDT by Jack Hydrazine (It's the end of the world as we know it and I feel fine!)
[ Post Reply | Private Reply | To 29 | View Replies]

Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.

Free Republic
Browse · Search
News/Activism
Topics · Post Article

FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson