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Nh - The Launch Thread, Godspeed little one
djellison
post Jan 16 2006, 03:08 PM
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I thought it was time, with the Atlas V about to roll out - for a new thread for NH for the launch etc.

Someone asked over at the HZ just how NH can go so fast, this was my reply....

QUOTE
How do you get a spacecraft to Jupiter in under a year? Easy. Make it very very light, and put it on a very very big rocket. The config of Atlas V rocket being used to launch NH (551 - 5m fairing, 5 solids, and one engine on the Centaur stage ) would typically put 8,670kg into GTO or 20,520 into LEO.
New Horizons is 478kg, and it's Star 48B 3rd stage is 2,137kg - so instead of hauling 20 tons, this vehicle is hauling about 2.5 tons thus you get a HUGE velocity out of it. AND, once it's done that, you have the final kick of the 48B, 591 thousand kgs-s (thus accelerating is all a further 3.5 - 4km/s ball park speed, if my maths is right)
At launch - the vehicle is 573,160kg. NH is 0.083% of it.
Imagine the Apollo entry capsule on top of a Saturn V...tiny tiny tiny... that was 5,800 kg on a 3,038,500kg rocket - 0.191% - more than double that percentage of NH. The cutaway's are almost comical, with this tiny gold-clad box on an enormous vehicle.
Basically - it's a LOT of rocket, and not a lot of payload.
For comparison, look how much fuss was made of Stardust that entered so quickly. It took >16 hrs to get from the distance of the moon to Utah. NH makes that journey in 9 hours smile.gif
One thing the NH mission is not short of, is superlatives.


I'm not one for good luck charms (although I'll eat peanuts during a Martian EDL with the best of them), but this mission has been so long in coming, that it deserves every ounce of luck it can have - the best, most accurate launch possible, the cleanest checkout, and incident free cruise to Jupiter.

Goodluck and Godspeed little one, we're with you every step of the way.

Doug
PS - Alan, you're a credit to your field, spending so much time answering questions and writing the PI Perspectives, it's been a hell of a journey!
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Guest_Myran_*
post Jan 16 2006, 04:17 PM
Post #2





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4-5 mph helvick? That was a humble start. Now its on the pad it will be a lot more soon. Even though New Horizon wont beat the Voyagers in the end.
Good luck little probe, I hope they did check your optics and fuel tank properly.
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Posts in this topic
- djellison   Nh - The Launch Thread   Jan 16 2006, 03:08 PM
- - Toma B   Atlas-5 with New Horizons is moving toward launch ...   Jan 16 2006, 03:27 PM
- - imran   Yes, Godspeed indeed. The launch will be spectacu...   Jan 16 2006, 03:28 PM
- - Toma B   On the way!!!   Jan 16 2006, 03:37 PM
|- - helvick   QUOTE (Toma B @ Jan 16 2006, 04:37 PM)On the ...   Jan 16 2006, 03:47 PM
- - Toma B   Rocket is in place....Yippeee!!! ...   Jan 16 2006, 04:10 PM
- - Myran   4-5 mph helvick? That was a humble start. Now its ...   Jan 16 2006, 04:17 PM
|- - ljk4-1   01.12.06 J.D. Harrington Headquarters, Washington...   Jan 16 2006, 04:35 PM
- - odave   That's quite an inspiring sight. Wunderground...   Jan 16 2006, 05:40 PM
- - Analyst   Goodluck and sunny weather tomorrow. It's been...   Jan 16 2006, 05:55 PM
|- - punkboi   QUOTE (Analyst @ Jan 16 2006, 10:55 AM)Btw, i...   Jan 16 2006, 06:48 PM
|- - imran   Check Spaceflight Now for latest mission updates. ...   Jan 16 2006, 06:54 PM
- - Toma B   It is now exactly T-24 hours until liftoff………..if ...   Jan 16 2006, 06:24 PM
- - elakdawalla   I'm checking out the really wonderful Expendab...   Jan 16 2006, 06:47 PM
- - Toma B   NEW IMAGES at Spaceflightnow.com http://www...   Jan 16 2006, 07:02 PM
|- - imran   QUOTE (Toma B @ Jan 16 2006, 07:02 PM)NEW IMA...   Jan 16 2006, 07:08 PM
||- - odave   QUOTE (imran @ Jan 16 2006, 02:08 PM)Awesome ...   Jan 16 2006, 07:33 PM
|- - BPCooper   QUOTE (Toma B @ Jan 16 2006, 03:02 PM)NEW IMA...   Jan 17 2006, 03:57 PM
|- - Toma B   QUOTE (BPCooper @ Jan 17 2006, 06:57 PM)Go At...   Jan 17 2006, 04:01 PM
- - Toma B   Am I seeing Carolin Porco (...Cassini...) with New...   Jan 16 2006, 07:16 PM
|- - ToSeek   QUOTE (Toma B @ Jan 16 2006, 07:16 PM)Am I se...   Jan 16 2006, 07:27 PM
- - Toma B   The "go" has been given to the launch te...   Jan 16 2006, 07:56 PM
- - Sunspot   I'm almost too nervous to watch these launches...   Jan 16 2006, 07:59 PM
|- - punkboi   QUOTE (Sunspot @ Jan 16 2006, 12:59 PM)I...   Jan 16 2006, 08:21 PM
- - djellison   That's CP. Doug   Jan 16 2006, 08:20 PM
- - Toma B   ...and finally HI-RES pictures at KSC... New Horiz...   Jan 16 2006, 08:21 PM
|- - nprev   QUOTE (Toma B @ Jan 16 2006, 01:21 PM)...and ...   Jan 16 2006, 10:00 PM
- - yaohua2000   Predict trajectory: http://iota.jhuapl.edu/nh116....   Jan 16 2006, 08:42 PM
|- - punkboi   "The first stage fuel tank is now about half ...   Jan 16 2006, 08:50 PM
- - deglr6328   dumb ? time. Why is the first stage copper clad?   Jan 16 2006, 10:16 PM
|- - Airbag   QUOTE (deglr6328 @ Jan 16 2006, 06:16 PM)dumb...   Jan 16 2006, 11:18 PM
|- - MahFL   The first stage tank is Copper Anodised Aluminium....   Jan 16 2006, 11:41 PM
|- - mchan   QUOTE (MahFL @ Jan 16 2006, 03:41 PM)The firs...   Jan 17 2006, 12:07 AM
|- - mcaplinger   QUOTE (mchan @ Jan 16 2006, 04:07 PM)"Co...   Jan 17 2006, 12:15 AM
|- - mars loon   To Pluto and BEYOND !!! at last ...   Jan 17 2006, 12:28 AM
- - djellison   I think it just LOOKS like it's copper clad. i...   Jan 16 2006, 10:28 PM
|- - mcaplinger   QUOTE (djellison @ Jan 16 2006, 02:28 PM)I th...   Jan 16 2006, 10:45 PM
|- - helvick   QUOTE (djellison @ Jan 16 2006, 11:28 PM)I th...   Jan 16 2006, 10:56 PM
- - mchan   QUOTE (djellison @ Jan 16 2006, 07:08 AM)How ...   Jan 16 2006, 10:58 PM
- - djellison   That was the actual line I quoted from the previou...   Jan 16 2006, 11:02 PM
- - Tesheiner   Here is NH on top of the booster. Good luck...   Jan 17 2006, 10:24 AM
- - edstrick   Uh.... Would somebody explain to me how they hav...   Jan 17 2006, 11:21 AM
|- - MahFL   This link has some good info on the Atlas. I may h...   Jan 17 2006, 11:45 AM
|- - djellison   QUOTE (edstrick @ Jan 17 2006, 11:21 AM)Uh......   Jan 17 2006, 11:50 AM
|- - ugordan   QUOTE (edstrick @ Jan 17 2006, 12:21 PM)Would...   Jan 17 2006, 11:54 AM
- - Bill Harris   Good cut-away image, Tesheiner. That puts the sp...   Jan 17 2006, 02:12 PM
|- - ugordan   The thrust vectors do add up differently, but as l...   Jan 17 2006, 02:26 PM
|- - Toma B   QUOTE (ugordan @ Jan 17 2006, 05:26 PM)What e...   Jan 17 2006, 02:44 PM
|- - punkboi   QUOTE (Toma B @ Jan 17 2006, 07:44 AM)The Atl...   Jan 17 2006, 02:46 PM
|- - ugordan   QUOTE (punkboi @ Jan 17 2006, 03:46 PM)Err, w...   Jan 17 2006, 02:50 PM
- - djellison   http://www.google.co.uk/search?hl=en&hs=iE...+in+m...   Jan 17 2006, 02:49 PM
|- - ugordan   QUOTE (djellison @ Jan 17 2006, 03:49 PM)Goog...   Jan 17 2006, 02:52 PM
|- - odave   QUOTE (djellison @ Jan 17 2006, 09:49 AM)Goog...   Jan 17 2006, 02:59 PM
- - chris   I may or may not be able to watch the launch live ...   Jan 17 2006, 02:53 PM
- - Toma B   There is some obvious weather change today at KSC....   Jan 17 2006, 02:57 PM
- - Toma B   Spaceflightnow.com 1445 GMT (9:45 a.m. EST) NASA i...   Jan 17 2006, 02:59 PM
- - yaohua2000   Who knows any NASA TV mirrors, I can only get 34Kb...   Jan 17 2006, 03:00 PM
|- - chris   QUOTE (yaohua2000 @ Jan 17 2006, 03:00 PM)Who...   Jan 17 2006, 03:08 PM
|- - AstronomíaOnline.com   I'm following Mike Griffin's New Horizons ...   Jan 17 2006, 03:11 PM
||- - djellison   QUOTE (AstronomíaOnline.com @ Jan 17 2006, 03...   Jan 17 2006, 03:32 PM
||- - helvick   QUOTE (djellison @ Jan 17 2006, 04:32 PM)Kudo...   Jan 17 2006, 03:44 PM
||- - ljk4-1   QUOTE (helvick @ Jan 17 2006, 10:44 AM)There ...   Jan 17 2006, 03:49 PM
|- - ugordan   QUOTE (yaohua2000 @ Jan 17 2006, 04:00 PM)Who...   Jan 17 2006, 03:12 PM
- - Toma B   When will they start pumping LOX and LH into rocke...   Jan 17 2006, 03:33 PM
|- - ugordan   QUOTE (Toma B @ Jan 17 2006, 04:33 PM)When wi...   Jan 17 2006, 03:36 PM
- - djellison   Good luck to you as well Ben - we're counting ...   Jan 17 2006, 04:02 PM
- - Toma B   Spaceflight Now.com 1607 GMT (11:07 a.m. EST) Wind...   Jan 17 2006, 04:12 PM
|- - helvick   QUOTE (Toma B @ Jan 17 2006, 05:12 PM)Spacefl...   Jan 17 2006, 04:24 PM
|- - ugordan   Ok, there are obviously some serious problems with...   Jan 17 2006, 04:29 PM
|- - helvick   QUOTE (ugordan @ Jan 17 2006, 05:29 PM)Ok, th...   Jan 17 2006, 04:44 PM
||- - ugordan   QUOTE (helvick @ Jan 17 2006, 05:44 PM)No con...   Jan 17 2006, 04:48 PM
|- - odave   QUOTE (ugordan @ Jan 17 2006, 11:29 AM)And I ...   Jan 17 2006, 04:56 PM
|- - ugordan   QUOTE (odave @ Jan 17 2006, 05:56 PM)No strea...   Jan 17 2006, 05:09 PM
|- - MahFL   No streaming here either, just refreshing webcam p...   Jan 17 2006, 05:11 PM
- - Toma B   Cryogenic oxidizer is being filled into Centaur an...   Jan 17 2006, 04:50 PM
|- - MahFL   QUOTE (Toma B @ Jan 17 2006, 04:50 PM)Cryogen...   Jan 17 2006, 04:53 PM
|- - Jeff7   QUOTE (MahFL @ Jan 17 2006, 11:53 AM)You mean...   Jan 17 2006, 04:54 PM
|- - JRehling   Little table of when each world got its first laun...   Jan 17 2006, 04:59 PM
- - PhilCo126   Yes TomaB that's Dr Carolyn PORCO for sure: ht...   Jan 17 2006, 05:00 PM
|- - Toma B   QUOTE (PhilCo126 @ Jan 17 2006, 08:00 PM)Yes ...   Jan 17 2006, 05:05 PM
- - odave   Thanks for the link - better than nothing!   Jan 17 2006, 05:14 PM
- - PhilCo126   Waiting for a Meteo report... At Minus 1 Hour ... ...   Jan 17 2006, 05:17 PM
- - Toma B   T-1hour... Looks sunny...   Jan 17 2006, 05:24 PM
- - PhilCo126   Pitty Dr Clyde TOMBAUGH can't see this but I b...   Jan 17 2006, 05:31 PM
- - lyford   For those "at work" or with video player...   Jan 17 2006, 05:45 PM
|- - MahFL   Border line winds.   Jan 17 2006, 05:54 PM
|- - MahFL   Winds seems to be dropping bit   Jan 17 2006, 05:55 PM
|- - Toma B   QUOTE (MahFL @ Jan 17 2006, 08:55 PM)Winds se...   Jan 17 2006, 06:01 PM
|- - MahFL   updated: 12:46 PM EST on January 17, 2006 Observed...   Jan 17 2006, 06:03 PM
|- - ljk4-1   NEWSALERT: Tuesday, January 17, 2005 @ 1658 GMT ...   Jan 17 2006, 06:05 PM
|- - MahFL   Didn't they have a similar problem with the MR...   Jan 17 2006, 06:05 PM
- - PhilCo126   Winds 25 knots ... gusts 33 knots But there's ...   Jan 17 2006, 05:58 PM
- - Toma B   There was only ONE gust of wind greater than 33 kn...   Jan 17 2006, 06:08 PM
|- - MahFL   Engineers have determined the first stage liquid o...   Jan 17 2006, 06:13 PM
|- - MahFL   NEW LAUNCH TIME! Liftoff has been delayed to 1...   Jan 17 2006, 06:15 PM
- - jamescanvin   Who scheduled this for 5am? I'm going to have...   Jan 17 2006, 06:11 PM
- - PhilCo126   Still exciting though ... T-4 minutes ... built-in...   Jan 17 2006, 06:11 PM
|- - Toma B   QUOTE (PhilCo126 @ Jan 17 2006, 09:11 PM)Stil...   Jan 17 2006, 06:13 PM
- - Rakhir   NEW LAUNCH TIME! Liftoff has being delayed to ...   Jan 17 2006, 06:14 PM
- - Jeff7   QUOTE (Rakhir @ Jan 17 2006, 01:14 PM)NEW LAU...   Jan 17 2006, 06:16 PM
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