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(Jalopnik)   Here's the 12 Hours of Sebring commentators calling Saturday's Delta IV launch   ( blackflag.jalopnik.com) divider line
    More: Spiffy, United Launch Alliance, solid rocket boosters, big endurance races, launch control broadcast, Wideband Global SATCOM, Lamborghini Huracán GT3, nearby Cape Canaveral, classic endurance race  
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1118 clicks; posted to Geek » on 20 Mar 2017 at 3:50 PM (43 weeks ago)   |   Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»



24 Comments     (+0 »)
 
View Voting Results: Smartest and Funniest
 
2017-03-20 09:31:29 AM  
Okay that was kinda fun. You don't often get gearheads geeking out calling a launch.
 
2017-03-20 12:11:03 PM  
Yep - very good --- didn't realise you could see the solid fuel boosters come away like that. Guess it helps having a decent camera and they did a great job keeping up. ALSO, how does solid fuel even work? Not exactly coal, is it. Assume fairly similar though.
 
2017-03-20 12:16:25 PM  
Also, why don't they time this race so it ends in daytime when everyone can see what's going on? Or at least dusk.
 
2017-03-20 03:20:15 PM  
I couldn't help but notice that the leader was "J. Taylor - P", driving a Caddy, but I thought Jake Taylor was the catcher. Harris and Rick Vaughn were pitchers.
 
2017-03-20 03:35:35 PM  
upload.wikimedia.orgView Full Size
 
2017-03-20 04:31:55 PM  
12 hours? Forget it!
 
2017-03-20 04:33:01 PM  

colinspooky: Yep - very good --- didn't realise you could see the solid fuel boosters come away like that. Guess it helps having a decent camera and they did a great job keeping up. ALSO, how does solid fuel even work? Not exactly coal, is it. Assume fairly similar though.


Not even close to coal.  Physically, it's closer to rubber- it's ammonium perchlorate powder mixed with a rubber-like binder.  (The binder's the fuel, the AP is the oxidizer. ) Depending on the exact mix, you can add other stuff like aluminum powder and epoxy.  The stuff is cast into shape directly.

Crapton of thrust but not very efficient, so they work really well hauling heavy loads off the ground and then get tossed.  The shuttle's SRBs were 70+ percent of the total thrust getting off the pad.
 
2017-03-20 04:38:02 PM  

colinspooky:  ALSO, how does solid fuel even work? Not exactly coal, is it. Assume fairly similar though.


In this case, some kind of plastic serves both as a fuel and a binder.  There's also an oxidizer, usually some kind of perchlorate, or peroxide or whatever.  Sometimes there is an additional fuel as well, like powdered aluminum.
 
2017-03-20 04:54:43 PM  

colinspooky: Yep - very good --- didn't realise you could see the solid fuel boosters come away like that. Guess it helps having a decent camera and they did a great job keeping up. ALSO, how does solid fuel even work? Not exactly coal, is it. Assume fairly similar though.


Also interestingly enough it burns from the middle out. Before its even lit there is a hallow core in the center that goes almost all the way through. When it burns the middle burns and all the combined fire shoots out the bottom. So its in a way like a giant candle with oxygen mixed in.
 
2017-03-20 05:36:49 PM  
Wow, I did not know you could see the launches from  Sebring.  My folks keep a winter house 15 miles south of the track.  I am going to have to give my dad a hard time on never mentioning this fact... and now I do have a good reason to actually visit once.
 
2017-03-20 05:46:23 PM  

colinspooky: Also, why don't they time this race so it ends in daytime when everyone can see what's going on? Or at least dusk.


I watched about half an hour of it for the first time ever. I started around dark, and my first thought was "racing at night looks badass!"

So yeah, I guess I disagree with you.
 
2017-03-20 05:58:21 PM  
That was cool.  If the NASCAR crew was calling that launch, they'd have been laughing at each other.
 
2017-03-20 06:07:32 PM  

Saiga410: Wow, I did not know you could see the launches from  Sebring.  My folks keep a winter house 15 miles south of the track.  I am going to have to give my dad a hard time on never mentioning this fact... and now I do have a good reason to actually visit once.


I grew up about 30 miles east of Sebring and launches are cool to watch.  Now that private companies are using the Cape we get at least a couple a month.
 
2017-03-20 06:14:03 PM  

SkittlesAreYum: colinspooky: Also, why don't they time this race so it ends in daytime when everyone can see what's going on? Or at least dusk.

I watched about half an hour of it for the first time ever. I started around dark, and my first thought was "racing at night looks badass!"

So yeah, I guess I disagree with you.


The 12 hours of Bathurst starts in the dark and ends at night, so it's done both ways.  But I agree, night racing is farking awesome.  Especially at places like Sebring, where it's still dark most of the lap.
 
2017-03-20 06:36:34 PM  

Kurohone: SkittlesAreYum: colinspooky: Also, why don't they time this race so it ends in daytime when everyone can see what's going on? Or at least dusk.

I watched about half an hour of it for the first time ever. I started around dark, and my first thought was "racing at night looks badass!"

So yeah, I guess I disagree with you.

The 12 hours of Bathurst starts in the dark and ends at night, so it's done both ways.  But I agree, night racing is farking awesome.  Especially at places like Sebring, where it's still dark most of the lap.


Except you cant see shiat unless you're standing on top of someone's motor home at Sebring. The event is one hell of a party, but the race viewing kinda sucks.
 
2017-03-20 06:42:16 PM  

Igor Jakovsky: Saiga410: Wow, I did not know you could see the launches from  Sebring.  My folks keep a winter house 15 miles south of the track.  I am going to have to give my dad a hard time on never mentioning this fact... and now I do have a good reason to actually visit once.

I grew up about 30 miles east of Sebring and launches are cool to watch.  Now that private companies are using the Cape we get at least a couple a month.


***Next ULA, an AltasV, (was to have been on the 18th, 21st, 24th) is on the 27th (maybe) from SLC41. Next SpaceX is on the 29th and will be the first Falcon9 used core launch, from SLC40(!).***
 
2017-03-20 06:52:03 PM  
That was cool, thanks subby.

Also, as they said on the commentary, that was some stellar camera work.
 
2017-03-20 08:36:32 PM  

sno man: Okay that was kinda fun. You don't often get gearheads geeking out calling a launch.


I was quite surprised by how detailed the commentary was. It sounds like they may have been anticipating the launch.
 
2017-03-20 08:55:05 PM  

Tobin_Lam: sno man: Okay that was kinda fun. You don't often get gearheads geeking out calling a launch.

I was quite surprised by how detailed the commentary was. It sounds like they may have been anticipating the launch.


I'm impressed with the camera work. That's about 100 km / 60 miles from launch and the rocket is mostly going away from there.
 
2017-03-20 09:03:00 PM  
Credit

Still of the launch:
img.fark.netView Full Size
Rocket porn.
 
2017-03-20 09:43:13 PM  

Glockenspiel Hero: colinspooky: Yep - very good --- didn't realise you could see the solid fuel boosters come away like that. Guess it helps having a decent camera and they did a great job keeping up. ALSO, how does solid fuel even work? Not exactly coal, is it. Assume fairly similar though.

Not even close to coal.  Physically, it's closer to rubber- it's ammonium perchlorate powder mixed with a rubber-like binder.  (The binder's the fuel, the AP is the oxidizer. ) Depending on the exact mix, you can add other stuff like aluminum powder and epoxy.  The stuff is cast into shape directly.

Crapton of thrust but not very efficient, so they work really well hauling heavy loads off the ground and then get tossed.  The shuttle's SRBs were 70+ percent of the total thrust getting off the pad.


Storing large amounts of perchlorate powder in plastic tubs was found to be a bad idea in Nevada:
Mega Disasters PEPCON Disaster
Youtube DcrECJ84C5Y
 
2017-03-20 10:39:02 PM  

Daedalus27: Glockenspiel Hero: colinspooky: Yep - very good --- didn't realise you could see the solid fuel boosters come away like that. Guess it helps having a decent camera and they did a great job keeping up. ALSO, how does solid fuel even work? Not exactly coal, is it. Assume fairly similar though.

Not even close to coal.  Physically, it's closer to rubber- it's ammonium perchlorate powder mixed with a rubber-like binder.  (The binder's the fuel, the AP is the oxidizer. ) Depending on the exact mix, you can add other stuff like aluminum powder and epoxy.  The stuff is cast into shape directly.

Crapton of thrust but not very efficient, so they work really well hauling heavy loads off the ground and then get tossed.  The shuttle's SRBs were 70+ percent of the total thrust getting off the pad.

Storing large amounts of perchlorate powder in plastic tubs was found to be a bad idea in Nevada:[iFrame https://www.youtube.com/embed/DcrECJ84C5Y - 480x360]


Man, I remember when that happened. I saw the cloud from where I lived in North Las Vegas. It destroyed my Grandfathers construction office.
 
2017-03-20 10:45:58 PM  
For shiats and giggles, here's the how the Radio Le Mans crew called it:
2017 Mobil 1 Twelve Hours of Sebring - Part 2
Youtube YZSSXsapoto


If for some reason that didn't start at the right place it starts at about the 3h 48m mark...
 
2017-03-21 01:45:47 PM  
Daedalus27:
Storing large amounts of perchlorate powder in plastic tubs was found to be a bad idea in Nevada:[iFrame https://www.youtube.com/embed/DcrECJ84C5Y - 480x360]

"In addition to the PEPCON and Kerr-McGee facilities, there was also a large marshmallow factory "
 
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