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(YouTube)   SBIRS5 launch. Atlas 5, 421   (youtube.com) divider line
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373 clicks; posted to STEM » and Discussion » on 18 May 2021 at 1:21 PM (4 weeks ago)   |   Favorite    |   share:  Share on Twitter share via Email Share on Facebook



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2021-05-18 1:22:31 PM  
Submitter - Please remember to use the LIVE tag in the future as it makes it easier for the admins to spot such threads in the queue.

Thanks!
 
2021-05-18 1:23:01 PM  

Bathia_Mapes: Submitter - Please remember to use the LIVE tag in the future as it makes it easier for the admins to spot such threads in the queue.

Thanks!


Will do. Thank you.
 
2021-05-18 1:25:23 PM  
sweet. how many times has this booster flown and which drone ship is it going to land on? I hope they catch the fairings today too.

/i keed i keed.
/hope they dont scrub again today.
 
2021-05-18 1:25:31 PM  

the_innkeeper: Bathia_Mapes: Submitter - Please remember to use the LIVE tag in the future as it makes it easier for the admins to spot such threads in the queue.

Thanks!

Will do. Thank you.


Thanks! :)
 
2021-05-18 1:25:58 PM  
Nice catch up on the pre-mission interviews and graphics...
 
2021-05-18 1:28:21 PM  

khitsicker: sweet. how many times has this booster flown and which drone ship is it going to land on? I hope they catch the fairings today too.

/i keed i keed.
/hope they dont scrub again today.


I am sure ULA would have no issue attempting to land on one of SX's drone ships. Once.
 
2021-05-18 1:28:51 PM  
T-0 reset to 1737 EDT.
 
2021-05-18 1:38:11 PM  
Woot!
 
2021-05-18 1:39:41 PM  
Huh. Holding onto SRBs. That's odd.
 
2021-05-18 1:40:59 PM  
Neat.

/ Caught it just in time amidst the chaos that is my life.
 
2021-05-18 2:01:18 PM  
Right on.
 
2021-05-18 2:14:34 PM  

the_innkeeper: Huh. Holding onto SRBs. That's odd.


Makes sure they come down in the right area.

The thing that always bugs me about the Atlas V is the asymmetric arrangement of the SRBs.
 
2021-05-18 2:27:59 PM  

the_innkeeper: khitsicker: sweet. how many times has this booster flown and which drone ship is it going to land on? I hope they catch the fairings today too.

/i keed i keed.
/hope they dont scrub again today.

I am sure ULA would have no issue attempting to land on one of SX's drone ships. Once.


They're Space Force.  The Navy does ships.
 
2021-05-18 2:38:12 PM  

wage0048: the_innkeeper: Huh. Holding onto SRBs. That's odd.

Makes sure they come down in the right area.

The thing that always bugs me about the Atlas V is the asymmetric arrangement of the SRBs.


Yep.

Always makes me itchy.
 
2021-05-18 3:24:35 PM  

the_innkeeper: wage0048: the_innkeeper: Huh. Holding onto SRBs. That's odd.

Makes sure they come down in the right area.

The thing that always bugs me about the Atlas V is the asymmetric arrangement of the SRBs.

Yep.

Always makes me itchy.


I kinda like it.  Adding one SRB at a time instead of pairs lets them use larger, more mass-efficient boosters and it's within the main engine's thrust vectoring capability to compensate, so our aesthetic preference for symmetry can go to hell.  Pure, merciless engineering.

Hanging on to the spent boosters for so long does seem weird, though.  I'd be curious to see the math that led to that decision.
 
2021-05-18 3:36:26 PM  

Professor Science: the_innkeeper: wage0048: the_innkeeper: Huh. Holding onto SRBs. That's odd.

Makes sure they come down in the right area.

The thing that always bugs me about the Atlas V is the asymmetric arrangement of the SRBs.

Yep.

Always makes me itchy.

I kinda like it.  Adding one SRB at a time instead of pairs lets them use larger, more mass-efficient boosters and it's within the main engine's thrust vectoring capability to compensate, so our aesthetic preference for symmetry can go to hell.  Pure, merciless engineering.

Hanging on to the spent boosters for so long does seem weird, though.  I'd be curious to see the math that led to that decision.


It might be a matter of dropping them where their re-entry doesn't hit anything or leave pieces where they shouldn't.

SpaceX has certainly shown the other rocket-launch players the value of PR - extra camera feeds and live coverage for a military satellite would have been unthinkable 5-10 years ago.
 
2021-05-18 3:36:53 PM  

Professor Science: the_innkeeper: wage0048: the_innkeeper: Huh. Holding onto SRBs. That's odd.

Makes sure they come down in the right area.

The thing that always bugs me about the Atlas V is the asymmetric arrangement of the SRBs.

Yep.

Always makes me itchy.

I kinda like it.  Adding one SRB at a time instead of pairs lets them use larger, more mass-efficient boosters and it's within the main engine's thrust vectoring capability to compensate, so our aesthetic preference for symmetry can go to hell.  Pure, merciless engineering.

Hanging on to the spent boosters for so long does seem weird, though.  I'd be curious to see the math that led to that decision.


AV 411 is just... bad... on the eyes. 

Drop zone, I think, is what was said up thread.
 
2021-05-18 4:33:21 PM  

the_innkeeper: Drop zone, I think, is what was said up thread.


Yeah, but that doesn't make much sense to me.  Delta IV's SRBs burned for about the same duration and were jettisoned promptly.  I saw a mention somewhere else (can't recall where, of course) of there being aerodynamic concerns, which does fit with the differently shaped noses used with the different rockets.
 
2021-05-18 5:52:04 PM  
WTF?

Fark user imageView Full Size
 
2021-05-18 8:33:27 PM  

Markus5: WTF?

[Fark user image image 764x551]


Trump administration?
 
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