Author Topic: SpaceX F9 : SES-10 with reuse of CRS-8 Booster SN/1021 : 2017-03-30 : DISCUSSION  (Read 510343 times)

Offline cebri

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Quick question, the core was used in the 23rd mission of the F9, however NSF labels it as #1021, asumming it means 21st 1st stage. Any reason for this, am i missing something? 
"It's kind of amazing that a window of opportunity is open for life to beyond Earth, and we don't know how long this window is gonna be open" Elon Musk
"If you want to see an endangered species, get up and look in the mirror." John Young

Offline mlow

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It is booster 1021 used first on flight 23.

Offline cebri

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It is booster 1021 used first on flight 23.

Has SpaceX given them a number? Anywhere i can check that out?

ThanksĄ
"It's kind of amazing that a window of opportunity is open for life to beyond Earth, and we don't know how long this window is gonna be open" Elon Musk
"If you want to see an endangered species, get up and look in the mirror." John Young

Online Chris Bergin

Clear pad as of an hour ago. Also SFN stream showing no booster vertical.

Cutting it close for Static Fire.

https://www.instagram.com/p/BSGhmh2lRM8/

The have an 8-hour window today. :)

Which is now Monday, so everyone is on the same page ;)
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Offline matthewkantar

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It is booster 1021 used first on flight 23.

Has SpaceX given them a number? Anywhere i can check that out?

ThanksĄ

http://forum.nasaspaceflight.com/index.php?topic=40044.0

Offline old_sellsword

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It is booster 1021 used first on flight 23.

Has SpaceX given them a number? Anywhere i can check that out?

ThanksĄ

http://forum.nasaspaceflight.com/index.php?topic=40044.0

Those are flight numbers, not the same thing. They change with every (re)launch.

Here is a list of SpaceX flight (F9-XX) and booster (B1XXX) numbers for all publicly known stages.

Offline Lar

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It is booster 1021 used first on flight 23.

Has SpaceX given them a number? Anywhere i can check that out?

ThanksĄ

http://forum.nasaspaceflight.com/index.php?topic=40044.0

Those are flight numbers, not the same thing. They change with every (re)launch.

Here is a list of SpaceX flight (F9-XX) and booster (B1XXX) numbers for all publicly known stages.

How much confidence do we have, collectively, in that data? It's organised nicely (if a bit sprawlingly) though. You do good work, sir.
« Last Edit: 03/26/2017 10:05 pm by Lar »
"I think it would be great to be born on Earth and to die on Mars. Just hopefully not at the point of impact." -Elon Musk
"We're a little bit like the dog who caught the bus" - Musk after CRS-8 S1 successfully landed on ASDS OCISLY

Offline old_sellsword

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It is booster 1021 used first on flight 23.

Has SpaceX given them a number? Anywhere i can check that out?

ThanksĄ

http://forum.nasaspaceflight.com/index.php?topic=40044.0

Those are flight numbers, not the same thing. They change with every (re)launch.

Here is a list of SpaceX flight (F9-XX) and booster (B1XXX) numbers for all publicly known stages.

How much confidence do we have, collectively, in that data? It's organised nicely (if a bit sprawlingly) though.

It's all public information, unless it has a qualifier (i.e. Presumed B1035).

Offline Lar

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I'm a Wikipedia old hand so tend to love it if someone takes the time to link everything up to sources. But that's a lot of work. Not doubting, just saying, can't source WP from that chart, right? NVM, off topic for this thread.
"I think it would be great to be born on Earth and to die on Mars. Just hopefully not at the point of impact." -Elon Musk
"We're a little bit like the dog who caught the bus" - Musk after CRS-8 S1 successfully landed on ASDS OCISLY

Offline CameronD

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Interesting article in the Financial Review today:

http://www.afr.com/leadership/innovation/elon-musks-spacex-is-about-to-reuse-falcon-9-rocket-in-wright-brothers-moment-20170326-gv71em

Nothing particularly new, other than finishing with this quote stating that if all goes well, #1021 will never fly again:

Quote
Gwynne has promised us parts of the rocket," Halliwell said. "We want them for the SES board room."



« Last Edit: 03/27/2017 01:44 am by CameronD »
With sufficient thrust, pigs fly just fine - however, this is not necessarily a good idea. It is hard to be sure where they are
going to land, and it could be dangerous sitting under them as they fly overhead.

Online FlokiViking

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Quote
other than finishing with this quote stating that if all goes well, #1021 will never fly again

Is that really what the quote says?
If the SES boardroom gets a grid fin and a leg, does that mean #1021 will (or could) never fly again?   ??? ;)

Offline zodiacchris

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Not really, it could just mean that it flies a third time with a new fin and leg, or a set from the pile of used legs and grid fins that have been accumulating from all the recovered boosters... :)

Offline SweetWater

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Interesting article in the Financial Review today:

http://www.afr.com/leadership/innovation/elon-musks-spacex-is-about-to-reuse-falcon-9-rocket-in-wright-brothers-moment-20170326-gv71em

Nothing particularly new, other than finishing with this quote stating that if all goes well, #1021 will never fly again:

Quote
Gwynne has promised us parts of the rocket," Halliwell said. "We want them for the SES board room."

I hate to be Debbie Downer (that's a lie, but I digress...), but this seems like bad karma. Counting chickens before they're hatched. Let's have a successful launch and satellite deployment, a successful landing, and get the stage back to port in one piece. THEN it's safe to talk about what parts can go in the board room.

Offline K210

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The lack of healthy scepticism is worrying me about this launch

Offline Lars-J

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The lack of healthy scepticism is worrying me about this launch

Are you concerned about a lack of health skepticism before every launch? If not, why single this one out?

Offline CameronD

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The lack of healthy scepticism is worrying me about this launch

Are you concerned about a lack of health skepticism before every launch? If not, why single this one out?

Healthy scepticism didn't get men to the moon... and from telecasts we've seen of previous launches it's banned from SpaceX Mission Control also.
With sufficient thrust, pigs fly just fine - however, this is not necessarily a good idea. It is hard to be sure where they are
going to land, and it could be dangerous sitting under them as they fly overhead.

Offline faramund

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Well, does anyone (and I assume at least someone) know, what's the smallest time between test fire and launch (attempt?)

Offline MikeAtkinson

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The lack of healthy scepticism is worrying me about this launch

What is there to be sceptical about? This first stage is not being reflown? SpaceX and SES are lying?

Or do you mean concern? By whom? I'm sure SpaceX, range, FAA and SES are concerned about this launch, same as about any other. Or do you mean lack of concern by us in a forum? Why is that worrying? Can our concern or lack of it change anything?

My default assumption is that after the first few launches there is a 1 in 100 chance of failure for any modern vehicle. Flight rate is not high enough for any particular launcher to say differently from a statistical point of view. Ariane 5, Atlas V, Falcon 9 all 1 in 100, I don't see any reason for this first stage reflight to be any different.


Offline MP99



The lack of healthy scepticism is worrying me about this launch

What is there to be sceptical about? This first stage is not being reflown? SpaceX and SES are lying?

I have seen concerns that heating during reentry has the possibility of weakening the aluminium structure of the tanks. Presumably SpaceX will have eliminated this and similar concerns during NDT.

Also, reuse puts extra cycles on subsystems which are subject to a lot of stress and lifetime concerns. I'm mainly thinking of the helium system here - not sure if there are others.

This is not to say I think this flight will fail, but I will be holding my breath more than normal until MECO and separation.

Cheers, Martin

Offline friendly3

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The lack of healthy scepticism is worrying me about this launch

They put a four-leaf clover on each of their patches if that can reassure you, it must be some sort of "healthy scepticism" turned into healthier enthusiasm or even healthier boldness.

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