Author Topic: SpaceX F9 : SES-10 with reuse of CRS-8 Booster SN/1021 : 2017-03-30 : DISCUSSION  (Read 510381 times)

Offline douglas100

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Great picture. The booster has cleaned up really well.

This is the first time we've seen the floor of the hangar with the TEL in position. It's still not clear if there would be enough space lengthwise to integrate a second stage with the other two cores in this configuration. (It's probably not necessary anyway.)

Another interesting clue is the 90T crane at the door. This suggests that a complete FH, minus payload, would be integrated on the floor, rather than the side boosters being lifted singly onto the TEL after the centre core and second stage have been loaded.

Slightly OT comments. On with the show!
« Last Edit: 03/30/2017 09:08 am by douglas100 »
Douglas Clark

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Do we know if they got the booster up and if so early enough to still make the original launch time or will there be a slip to 1.04?

Based on the tweet SES just sent, looks like timeline is still ok.

Online FutureSpaceTourist

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Not surprisingly this launch is attracting quite a lot of interest in the space community:

Quote
DEIMOS IMAGING‏ @deimosimaging 2m2 minutes ago

#LC39A @NASAKennedy looks crowded from the #DEIMOS2 orbit! Everything is getting ready for today’s #Falcon9 #SES10 launch.Good luck @SpaceX!

https://twitter.com/deimosimaging/status/847385017349058561
« Last Edit: 03/30/2017 09:55 am by FutureSpaceTourist »

Offline AncientU

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I might add that I find it amazing that's there's been almost a deafening silence lately when it comes to the spreadsheet created by Tory Bruno (or at least touted by him) and then vigorously debated on this forum on the cost benefit of reuse.
The true significance of the success of this mission is for SX alone. Musk said that he would have considered them to have failed if LV reuse did not succeed.

Many have forgotten this. He hasn't.

If this mission succeeds, and nothing more comes of it ... SX has, as a venture, succeeded in his opinion.

I wish him and SX well in their accomplishment and reaching the goal they set for themselves.
I'm willing to agree that they see it as a big step forwards, but I don't think this limited type of reuse rises to level of "Mission Accomplished" for Musk/SX.  When Musk made those statements he was at least talking about full reuse, if not a "Fully and Rapidly Reused" LV.  That's clearly still a milestone on their pathway to Mars, it's just been postponed to the ITS architecture instead of the Falcon family (i.e. no 2nd stage reuse for F9/FH).  Booster reuse is just the (not so) low hanging fruit.  The first step.  So, while this launch will hopefully be a great success for SpaceX, no.  They haven't (capital S) Succeeded, yet.

How soon they forget...
Surviving the re-entry, soft-landing on the ocean, hitting (literally) the drone ship a couple times, landing on land, landing on the drone ship, re-firing a flown/hot landed booster 8 times, structurally testing a flown booster, static firing 1021, and finally... this upcoming 'first' step.  Just picking the low hanging fruit.

There are many steps to go, no doubt, but this goal post moving was properly predicted by others.
"If we shared everything [we are working on] people would think we are insane!"
-- SpaceX friend of mlindner

Offline ChrisGebhardt

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Backup launch slot is Saturday, not Friday:

Quote
SpaceX is targeting launch of SES-10 from historic Launch Complex 39A (LC-39A) at NASA’s Kennedy Space Center in Florida. The two and a half hour launch window opens on Thursday, March 30, at 6:27 p.m. EDT, or 10:27 p.m. UTC. The satellite will deploy approximately 32 minutes after launch. A backup launch window opens on Saturday, April 1, at 6:27 p.m. EDT, or 10:27 p.m. UTC.

http://www.spacex.com/webcast

Well that's new -- and not what SES and SpaceX said Tuesday.  Interesting.  Be fascinated to learn why this changed from backup on 3/31 to backup on 4/1.
« Last Edit: 03/30/2017 12:51 pm by ChrisGebhardt »

Offline rockets4life97

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Weather looking bad on Friday pushing the backup day to Saturday?

Offline IntoTheVoid

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Also, is 13 hours checkout typical for a satellite - what kind of things would be covered here, and would the checkout time be the same if the satellite had been vertically integrated and not rotated 90' plus ?

IIRC, In the SES press briefing linked a few posts back, Martin Halliwell stated that the 13 hour checkout was typical for the satellite bus that they used for SES-10.

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Weather looking bad on Friday pushing the backup day to Saturday?

Although I think weather is most likely, could it be an FAA issue with closing airspace on Friday? Or does the range approval process include agreeing any airspace restrictions?

Offline wardy89

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Quote
“We’re at the edge of quite significant bit of history here. This is big step for SES, for @SpaceX and for the industry.” M. Halliwell, SES

https://twitter.com/ses_satellites/status/847434266447196161


That white stand to the right of the rocket is that to enable payload integration while the rocket is on the transport erector?
« Last Edit: 03/30/2017 01:17 pm by wardy89 »

Offline Paul_G

Also, is 13 hours checkout typical for a satellite - what kind of things would be covered here, and would the checkout time be the same if the satellite had been vertically integrated and not rotated 90' plus ?

IIRC, In the SES press briefing linked a few posts back, Martin Halliwell stated that the 13 hour checkout was typical for the satellite bus that they used for SES-10.

Thanks - will check out the briefing.

Offline Norm38

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A question I don’t recall being asked or mentioned.  Are the legs on this booster the same ones that were on the CRS-8 flight?  Or are they new?  Were they ever removed and refurbished in some way?  Or just folded back up?

Offline yokem55

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Dirty core on the pad. :D
https://twitter.com/nova_road/status/847414851076898817

You can barely make out the '21' tag on the booster in this pic.

Offline ChrisGebhardt

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A question I don’t recall being asked or mentioned.  Are the legs on this booster the same ones that were on the CRS-8 flight?  Or are they new?  Were they ever removed and refurbished in some way?  Or just folded back up?

The legs were removed when the booster came back to port.  The best public answer we have to this right now is that "all major elements of the booster are the same" from when it flew on CRS-8 last year.

Offline gongora

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Not the Immersat-35E booster, as it is still at McGregor, it should depart there after this evenings launch.

Upcoming payloads include Inmarsat 5 F4, and then a couple flights later Intelsat 35e

Offline ThePonjaX

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A question I don’t recall being asked or mentioned.  Are the legs on this booster the same ones that were on the CRS-8 flight?  Or are they new?  Were they ever removed and refurbished in some way?  Or just folded back up?

The legs were removed when the booster came back to port.  The best public answer we have to this right now is that "all major elements of the booster are the same" from when it flew on CRS-8 last year.

Some details about refurbishement here:

https://forum.nasaspaceflight.com/index.php?topic=42630.0


Offline Llian Rhydderch

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Do we have an ETA on the launch day article that NSF usually posts?

I've been waiting to use that one to tweet NSF, and it is already past 10am local time in the eastern US.

Just looked here, and no article, yet:
https://www.nasaspaceflight.com/
Re arguments from authority on NSF:  "no one is exempt from error, and errors of authority are usually the worst kind.  Taking your word for things without question is no different than a bracket design not being tested because the designer was an old hand."
"You would actually save yourself time and effort if you were to use evidence and logic to make your points instead of wrapping yourself in the royal mantle of authority.  The approach only works on sheep, not inquisitive, intelligent people."

Offline jpo234

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Dirty core on the pad. :D
https://twitter.com/nova_road/status/847414851076898817

You can barely make out the '21' tag on the booster in this pic.

It's easier from the original sized image:



Edit: The link is to the original image, but the forum doesn't show it.
« Last Edit: 03/30/2017 02:29 pm by jpo234 »
You want to be inspired by things. You want to wake up in the morning and think the future is going to be great. That's what being a spacefaring civilization is all about. It's about believing in the future and believing the future will be better than the past. And I can't think of anything more exciting than being out there among the stars.

Offline ChrisGebhardt

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Do we have an ETA on the launch day article that NSF usually posts?

I've been waiting to use that one to tweet NSF, and it is already past 10am local time in the eastern US.

Just looked here, and no article, yet:
https://www.nasaspaceflight.com/

When the EVA going on right now is done.

Offline whitelancer64

Dirty core on the pad. :D
https://twitter.com/nova_road/status/847414851076898817

You can barely make out the '21' tag on the booster in this pic.

It's easier from the original sized image:



Edit: The link is to the original image, but the forum doesn't show it.

I thought that re-flights of the same core were supposed to have a -number indicating the number of flights?

Very interesting this core does not have 21-1 or 21-2 painted on it...
"One bit of advice: it is important to view knowledge as sort of a semantic tree -- make sure you understand the fundamental principles, ie the trunk and big branches, before you get into the leaves/details or there is nothing for them to hang on to." - Elon Musk
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Offline old_sellsword

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Dirty core on the pad. :D
https://twitter.com/nova_road/status/847414851076898817

You can barely make out the '21' tag on the booster in this pic.

It's easier from the original sized image:



Edit: The link is to the original image, but the forum doesn't show it.

I thought that re-flights of the same core were supposed to have a -number indicating the number of flights?

Very interesting this core does not have 21-1 or 21-2 painted on it...

They do get a number for each flight, but that was never going to be painted on the actual booster.

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