Author Topic: SpaceX Falcon 9 FT - SES-9 - March 4, 2016 - DISCUSSION  (Read 1087825 times)

Offline Sesquipedalian

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Re: SpaceX Falcon 9 FT - SES-9 - March 4, 2016 - DISCUSSION
« Reply #160 on: 12/10/2015 04:40 pm »
I wonder if it swapped with CRS-8.

Offline Chris Bergin

Yep, this one is Jan. Updated the title.
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Offline pericynthion

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Re: SpaceX Falcon 9 FT - SES-9 - March 4, 2016 - DISCUSSION
« Reply #162 on: 12/22/2015 02:06 am »
Anybody know whether the upgraded F9 has the performance for the first stage to RTLS on this flight, or whether it will have to be a barge landing?

Online Steven Pietrobon

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Re: SpaceX Falcon 9 FT - SES-9 - March 4, 2016 - DISCUSSION
« Reply #163 on: 12/22/2015 08:51 am »
I don't know for sure, but this is is a much heavier payload into a higher delta-V orbit. I would expect that a barge at sea would be required.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Ben the Space Brit

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Re: SpaceX Falcon 9 FT - SES-9 - March 4, 2016 - DISCUSSION
« Reply #164 on: 12/22/2015 10:32 am »
Proposed Party Thread title for SES-9: "Two Up, Two Down".
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Offline Jarnis

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Re: SpaceX Falcon 9 FT - SES-9 - March 4, 2016 - DISCUSSION
« Reply #165 on: 12/22/2015 10:55 am »
Proposed Party Thread title for SES-9: "Two Up, Two Down".

SES-9: "The Drone Ship Returns" or "Back On The Drone Ship".

(a fairly safe bet that it'll land on barge)

Offline Kabloona

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Re: SpaceX Falcon 9 FT - SES-9 - March 4, 2016 - DISCUSSION
« Reply #166 on: 12/22/2015 11:07 am »
Proposed Party Thread title for SES-9: "Two Up, Two Down".

SES-9: "The Drone Ship Returns" or "Back On The Drone Ship".

(a fairly safe bet that it'll land on barge)

I'd suggest "The Drone Ship Awakens" given the other space-related phenomenon happening now.

Offline rocx

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Re: SpaceX Falcon 9 FT - SES-9 - March 4, 2016 - DISCUSSION
« Reply #167 on: 12/22/2015 11:25 am »
Given that it is a sequel: The Drone Ship Strikes Back!

Or given the great faith that SES has always had in SpaceX's capabilities: Full trust in Full Thrust
Any day with a rocket landing is a fantastic day.

Offline mtakala24

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Offline wannamoonbase

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Re: SpaceX Falcon 9 FT - SES-9 - March 4, 2016 - DISCUSSION
« Reply #169 on: 12/22/2015 11:57 am »
"One more just like before"
Wildly optimistic prediction, Superheavy recovery on IFT-4 or IFT-5

Online LouScheffer

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Re: SpaceX Falcon 9 FT - SES-9 - March 4, 2016 - DISCUSSION
« Reply #170 on: 12/22/2015 12:05 pm »
Has it been announced this will be a landing at all? SES-9 has a mass of 5,330 kg.  If my guesses above are correct, even with a barge landing the limit for recoverable GTO would be somewhere in the low 4000s.  I'd love to be proven wrong, though. 

Offline cdleonard

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Re: SpaceX Falcon 9 FT - SES-9 - March 4, 2016 - DISCUSSION
« Reply #171 on: 12/22/2015 12:08 pm »
SES-9: "The Drone Ship Returns"

If all goes well this will be the third booster to be recovered and the first one with a chance of flying again. SES has also said that they would be very interested in being the first to fly on a reused booster.

This means it's possible that SES-10 (currently scheduled for second half of 2016) will use the same booster as SES-9. "The Booster Returns".

Offline aga

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Re: SpaceX Falcon 9 FT - SES-9 - March 4, 2016 - DISCUSSION
« Reply #172 on: 12/22/2015 04:13 pm »
please stop it... first create a party thread and then suggest names for it in that thread... some of the people here are not interested in the party thread spam...

Offline AncientU

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Re: SpaceX Falcon 9 FT - SES-9 - March 4, 2016 - DISCUSSION
« Reply #173 on: 12/22/2015 04:20 pm »
I don't know for sure, but this is is a much heavier payload into a higher delta-V orbit. I would expect that a barge at sea would be required.

This is almost the perfect combination of payload and orbit to see where the cut-off lies.  If RTLS, then we know the claim of FT's capability is valid.
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Offline abaddon

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Re: SpaceX Falcon 9 FT - SES-9 - March 4, 2016 - DISCUSSION
« Reply #174 on: 12/22/2015 04:35 pm »
This is almost the perfect combination of payload and orbit to see where the cut-off lies.  If RTLS, then we know the claim of FT's capability is valid.
At 5.3 tons, this is much too heavy for RTLS unless SpaceX has really sandbagged the numbers.  This would have been an expendable flight on a 1.1.

Will be a barge landing, for sure.

Offline saliva_sweet

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Re: SpaceX Falcon 9 FT - SES-9 - March 4, 2016 - DISCUSSION
« Reply #175 on: 12/22/2015 04:43 pm »
Has it been announced this will be a landing at all? SES-9 has a mass of 5,330 kg.  If my guesses above are correct, even with a barge landing the limit for recoverable GTO would be somewhere in the low 4000s.  I'd love to be proven wrong, though.

I recall that a recovery attempt was confirmed by SES, but I suspect the orbit is likely to stretch the traditional meaning of GTO.

Offline AncientU

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Re: SpaceX Falcon 9 FT - SES-9 - March 4, 2016 - DISCUSSION
« Reply #176 on: 12/22/2015 04:55 pm »
This is almost the perfect combination of payload and orbit to see where the cut-off lies.  If RTLS, then we know the claim of FT's capability is valid.
At 5.3 tons, this is much too heavy for RTLS unless SpaceX has really sandbagged the numbers.  This would have been an expendable flight on a 1.1.

Will be a barge landing, for sure.

Has it been announced this will be a landing at all? SES-9 has a mass of 5,330 kg.  If my guesses above are correct, even with a barge landing the limit for recoverable GTO would be somewhere in the low 4000s.  I'd love to be proven wrong, though.

Since our estimates are all over the map, this flight should inform us of FT capability.

Recoverable after lofting 5,330mT -- likely, but some skepticism.
Barge needed or RTLS -- we'll see.
"If we shared everything [we are working on] people would think we are insane!"
-- SpaceX friend of mlindner

Offline su27k

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Re: SpaceX Falcon 9 FT - SES-9 - March 4, 2016 - DISCUSSION
« Reply #177 on: 12/22/2015 06:29 pm »
Has it been announced this will be a landing at all? SES-9 has a mass of 5,330 kg.  If my guesses above are correct, even with a barge landing the limit for recoverable GTO would be somewhere in the low 4000s.  I'd love to be proven wrong, though.

I recall that a recovery attempt was confirmed by SES, but I suspect the orbit is likely to stretch the traditional meaning of GTO.

On the first page of this thread you can see the original plan is for launch to go to a sub-synchronous orbit. I do wonder if SpaceX would be willing to give up recovery in order to put the satellite closer to GTO, as a compensation for the delays.

Offline abaddon

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Re: SpaceX Falcon 9 FT - SES-9 - March 4, 2016 - DISCUSSION
« Reply #178 on: 12/22/2015 06:34 pm »
I guess I'll just have to try to act surprised when the SES-9 launch is to ~ -1800m/s of GSO (or slightly sub that) with downrange barge landing...

Offline rocx

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Re: SpaceX Falcon 9 FT - SES-9 - March 4, 2016 - DISCUSSION
« Reply #179 on: 12/22/2015 06:39 pm »
An update about the expected launch date from this article: http://spacenews.com/falcon-9s-second-stage-restart-was-just-as-important-as-sticking-the-landing/
Quote
SES on Dec. 22 said all the information it had from the launch reinforced its plans to launch SES-9 by late January aboard the upgraded Falcon 9.

That pretty much confirms that this one will launch after Jason, save for unlikely payload delays.
Any day with a rocket landing is a fantastic day.

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