Falcon 9 / Dragon CRS-6 ISS resupply


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Beittil

I guess that if at least the rocket stayed on deck, pancaked or otherwise, SpaceX will get some hugely valueable data out of examining the remains. See how the engines have held up, etc...

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Unobscured Vision

Came in too hot again? Darn. They'll get it figured out.

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DocM

It could be that the barge did a last minute Z axis move the booster couldn't compensate for. We'll see. If so, absent an earthquake that shouldn't happen with a ground landing.

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Beittil

Dragon, the 2nd stage and the solar array covers as snapped flying over the UK:

 

CClG4EeUIAA45ZY.png

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DocM

Elon Musk ?@elonmusk 19s19 seconds ago

Looks like Falcon landed fine, but excess lateral velocity caused it to tip over post landing.

Sounds like it was VERY close to successful.

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Beittil

That is so sad, i hope it managed to tip over in such a way that it didn't go overboard... but the angle of attack was on its short side i guess :(

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Unobscured Vision

Oh, shoot. So they need something on the barge to stabilize, protect and secure it once it lands.

 

THIS close ...

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malenfant

Sounds like it landed intact but slid across the deck and overboard. Possibly they may recover it.

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DocM

Hearing there was a strong crosswind.

961abc5e46dfcdabe768f21ca0b4bff4.jpg

3c5c47304a704105da3d29ecba40d6e0.jpg

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DocM

@elonmusk

All we have right now is low frame rate video (basically pictures). Normal video will be posted when ship returns to port in a few days

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DocM

Elon Musk @elonmusk 33m 33 minutes ago

@teknotus There are nitrogen thrusters at top of rocket. Either not enough thrust to stabilize or a leg was damaged. Data review needed.

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DocM

VINE video from a chase plane. Looks like the stage caught a wind gust and the correction caused the lateral velocity.

https://vine.co/v/euEpIVegiIx

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firey

VINE video from a chase plane. Looks like the stage caught a wind gust and the correction caused the lateral velocity.

https://vine.co/v/euEpIVegiIx

That video makes it look like they had it, just over-corrected itself basically.

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DocM

Ahhh....

Replying to Armadillo Aerospace's John Carmack, Elon says there was a prop valve stiction,

@elonmusk

@ID_AA_Carmack Looks like the issue was stiction in the biprop throttle valve, resulting in control system phase lag. Should be easy to fix.

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Unobscured Vision

It still appears to have come in a little fast to me; but yeah, they need the telemetry data and time to go over it. Recovery of S1 would be extremely useful as well.

 

They'll get this figured out. :yes:

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anthdci

Is this attempt not close enough to try bringing it down on land next. That would remove the difficulty of landing it on a moving platform.

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+John.

Is this attempt not close enough to try bringing it down on land next. That would remove the difficulty of landing it on a moving platform.

 

It's less the platform, and more the surrounding weather. The barge doesn't move enough to cause serious problems. If it did, they wouldn't be doing it.

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anthdci

It's less the platform, and more the surrounding weather. The barge doesn't move enough to cause serious problems. If it did, they wouldn't be doing it.

 

ok, so could they not aim for something a bit milder on shore? Just seems a shame for it to get so close twice, only for it to tip over and fall to the bottom of the ocean.

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DocM

Is this attempt not close enough to try bringing it down on land next. That would remove the difficulty of landing it on a moving platform.

Before landing on land they have to prove to the US Air Force they can bring stages down accurately, this to protect the military ranges at KSC and Vandenberg. They're the USAF's sandboxes.

The USAF believes this will happen and has leased SpaceX unused pads to build landing facilities on; KSC LC-13 and Vandenberg SLC-4W. Construction has started at Vandenberg and should start soon at KSC. The signs are already up and environmental studies completed and approved.

SpaceX will self-certify their launch & landing facilities at Brownsville Texas - it's their range and the environmental studies are also completed and approved. Construction starts this summer.

After these landing facilities open the only barge landings will be low margin Falcon 9 launches and Falcon Heavy center cores, neither of which will have enough residual propellants to fly back to the launch sites.

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Steven P.

So it landed OK?

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