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SpaceX F9 - Starlink 4 - SLC-40

Grendal

SpaceX Moderator
Jan 31, 2012
5,812
7,133
Santa Fe, New Mexico
As per my last post, the fairings looked quite damaged when coming in to port.
And it appears stage 1 was scuttled at sea.

I'm not surprised. I'm sure SpaceX has learned there isn't anything worth recovering in salt water logged boosters. This is their third and the last one they towed to port and were able to examine thoroughly.
 

mongo

Well-Known Member
May 3, 2017
12,961
38,449
Michigan
I'm not surprised. I'm sure SpaceX has learned there isn't anything worth recovering in salt water logged boosters. This is their third and the last one they towed to port and were able to examine thoroughly.
Other than the grid fins, which I think are over a million a set.
 
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ecarfan

Well-Known Member
Sep 21, 2013
19,204
13,856
West Vancouver, British Columbia
Had an interesting Starlink-4 satellite train viewing opportunity at 5:37AM today. First saw two sats, widely separated. Then a few more, than a pair very close together but slightly off the track of all the single sightings, then saw three very close together, then a pair, then three more, and then clouds obscured my view. My neighbor and his daughter were outside with my wife and I. Pretty fun!
 

Grendal

SpaceX Moderator
Jan 31, 2012
5,812
7,133
Santa Fe, New Mexico
We got the answer on what happened with the booster for this launch. Hans, during the pre-launch NASA conference, was asked what happened. He said the booster had some unforeseen high winds which were out of preset parameters hitting the ASDS that caused the booster to think the landing would be dangerous. So the booster did not perform the transition maneuver onto the ASDS trajectory and instead landed in the water to protect OCISLY.
 

HVM

Savolainen
Oct 30, 2012
1,045
1,806
Finland
And here is Elon's tweet:
str_4t.jpg

"Recent missed landing (at sea) was due to incorrect wind data. If this (land) landing fails, it will most likely be for a different reason."
Elon Musk on Twitter
 

ecarfan

Well-Known Member
Sep 21, 2013
19,204
13,856
West Vancouver, British Columbia
Hans, during the pre-launch NASA conference, was asked what happened. He said the booster had some unforeseen high winds which were out of preset parameters hitting the ASDS that caused the booster to think the landing would be dangerous. So the booster did not perform the transition maneuver onto the ASDS trajectory and instead landed in the water to protect OCISLY.
Thanks for posting that. I’ve been wondering if SpaceX would make a public statement about that missed booster landing.

But then Elon tweeted that the issue was “incorrect wind data”. Is that the same as “unforeseen”, as in “the weather forecast was wrong and the winds at the landing site were significantly higher than forecast”? I think they are both saying the same thing, but I’m not certain.

In any case, it was great to see the CRS mission booster land successfully at LZ-1!
 

Hugh-SG

Member
Jun 3, 2019
89
96
Vancovuer, BC
Thank you for that information. I suspected the Abort to Water on that flight was a protective measure due to something being out of the normal parameters required to allow the booster to attempt an OCISLY landing.

Appreciate you letting us know.

Cheers! Hugh-SG
 

Patrick W

Active Member
Mar 17, 2015
1,476
882
SLC, UT
I've seen reported that the booster is said to have been scuttled. Has that been confirmed?

I saw Musk's tweet explaining why it didn't land as planned but I don't think he's said anything about the fate of the booster.
 

Grendal

SpaceX Moderator
Jan 31, 2012
5,812
7,133
Santa Fe, New Mexico
I've seen reported that the booster is said to have been scuttled. Has that been confirmed?

I saw Musk's tweet explaining why it didn't land as planned but I don't think he's said anything about the fate of the booster.

Nothing official that I'm aware of. I expect someone saw the supportive tugs come back to port at a pace that indicated they weren't towing a booster. That would be a strong indication they scuttled the booster. Pulling the super expensive grid fins just make sense from a monetary perspective. Which is why I'm assuming they did that at least.
 
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