A helpful person has posted to youtube the minute ten seconds from the SpaceX launch broadcast showing the landing. CRS-8 landing
Available resolution can be selected up to 1080p, that with full screen selected is quite a show. I still notice different things on rewatching--this time just how much correction toward vertical is visible quite late in the game.
Some numbers have been posted regarding the allowable barge tilt at landing, and what was seen on this attempt. They are not consistent, but agree that the intended capability of the combined barge/launcher stage system is to tolerate at least twice what is seen here, or perhaps four times.
Welding "shoes" placed over the landing legs to the barge deck remains the plan--not clear just when--maybe already, maybe "real soon now".
That's a good shot robl. The plume is rather less noticeable at height because it spreads out so much, I'd reckon you caught main engine cutoff when it 'disappeared'. The second stage doesn't have much of a bloom to see at that altitude.
I think the tilt at the barge was up to around 5 degrees. One of the feet was slightly out of the outer target ring.
Cheers, Mike.
I have made this letter longer than usual because I lack the time to make it shorter ...
... and my other CPU is a Ryzen 5950X :-) Blaise Pascal
That's a good shot robl. The plume is rather less noticeable at height because it spreads out so much, I'd reckon you caught main engine cutoff when it 'disappeared'. The second stage doesn't have much of a bloom to see at that altitude.
Thanks. Good point. I had not considered MECO.
Quote:
I think the tilt at the barge was up to around 5 degrees. One of the feet was slightly out of the outer target ring.
Cheers, Mike.
As archae86 notes it looks almost to secure. Looking at the barge with the 1st stage "attached" I am sort of surprised that it is not falling over or slipping around on the deck in those seas. I was wondering if they did not secure it. Magnetic "tie downs" would work but would require some type of ferrous material which would add weight. On a Friday night here in Florida and in California I'll bet those young engineers are "toasting their success" as well they should.
I believe this launch contained a "BEEM" (sp???) which is an inflatable "bounce house". This will be attached to the ISS and inflated later.
Magnetic "tie downs" would work but would require some type of ferrous material which would add weight.
Neat idea. Interestingly you could have minimal magnetic material on the foot pads and decide how much force you'd like by having electromagnetic loops on the barge deck. The pads could easily be induced to the desired polarity.
Cheers, Mike.
I have made this letter longer than usual because I lack the time to make it shorter ...
... and my other CPU is a Ryzen 5950X :-) Blaise Pascal
Yet another youtube of the landing might add something here. This one is referenced on the SpaceX twitter account. This is not just a portion of the original broadcast, but is rather video from a chase plane, and the youtube playback is available at resolution options all the way up to 4K (click on the gear symbol to choose). Selecting one of the higher resolutions and using full screen gives quite a show.
That to me is a rather incredible achievement. Are those films in real time? When you look at the angle of attack and the speed to the floating platform, how the hell did they slow it down and straighten it up like that in the last few 10's of feet?
Waiting for Godot & salvation :-)
Why do doctors have to practice?
You'd think they'd have got it right by now
A helpful person has posted
)
A helpful person has posted to youtube the minute ten seconds from the SpaceX launch broadcast showing the landing.
CRS-8 landing
Available resolution can be selected up to 1080p, that with full screen selected is quite a show. I still notice different things on rewatching--this time just how much correction toward vertical is visible quite late in the game.
Some numbers have been posted regarding the allowable barge tilt at landing, and what was seen on this attempt. They are not consistent, but agree that the intended capability of the combined barge/launcher stage system is to tolerate at least twice what is seen here, or perhaps four times.
Welding "shoes" placed over the landing legs to the barge deck remains the plan--not clear just when--maybe already, maybe "real soon now".
That's a good shot robl. The
)
That's a good shot robl. The plume is rather less noticeable at height because it spreads out so much, I'd reckon you caught main engine cutoff when it 'disappeared'. The second stage doesn't have much of a bloom to see at that altitude.
I think the tilt at the barge was up to around 5 degrees. One of the feet was slightly out of the outer target ring.
Cheers, Mike.
I have made this letter longer than usual because I lack the time to make it shorter ...
... and my other CPU is a Ryzen 5950X :-) Blaise Pascal
RE: That's a good shot
)
Thanks. Good point. I had not considered MECO.
As archae86 notes it looks almost to secure. Looking at the barge with the 1st stage "attached" I am sort of surprised that it is not falling over or slipping around on the deck in those seas. I was wondering if they did not secure it. Magnetic "tie downs" would work but would require some type of ferrous material which would add weight. On a Friday night here in Florida and in California I'll bet those young engineers are "toasting their success" as well they should.
I believe this launch contained a "BEEM" (sp???) which is an inflatable "bounce house". This will be attached to the ISS and inflated later.
RE: Magnetic "tie downs"
)
Neat idea. Interestingly you could have minimal magnetic material on the foot pads and decide how much force you'd like by having electromagnetic loops on the barge deck. The pads could easily be induced to the desired polarity.
Cheers, Mike.
I have made this letter longer than usual because I lack the time to make it shorter ...
... and my other CPU is a Ryzen 5950X :-) Blaise Pascal
A FANTASTIC show!!!!! :-)
)
A FANTASTIC show!!!!! :-) I'm SOOOOO GLAD that they FINALLY landed on the barge! :-)
TimeLord04
Have TARDIS, will travel...
Come along K-9!
Join SETI Refugees
It's worth noting this
)
It's worth noting this involved a boostback from an LEO insertion. This barge landing is worth several tens of millions of dollars.
Cheers, Mike.
I have made this letter longer than usual because I lack the time to make it shorter ...
... and my other CPU is a Ryzen 5950X :-) Blaise Pascal
Yet another youtube of the
)
Yet another youtube of the landing might add something here. This one is referenced on the SpaceX twitter account. This is not just a portion of the original broadcast, but is rather video from a chase plane, and the youtube playback is available at resolution options all the way up to 4K (click on the gear symbol to choose). Selecting one of the higher resolutions and using full screen gives quite a show.
4K resolution chase plane landing video
That to me is a rather
)
That to me is a rather incredible achievement. Are those films in real time? When you look at the angle of attack and the speed to the floating platform, how the hell did they slow it down and straighten it up like that in the last few 10's of feet?
Waiting for Godot & salvation :-)
Why do doctors have to practice?
You'd think they'd have got it right by now
RE: Yet another youtube of
)
Thanks for posting that, excellent landing and footage.
Noticed it even does a little hop on landing, not surprising the desk appears to be pitching at least 10 feet.
I was wondering high the centre of gravity was, it looks unstable but most of the mass when empty would be very low down.
RE: I was wondering high
)
The really hot areas eg. engines/turbos/etc are made of niobium alloy which is quite dense.
Cheers, Mike.
I have made this letter longer than usual because I lack the time to make it shorter ...
... and my other CPU is a Ryzen 5950X :-) Blaise Pascal