SpaceX And/Or Rocketry In General

archae86
archae86
Joined: 6 Dec 05
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Gary Charpentier

Gary Charpentier wrote:
Sometimes it works.  Sometimes it doesn't.

Thanks, I was unaware of that one.

There are a few youtube videos of the event.  This one:

https://www.youtube.com/watch?v=hKgxuREq9DU

has the advantage of sequentially displaying multiple points of view.  On the other hand it seems to turn into human interest shots after 1:30.

There seems to be a very abrupt near-total termination of thrust not long after it clears the tower, with the rest of the motion being a simple free fall back to ground level and the RUD.

Mike Hewson
Mike Hewson
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CRS-15 was the last of the

CRS-15 was the last of the block 4 throwaways. Let's hope to see some booster landings soon ! :-)

The next two opportunities are slated for July 20 & 22 .....

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

archae86
archae86
Joined: 6 Dec 05
Posts: 3157
Credit: 7225214931
RAC: 1040096

Mr. Steven, the first try

Mr. Steven, the first try fairing-catcher vessel, has just gotten new much longer arms installed.

https://www.teslarati.com/spacex-mr-steven-arm-upgrade-complete-quadruple-size-net/

I guess the main variables are steering accuracy of the parafoils on the fairing, active propulsion of Mr. Steven, and net size.

I wondered if the new arms had adjustment capability--not for catching, but to help fit through passages, into harbor, and such.  What do you think you see?

Anonymous

In the picture I am sure that

In the picture I am sure that the arms/netting is in the extended position.  The harbor at Canaveral is quite large to accommodate cruise ships so if reducing the spread of the arms to be more vertical is an option then there should be no problem maneuvering within the harbor basins or channels.  Also I imagine there is propulsion steering amid ships to navigate the channel into the turning basin.

archae86
archae86
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All four new arms plus the

All four new arms plus the net got photographed on Mr. Steven.

In order for Port Canaveral clearances to matter, probably they'll need to get enough evidence that this arrangement actually works to invest in building an East Coast ship.  Or two, for that matter, assuming they want to catch both fairing halves.

Mike Hewson
Mike Hewson
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Mr Steven looks quite the

Mr Steven looks quite the Cadillac ie. has the mojo to move about.

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

archae86
archae86
Joined: 6 Dec 05
Posts: 3157
Credit: 7225214931
RAC: 1040096

Mike Hewson wrote:Mr Steven

Mike Hewson wrote:
Mr Steven looks quite the Cadillac ie. has the mojo to move about.

this page has some specifications.

She has 10,300 horsepower.  The sportiest speed number on there is 32 knots (for maximum speed--light ship) with lots of numbers in the mid 20s.  Compared to the tubs SpaceX uses to move the landing barges around and for other routine range tasks, Mr. Steven is quite the speedster.

She also has multiple bow thrusters.  I imagine those were originally included to aid in cozying up to an offshore oil platform in non-ideal conditions, but they might possibly give some last 20 seconds closure to descending fairing possibility, and surely they would allow extra flexibility in moving around in port (as suggested by ROBL).

archae86
archae86
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There is a recently posted

There is a recently posted YouTube video of Mr. Steven doing trials with the new arms and new net deployed. The wake suggests she was doing something else just before the video begins but during the video she is mostly in a backing turn.

https://www.youtube.com/watch?v=VlCO7gBXWNA

Mike Hewson
Mike Hewson
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Seems to have been

Seems to have been zig-zagging. I believe a half-fairing is just under a metric tonne. Mr Steven appears to be able to catch one of these drifting down on chutes. So if this is to be trialled with the Iridium Next launch on the 25th, then it seems to be before local dawn per SpaceFlightNow ie.  4:39:26 a.m. PDT ??

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

Mike Hewson
Mike Hewson
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Joined: 1 Dec 05
Posts: 6588
Credit: 317951182
RAC: 390674

There's a promo featuring Mr

There's a promo featuring Mr Steven produced by the makers of the thrusters. Some neat moves !

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

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