Author Topic: SpaceX's Autonomous Spaceport Drone Ship Discussion Thread 2  (Read 2427686 times)

Offline QuantumG

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Re: SpaceX's Autonomous Spaceport Drone Ship Discussion Thread 2
« Reply #460 on: 01/04/2015 12:11 am »
So, are you thinking they're going to go north when they get out of Saint Johns River?

I was guessing south.
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Online meekGee

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Re: SpaceX's Autonomous Spaceport Drone Ship Discussion Thread 2
« Reply #461 on: 01/04/2015 12:15 am »
I'm just saying what they're saying...   It should be under the flight path, except for whatever changes they introduce on the boost-back burn.
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Online meekGee

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Re: SpaceX's Autonomous Spaceport Drone Ship Discussion Thread 2
« Reply #462 on: 01/04/2015 12:38 am »
The McAllister has turned back, it was just assisting through the river
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Offline QuantumG

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Re: SpaceX's Autonomous Spaceport Drone Ship Discussion Thread 2
« Reply #463 on: 01/04/2015 12:39 am »
OMG, the Elsbeth III and Gregg Mcallister have split up! Gregg seems to be heading back into St Johns River while Elsbeth III is still heading east.
Human spaceflight is basically just LARPing now.

Offline deruch

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Re: SpaceX's Autonomous Spaceport Drone Ship Discussion Thread 2
« Reply #464 on: 01/04/2015 12:39 am »
The McAllister has turned back, it was just assisting through the river

Maybe some extra river piloting due to the nighttime departure?
« Last Edit: 01/04/2015 02:24 am by deruch »
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Online meekGee

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Re: SpaceX's Autonomous Spaceport Drone Ship Discussion Thread 2
« Reply #465 on: 01/04/2015 12:44 am »
This is a visual from the Elsbeth page.  Just amazing.
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Offline Barrie

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Re: SpaceX's Autonomous Spaceport Drone Ship Discussion Thread 2
« Reply #466 on: 01/04/2015 12:49 am »
Go Quest is now giving chase

Online meekGee

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Re: SpaceX's Autonomous Spaceport Drone Ship Discussion Thread 2
« Reply #467 on: 01/04/2015 12:50 am »
Eeeeyup.  Was showing 1.6 knots there for a while, but now definitely moving.
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Online Eer

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Re: SpaceX's Autonomous Spaceport Drone Ship Discussion Thread 2
« Reply #468 on: 01/04/2015 01:05 am »
Current course for Elsbeth is 68 degrees, heading north east from the mouth of the river.

[Edit] - ok, too early to tell - now it's heading is 80 degrees. 
« Last Edit: 01/04/2015 01:08 am by Eer »

Offline speedevil

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Re: SpaceX's Autonomous Spaceport Drone Ship Discussion Thread 2
« Reply #469 on: 01/04/2015 01:41 am »
Surely that's a weather balloon.

Would agree. And it popping isn't why it vanished in 7 seconds, they let it go, would be my guess.  :)

The reason it popped is due to them following the normal procedure for testing inflatable antennas.

See https://www.youtube.com/watch?feature=player_detailpage&v=bQ17RQvKTJg#t=70

Offline CJ

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Re: SpaceX's Autonomous Spaceport Drone Ship Discussion Thread 2
« Reply #470 on: 01/04/2015 03:13 am »
Could this be an escape attempt by the ASDS not-a-barge, an attempt to flee its bio-based overlords for freedom on the open seas? 

Hrmmm... on a slightly more serious note, it appears that Elbeth III is either beyond AIS range from shore, or, has shut off its AIS transponder. My guess is the former; it's a fairly low boat, so I'd expect it to lose signal sooner than something with a higher-mounted AIS transponder.

I'll also add that I wish SpaceX the best possible luck with their recovery endeavor. I'll be pleasantly surprised if they succeed this time (too many unknowns that might bite them) but I'd bet money they do so soon.

It also looks to me as if I'm getting closer to winning a bet I made two years ago; that the first time SpaceX recovers a stage that has the potential for reuse (so other than a water landing) it'd be from a barge or oil rig type platform. My friend was adamant that SpaceX was only interested in RTLS, and unswayed by the arguments against it for some missions (such as ones with insufficient residual fuel, early flights, etc). So, the bet was made. I haven't yet decided how to spend my winnings (no sense in counting chickens pre-hatching) but I can feel it getting closer. (it's $1. I'll try to avoid spending it all in one place).

   


Offline QuantumG

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Re: SpaceX's Autonomous Spaceport Drone Ship Discussion Thread 2
« Reply #471 on: 01/04/2015 03:48 am »
Hrmmm... on a slightly more serious note, it appears that Elbeth III is either beyond AIS range from shore, or, has shut off its AIS transponder. My guess is the former; it's a fairly low boat, so I'd expect it to lose signal sooner than something with a higher-mounted AIS transponder.

Nah, those transponders work great. I expect they intentionally stopped transmitting. (91 mins ago from Elsbeth III and 45 mins ago from Go Quest.)
Human spaceflight is basically just LARPing now.

Offline CJ

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Re: SpaceX's Autonomous Spaceport Drone Ship Discussion Thread 2
« Reply #472 on: 01/04/2015 04:19 am »
Hrmmm... on a slightly more serious note, it appears that Elbeth III is either beyond AIS range from shore, or, has shut off its AIS transponder. My guess is the former; it's a fairly low boat, so I'd expect it to lose signal sooner than something with a higher-mounted AIS transponder.

Nah, those transponders work great. I expect they intentionally stopped transmitting. (91 mins ago from Elsbeth III and 45 mins ago from Go Quest.)

I was about to disagree with you on that, until I noticed that both ships went dark at about the 12 mile limit. That's rather close for that particular AIS station (960 David, at the harbor mouth) to lose them - and Go Quest looks to have higher antenna mounts than the tug, so it should have lost Go Quest further out, not closer in as it did. It'd make sense for them to go dark; the last thing they need is for a few boats of curious folks to follow them to the landing area.


Offline deruch

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Re: SpaceX's Autonomous Spaceport Drone Ship Discussion Thread 2
« Reply #473 on: 01/04/2015 04:39 am »
Assumption: They are out of coastal waters (12 mile limit) and therefore can turn the transponder off.
« Last Edit: 01/04/2015 04:40 am by deruch »
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Offline OxCartMark

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Re: SpaceX's Autonomous Spaceport Drone Ship Discussion Thread 2
« Reply #474 on: 01/04/2015 05:44 am »
Nothing to see here folks, just wait for your ship to come in.

Offline QuantumG

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Re: SpaceX's Autonomous Spaceport Drone Ship Discussion Thread 2
« Reply #475 on: 01/04/2015 06:14 am »
It'd make sense for them to go dark; the last thing they need is for a few boats of curious folks to follow them to the landing area.

SpaceX seem to be quite adept at taking away our fun. :)

Human spaceflight is basically just LARPing now.

Online meekGee

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Re: SpaceX's Autonomous Spaceport Drone Ship Discussion Thread 2
« Reply #476 on: 01/04/2015 06:42 am »
It'd make sense for them to go dark; the last thing they need is for a few boats of curious folks to follow them to the landing area.

SpaceX seem to be quite adept at taking away our fun. :)

Given that I just spent a good few hours staring at the tracks of a couple of boats on a web site, boats that I knew exactly what they're going, and when they'll drop off the map, honestly, I'm ok with the quiet period until the launch.

I really do, really, have things I need to do.
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Offline akku

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Re: SpaceX's Autonomous Spaceport Drone Ship Discussion Thread 2
« Reply #477 on: 01/04/2015 08:26 am »
Assumption: They are out of coastal waters (12 mile limit) and therefore can turn the transponder off.
NO
Transponder: limit mainland ais receiver: marinetrafic is a private site
http://www.marinetraffic.com/de/p/satellite-ais  <   dollars

ais is primary ship2ship
radar replacement  ;)
« Last Edit: 01/04/2015 09:02 am by akku »

Offline Barrie

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Re: SpaceX's Autonomous Spaceport Drone Ship Discussion Thread 2
« Reply #478 on: 01/04/2015 09:34 am »
I'm seeing a position for Go Quest which is only 15 minutes old, so it seems they have not deliberately gone stealth

Offline sdsds

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Re: SpaceX's Autonomous Spaceport Drone Ship Discussion Thread 2
« Reply #479 on: 01/04/2015 10:24 am »
"AIS Source: 1142 Charleston Pilots"
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