Hello, I just read the "octograbber" has already been used. Which thread covers it? I could not easily find it
Quote Michael Seeley @Mike_Seeley 1m1 minute agoWelcome home, #Falcon9. The now twice launched & landed #SpaceX #BulgariaSat1 just returned to port aboard the #OCISLY. – at Jetty Park Pierhttps://twitter.com/Mike_Seeley/status/880407593042182144Yep, looks like a Roomba!
Michael Seeley @Mike_Seeley 1m1 minute agoWelcome home, #Falcon9. The now twice launched & landed #SpaceX #BulgariaSat1 just returned to port aboard the #OCISLY. – at Jetty Park Pier
Quote from: mvpel on 10/11/2017 11:10 pmI was really amazed to see that it was showing 6,000 km/h when the entry burn ended, is that a record?During BulgariaSat-1 launch 1st stage was traveling at 6600km/h hen the entry burn ended.
I was really amazed to see that it was showing 6,000 km/h when the entry burn ended, is that a record?
Interesting video shared to the SpaceX Facebook group regarding the return of the SES-11 booster. She's leaning a bit. Roomba garage is open but you can't see if it's being used or not.https://www.facebook.com/groups/spacexgroup/permalink/10155923362006318/
https://twitter.com/EmreKelly/status/920398227521855490From looking at the above photograph, three, possibly four containers appear to have been removed from the aft (?) / Octagrabber end of OCISLY - presumably at least one contains the equipment that powers the Thrustmaster pod. Compare and contrast with this slightly earlier photograph:https://twitter.com/julia_bergeron/status/920042069594435585The container that was above the Octagrabber's garage is on the deck at the far end of OCISLY, but has now been lifted off entirely. Working in reverse chronological order, a lightly earlier photo with all the containers in place:https://twitter.com/Restrantek/status/920232647909105664
Also note, in the first image, that with the removal of several containers, that particular end of OCISLY is now floating high in the water.
Quote from: woods170 on 10/18/2017 11:37 amAlso note, in the first image, that with the removal of several containers, that particular end of OCISLY is now floating high in the water.They probably have had to detank all fuel reserves for that thruster on that side, too, so there's a lot of mass gone.
Quote from: Alastor on 10/18/2017 12:05 pmQuote from: woods170 on 10/18/2017 11:37 amAlso note, in the first image, that with the removal of several containers, that particular end of OCISLY is now floating high in the water.They probably have had to detank all fuel reserves for that thruster on that side, too, so there's a lot of mass gone.I saw that and didn't reckon it was down to the weight of the containers alone. I wouldn't be surprised if - for whatever reason - ballast water has been pumped out at that end (/ in at the other end.
Rounding this down a bit, that's about 1,000 metric tons off the displacement - and that's not down to equipment, fuel: they've pumped ballast water out to bring that end out of the water for whatever reason.
Edit: per below this is Bulgariasat 1 (1029.2) not SES-11(1031.2)
Using the rubbing strakes on the side as a guide, that end is a bit over 1m out of the water more than usual (it's probably more like 4ft, but I'd prefer to under-estimate).
It's entirely possible that the fuel tanks in that side of the barge (I assume them to be located under deck, correct ?) were damaged by the fire. If so, there might have be a fire under the deck too, and possibly much worse than up there. At the very least, they'll have to inspect that side for fire damage and maybe they'll have to replace some hull plates or some structure beams.
Quote from: Alastor on 10/19/2017 09:52 amIt's entirely possible that the fuel tanks in that side of the barge (I assume them to be located under deck, correct ?) were damaged by the fire. If so, there might have be a fire under the deck too, and possibly much worse than up there. At the very least, they'll have to inspect that side for fire damage and maybe they'll have to replace some hull plates or some structure beams.We know from previous posts in this thread that diesel fuel for the thrusters is stored in large rectangular self-bunded tanks on deck. The only thing they are allowed to store below deck is water.
Allow me to disagree, but I REALLY don't see how you can say that. The photo referred to (a) has been taken from a significant distance and (b) has been taken at an angle (which would over-emphasize any tilt) so I'd be waiting for a high-res side-on shot before jumping to too many conclusions..Besides, the specs you linked to give barge height to be roughly 20'. If usual draft is 11' as you say, that means only 9' (~3m) freeboard under normal conditions. Because it's floating, trimming high at one end means it'll be sitting (slightly) lower in the water at the other end making it look worse than it really is.