I've managed to crop out the detail from inside the interstage. Check out what the arrow points to.Also really cool to finally observe, the hydraulic actuators for the fins. You can clearly see 3 of them and how they are arranged in a push/pull configuration.
I've managed to crop out the detail from inside the interstage. Check out what the arrow points to.
If its the same design as the one in the picture posted above (with Shotwell in front of it) you see that support is attached to the top of the stage 1 tank. Wonder what made it buckle.
They can probably strip it down to bare metal tanks and octaweb, rebuild it with new electronics, engines, and pneumatics etc, and still be cheaper than a new one.
Quote from: webdan on 12/07/2018 04:55 pmI've managed to crop out the detail from inside the interstage. Check out what the arrow points to.Also really cool to finally observe, the hydraulic actuators for the fins. You can clearly see 3 of them and how they are arranged in a push/pull configuration.I'll have to dig up the article where I got the picture to give it proper image credit, but we've already seen inside an interstage.Edit: image credit https://www.bloomberg.com/news/features/2018-07-26/she-launches-spaceships-sells-rockets-and-deals-with-elon-musk
Quote from: Mike_1179 on 12/07/2018 05:02 pmIf its the same design as the one in the picture posted above (with Shotwell in front of it) you see that support is attached to the top of the stage 1 tank. Wonder what made it buckle.Probably the missing part of the interstage was pushed into it.
Quote from: RoboGoofers on 12/07/2018 04:54 pmQuote from: Greg Hullender on 12/07/2018 04:30 pmWhy didn't it rupture and blow up when it tipped over? From the blooper reel, it looks like the first stage blew up on all previous failed landings (even ones in the water) when it tipped over.Forgive me if this has already been asked and answered, but I looked back through two days of posts and didn't see it.the sea state probably has a lot to do with it. I'd say that's the least likely factor to save the stage. I'd say the stage came in close enough to vertical that it went in fairly deep and could start its topple slowly. It may even have been helped by the fact that it had just rotated past vertical, so was slightly "pre-toppled".Alternative non-serious hypothesis: the stage has to be spinning to survive.
Quote from: Greg Hullender on 12/07/2018 04:30 pmWhy didn't it rupture and blow up when it tipped over? From the blooper reel, it looks like the first stage blew up on all previous failed landings (even ones in the water) when it tipped over.Forgive me if this has already been asked and answered, but I looked back through two days of posts and didn't see it.the sea state probably has a lot to do with it.
Why didn't it rupture and blow up when it tipped over? From the blooper reel, it looks like the first stage blew up on all previous failed landings (even ones in the water) when it tipped over.Forgive me if this has already been asked and answered, but I looked back through two days of posts and didn't see it.
Is there any information as to what caused this recovery failure?
Quote from: Slarty1080 on 12/07/2018 05:16 pmIs there any information as to what caused this recovery failure?Hydraulic pump motor stalled. Which caused the grid fins to all lock in place immobile during the descent process. The rocket was unable to navigate to the landing site, and picked up a significant spin during descent.What caused the pump motor to stall is yet to be determined, they'll probably have to get it on land and take it apart to tell.
It's SpX internal investigation, or with NASA?
Quote from: ellindsey on 12/07/2018 05:18 pmQuote from: Slarty1080 on 12/07/2018 05:16 pmIs there any information as to what caused this recovery failure?Hydraulic pump motor stalled. Which caused the grid fins to all lock in place immobile during the descent process. The rocket was unable to navigate to the landing site, and picked up a significant spin during descent.What caused the pump motor to stall is yet to be determined, they'll probably have to get it on land and take it apart to tell."A leading cause of many hydraulic pump failures is hydraulic fluid contamination". In freezing condition it can be water. Maybe SpX tell us, maybe not. It's SpX internal investigation, or with NASA?
I don't see any reason the could not lift around the grid-fin mount area, it is robust to take the aero loads there from them. Remove them for safe keeping and install lift pins in place...