Conservation of angular momentum, guys. Jim's right, the legs stopped the roll. Think about the axis of rotation here in relation to the force of the engine, how could the engine possible stop the roll?
Yep, I see it too. I stand corrected. Fortunately my hat is very tasty.
I'm not saying that the interstage could be regarded as a LEGO element, but it's probably a close approach to one, in terms of plugging in a replacement. How much of a stage needs to refly before it's a reflight? Getting into Grandfather's axe/Ship of Theseus territory...
Quote from: Joffan on 12/06/2018 11:40 pmI'm not saying that the interstage could be regarded as a LEGO element, but it's probably a close approach to one, in terms of plugging in a replacement. How much of a stage needs to refly before it's a reflight? Getting into Grandfather's axe/Ship of Theseus territory...Just the tail number...But I can't see them taking apart the tanks, which are welded together. If the tanks fly again, it's a reflight.
It seems to me the interstage would have impacted the ocean with the most force since it is at the top.
Quote from: Lee Jay on 12/06/2018 03:00 pmThis seems correct to me, save for the fact that the center engine does contribute substantially by slowing the decent and therefore reduces the aerodynamic torque being applied by the wayward grid fins, thus allowing the relatively weak cold gas thrusters to do their jobs.It also slows the spin by removing any spin energy that is transferred into spins about other axes. The rocket does not want to spin along the axis that runs the length of the booster so it will start to turn into a flat spin over time. These other spins the rocket can counteract and remove.
This seems correct to me, save for the fact that the center engine does contribute substantially by slowing the decent and therefore reduces the aerodynamic torque being applied by the wayward grid fins, thus allowing the relatively weak cold gas thrusters to do their jobs.
Is the Dragon capsule ok and when will it berth with the ISS?
Hypothetical. Let's say next time that a tanker gets sent out to flood the RP-1 tank with deionized water. The stage rights itself, and sinks much (most?) of the way below water. Stresses due to wave action should be reduced, and workers on the surface might have a much easier time fixing the end cap to allow crane lift right from the drink and back onto OCISLY avoiding the issue of towing altogether. Feasible? Or am I talking about my butt more than I already realize? I'm fully aware that those people out there, with their 24 hours of experience, are now the worlds foremost experts on towing a floating rocket stage that was never intended to be towed or floated.
So, this shows the rocket under tow. Looks like north instead of south?
Quote from: Roy_H on 12/07/2018 05:13 amSo, this shows the rocket under tow. Looks like north instead of south?At that point I believe it was just anchored in place. What looks like movement is likely the current heading south.
Quote from: Lars-J on 12/07/2018 05:58 amQuote from: Roy_H on 12/07/2018 05:13 amSo, this shows the rocket under tow. Looks like north instead of south?At that point I believe it was just anchored in place. What looks like movement is likely the current heading south.Far as I know the current there is northbound. Either way I think it's just being held in place and not actively towing.
