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A comment on SpaceX’s Falcon Heavy rocket seems to be a hit with satellite companies. Parent comment

Re:SpaceX’s Falcon Heavy rocket seems to be a hit with satel... by _Microft on Thursday October 25, 2018 @01:32PM (#18302690)
SpaceX is using the RCS (Reaction Control System, https://en.wikipedia.org/wiki/Reaction_control_system) of their rockets for this job (i.e. as Ullage motor, https://en.wikipedia.org/wiki/Ullage_motor).
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Re:SpaceX’s Falcon Heavy rocket seems to be a hit with satel... by _Microft on Thursday October 25, 2018 @01:39PM (#18302760)
This shows the contents of a tank (I think it's the oxygen tank as there's no transfer tube in the middle of the tank as it would be in the RP-1 tank (that's short for "rocket propellant-1" a sort of refined kerosine - and yeah, very imaginative name!)) sloshing around during SECO-1 (Second Engine Cut-off 1) during the CRS-4 mission.

https://youtu.be/7YkCh7uOw1Y?t=1442

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