Falcon 9s have a limit to how many times they can be reused, and, for the last flight of a booster they don't make it land (in one piece), and instead use all the fuel to help the payload. That way they can put much bigger payloads to orbit.
Wikipedia gives the payload for both partially reusable and expended full thrust
Out of the 23 falcon 9 launches in 2018, 8 had no attempt at recovery
When launching an expendable falcon 9, how much of the recovery system does Spacex remove?
I'm assuming they probably remove the titanium grid fins since they are very expensive and hard to manufacture, but what about:
- The landing legs?
- The fluid used to power the hydraulics to deploy the fins and the legs?
- The nitrogen gas in the thrusters used to turn the booster around or to stabilize it?
- The nitrogen gas thrusters themselves?
- All the other expensive or heavy hardware used to land the boosters?
Is it worth it removing all these?