In case of serious problems, engines will be replaced, not repaired.
SpaceX Company demonstrated The third generation of Raptor engines used on its rockets. Raptor 3 retained approximately the same dimensions as previous generations, but has changed significantly in appearance.
SpaceX engineers redesigned the engine to integrate most of the external hardware into the body and reduce the size of what was left. The result is a fairly minimalist engine.
As the company explains, the Raptor 3 is designed in such a way that it can be reused as quickly as possible. For this, for example, the engine has been stripped of external radiators.
There is a nuance: the new engine design complicates complex repairs. In such cases, SpaceX plans to simply replace the engine with a new one: the design will deploy rapid serial production of Raptor 3.
An interesting point: the new engine is much lighter than previous generations (1.7 tons versus 3.6 tons for the first generation and 2.8 tons for the second), but produces more torque (280 tf versus 185 tf for the first generation and 230 tf for the second generation).
There is no word on when flights using the third generation of Raptor engines will begin.
