How to start a rocket engine

 

Raptor start sequence is

— Elon Musk (@elonmusk) February 28, 2023

 

 

Raptor start is now reliable on the test stand under most conditions.

Now we’re working on dynamically adapting the start sequence based on increasingly difficult propellant inlet pressures & temps.

Operating with low pressure, “warm” liquid oxygen is particularly important.

— Elon Musk (@elonmusk) February 28, 2023