Why Starting A Rocket Engine Is So Hard!
Everyday Astronaut Everyday Astronaut
1.51M subscribers

 Published On Mar 9, 2023

Today we’re going to do a deep dive on how exactly you start a rocket engine. We’ll cover pretty much everything from a simple solid rocket motor, to all the intricacies of liquid fueled rocket engines.

We'll go over thermal conditioning the engine, the spin up process, the scary transient regions, and the actual ignition of the propellants. Then we’ll talk about some of the extra challenges like starting a rocket engine in space and then we'll go step by step through the RS-25's startup procedure.

More of a reader? Check out our article version that also includes some links and sources - https://everydayastronaut.com/how-to-start-a-rocket-engine/

00:00 - Intro
01:55 - Recommended Pre-Requisite Knowledge
02:35 - Starting a Solid Rocket Motor
05:45 - Purging And Thermal Conditioning
13:45 - Spin Up
20:55 - Transients
24:10 - Ignition
32:40 - Starting A Rocket Engine In Space
38:20 - Step By Step Example
53:15 - Throttling And Shutdown
57:10 - Summary And Final Thoughts

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