How To Start A Rocket Engine // Chilldown, Spin Up, Thermal Conditioning & Ignition!

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 - Timestamps: 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 S