What is expansion ratio? #shorts

What's the expansion ratio of a rocket engine? Expansion ratio is the ratio between the area of the throat and the area of the nozzle exit. A nozzle’s job is to convert high pressure into high speed exhaust gas, the faster the engine throws propellant out the back, the better.

Want to learn more? Watch my in-depth video on aerospike engines, we go real deep into it! https://youtu.be/D4SaofKCYwo

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