Why do the flames from rockets seem to be proportionally as large as the rocket itself?

Question

I’m a big rocket nerd and have watched a lot of launches and every time I see one, the flames produced by the engines seem to be just as large as the size of the rocket. Is this simply a coincidence or is there a reason behind it?

In: Engineering

Answer 1

The flames are the *result* of rockets needing a large thrust, therefore its sizes are not coincidental but rather another outcome