For example, on my ships, I put a pump along the pipeline for thruster oxidizer, and the pump is set to enable if the pipe in front of it has less than 40 fuel in it. This guarantees that the thrusters are 40% full when they are working, and this makes my platforms fly at the speed I want them to fly at.
I'm working on a more advanced speed control design for my promethium ship, but I wanted to post this one because of how cool I think it is that Factorio 2.1 simplified this design so much, it looks so clean and beautiful. Previously this part of my ship had a lot more machinery to it, but now it's genuinely just a pump, and the control is so much better. I can't wait to use the 2.1 fluid mechanics to engineer speed control for my interstellar platform
