This is very cool! i got into high powered model rocketry as a hobby and made my own very basic, command line driven, mission control software. My rocket has a little raspberry pi zero wired up with an IMU and some other sensors. On the pad it connects to my mission control system over wifi running on my laptop. I get to do the whole launch sequence and "the launch computer has taken over the countdown" thing (technically a no-no but it's just for fun on my own). The onboard flight computer detects apogee using a barometer, accelerometer, and a kalman filter which then deploys the chute with a little black powder charge. It's a very fun and educational hobby but can get $$