[OFF TOPIC] JOwen's Rocketry Shenanigans

[JOwen]

is anything salvageable from these rockets when they come back down?

Yep. They are completely reusable! Refill the motor with propellant and you’re good to go. They deploy a parachute at apogee, which is held closed until a predetermined altitude on the way down, when the parachute opens. It’s then located with a built-in GPS tracker. All of this flight/recovery control is done autonomously by the on board avionics software, which also measures and reports the altitude and speed obtained during flight.