if you want to make a high powered rocket your fin size will make or break your project

*Launch footage at the end* if you want to make a high powered rocket your fin size will make or break your project it's how you end up with a land dart instead of a successful launch but we're in 2026, let's use ChatGPT to get it right stability in rocketry isn't a suggestion it's physics. If your center of pressure isn't far enough behind your center of gravity your rocket is gonna tumble the second it leaves the rail Ready when you are. I'm using ChatGPT as my GNC engineer to make me a rocket design app once it's done, I feed in my exact specs: the motor impulse the body tube diameter and my current mass distribution check this out I tell it: I need a static stability margin of 1.5 calibers based on a 66 millimeter body tube and a 650 gram wet mass calculate the span, root cord, tip cord, and taper angle for a cliped delta fins made of plywood that won't shred at mach 0.6 it calculates the Barrowman and flutter equations for me instantly look at that! optimised surface area with minimal drag But what if I want to manually change some dimensions? No problem, ChatGPT was able to implement an input panel that also re-calculates stability margins on the go I'm taking these dimensions straight into CAD here's what the final product looks like how does it fly? watch this follow for more error hacks