Ilpez

As a reminder, pitch in KSP is a function of SIN (value between 90 and -90) i don't know about yaw, but i use atan2 in my kRPC version of your UPFG

Finally an update #yey! Just want you to know, that i already port your UPFG to kRPC(Without multistage feature), and it works ! At least now you know that your code works in KSP

As a reminder KSP Coordinate system : X,Z,Y(Left Hand). Your MATLAB Simulation : X,Y,Z(Right Hand).

@Reddy Well i was referring to PEGAS, but it looks like your new algorithm will be better than ever (yaiks ), just forget about my problem. I hope this document will help you(there is a lot of flow chart in there)Shutte Guidance

Just sign up for this thread, it's me from reddit Happy to see your thread, well i have one request for your TODO LIST, PEG doesn't work with a very powerfull 1 stage, the stage that do the passive guide thing. If the cut-off orbital speed of the second stage are more than half of the required speed to get to the orbit, as soon as the PEG kick in, the rocket pitches to 90 degrees and the Burnout time going crazy. I hope you can find the workaround for this, i try but i fail. I'm still a third grader in senior high school, so most of the equation are beyond me. So i need your help EDIT : Maybe this one will help you