News for hackers. Stuff that matters.

A comment on Show HN: Rocket Launch and Orbit Simulator.

Re:Show HN: Rocket Launch and Orbit Simulator by MadnessASAP on Friday January 09, 2026 @08:45PM (#46561880)
What did you use for closed loop guidance? If you aren't aware of it NASA has a lovely paper called UPFG "Unified Powered Flight Guidance" [1] used for the space shuttle. This was implemented and made more universal for KSP (of course) by Przemysław "Noiredd" Dolata as PEGAS "Powered Explicit Guidance Ascent System" [2]

If it's your thing you could try implementing it and getting a single continuous burn to final orbit.

Awesome work BTW!

[1] https://ntrs.nasa.gov/citations/19740004402

[2] https://github.com/Noiredd/PEGAS

Edit: I now see it's on your roadmap, so I guess it is your thing.

[ Parent | on HN ]
Re:Show HN: Rocket Launch and Orbit Simulator by lamontcg on Friday January 09, 2026 @10:40PM (#46562528)
I've got another kos-PEG implementation here as well, along with a really extensive bibliography:

https://github.com/lamont-granquist/KSP-KOS-PEG/blob/main/li...

[ Parent | on HN ]
Re:Show HN: Rocket Launch and Orbit Simulator by donutthejedi on Friday January 09, 2026 @11:08PM (#46562664)
For this model I kinda just made up my own system to play around with it, while it wasn't very effective it was pretty fun. That being said thanks a lot for the recommendations, I wasn't very aware of the options I had for it.
[ Parent | on HN ]