42 is a spacecraft simulation software designed to support the design and validation of attitude control systems. It accurately models spacecraft attitude dynamics and orbital flight regimes throughout the solar system. Notably, it can simulate multiple spacecraft concurrently for studies on rendezvous, proximity operations, and formation flying. The software features optional visualization and supports various dynamics such as multi-body, rigid or flexible bodies, and spacecraft-surface contact forces for scenarios like landers and rovers. Installation instructions are provided for different platforms, and common problems related to text formatting in input files are highlighted.
https://github.com/ericstoneking/42