Orbiter Launcher

I really like Orbiter, but I don't think it's open source.
Can a launcher be made?

Program: Orbiter

License: Freeware (you can redistribute it without modifications)

Description from the website: "ORBITER is a free flight simulator that goes beyond the confines of Earth's atmosphere. Launch the Space Shuttle from Kennedy Space Center to deploy a satellite, rendezvous with the International Space Station or take the futuristic Delta-glider for a tour through the solar system - the choice is yours."

Website: http://orbit.medphys.ucl.ac.uk/orbit.html