The Space Shuttle Enterprise. The Enterprise was not meant to be a flight worthy bird, but in the Orbiter universe, it is. This is an early BETA version, so there is no payload included. It is only intended to man rate the vehicle, and add enhancements and new features before it becomes mission ready.
In the release version, there will be a satellite payload to haul up.
Uses Vinkas Multistage and Spacecraft DLL files, which are included. Limited launch sequence profile included. Enjoy.