Orbiter
Orbiter is a really cool space simulator. It’s written by Martin Schweiger as a freeware project and is probably one of the most realistic (and beautiful!) space simulators out there. It features very physically realistic models, which means you probably need to learn orbital mechanics before you can put anything in orbit.
But the thing I like the most is all the stuff that goes into the DeltaGlider III, the main spaceship used in the simulation. The first thing I did was to try to take off as a normal plane, and within twenty seconds I had master alarms going off, warning lights and beeping sounds all over the cockpit. In a futile attempt to figure out what was wrong (the landing gear broke due to high speed), I inadvertently shut down the main bus generators and suddenly I sat in a dark cockpit, slowly descending towards earth with broken landing gear, and absolutely zero power. For a few seconds, I frantically tried to press random “APU start” and “emergency power” buttons, but before long I plunged into the ground like a JAS 39 with faulty software.
The picture on the right is the fuel and engine control block. It controls the regulation of fuel to main, rcs and hover engines, as well as crossfeeding, refilling and fuel dump systems. As you can clearly see, the system is hooked up to a space station (dock), from which we are refilling the main fuel tank.
And there’s systems for the high-gain antenna, power supply, autopilot, landing gears, airlock and docking, passenger status, main-engine gimbals, life-support and the on-board computer, the flight controller.
In short, a dream come true. :)



