If you have some time, try to visit the
Technical Museum Vienna today or tomorrow. Alexander Demets and his colleague are presenting their work on a
Funksimulator (= radio flight simulator?) there. They used C++,
Raknet, and interestingly,
Irrlicht as GUI framework for this:

By the way, the creators of this are from Austria [worth mentioning, because it's just a small country and also the origin of Irrlicht itself ;)]. And yes, I like unusual projects (= not games) done with Irrlicht. :)