The FlightGear flight simulator project is an open-source, multi-platform, cooperative flight simulator development project. It is a very good open source flight simulator and is also very configurable. You can choose from a large number of aircrafts available and also the world scenery. One of the best things is that it is very configurable and editable. You can write your own flight dynamics model and aircraft. Also you can remotely control it and even write scripts to do all the variables recording for further analysis.

fgrun :

fgrun is the graphical launcher for FlightGear. Sadly it is not yet available in Fedora repos (review request)

So here are the fedora rpms for you

source rpm    fgrun-1.5.1-1.src.rpm

F12 x86_64   fgrun-1.5.1-1.x86_64.rpm

F12 i686       fgrun-1.5.1-1.i686.rpm

Here are some screenshots for the fgrun launcher and FlightGear

The flying aircraft