blender to flightsim suggestions wanted

Hi all

I am a teacher using blender and would like to experiment with students using blender to create models for use in a flight sim package.

I have been looking at X-plane and Flightgear as possible candidates for this project, can anyone recommend either of these, or suggest an alternative worth looking at? X-plane looks like it may be better to integrate models into but Flightgear is opensource.

Any other recommended combos of modelling in blender and importing into a pre existing game wold be much appreciated. (driving games, adventure games etc) I am looking for solutions that don’t require too much coding.

We are using mac osx.