Flight Gear 3D simulation

Flight Gear 3d Simulation

git clone git://github.com/ArduPilot/ardupilot.git
cd ardupilot
git submodule update --init --recursive

export PATH=$PATH:$HOME/ardupilot/Tools/autotest
export PATH=/usr/lib/ccache:$PATH
. ~/.bashrc

http://ardupilot.org/dev/docs/setting-up-sitl-on-linux.html