Zaretto/fg-aircraft — pull request #2 by onox (2014-11-09 13:24:11+00:00)
Title: Use external engine sounds in cockpit when canopy is open

* Added canopy/position-norm to flight recorder
* When opening the canopy, switch to external sounds
- One value in the code (in Systems/canopy.xml) controls when it switches from internal to external sounds
- You can modify this value if you want or replace it with a \ element if you want to define the value in the -set.xml file
- Avionics 400 Hz, nose wheel rumble, and high-alpha-airflow have been left untouched and do not depend on canopy state