Decided to create a Parachute Launching system much like the others available on thingiverse.
This would suit a number of different R/C models and UAV's.
I have the blender files if anyone wants to scale it.
There should be a video explaining it all here.. https://youtu.be/Uzbl6v_VlF4
I have now added the code to my github account here... https://github.com/tobyrobb/Xbee-Parachute