Here's a Z and a Y sliced version - might also be useful...
The slices ~6" - I did that so it's symmetrical...
Sorry for the gap in communication - even I have to go to bed...Helicopter body shell by EliseiDesignZY.skpHelicopter body shell by EliseiDesignZY.png

@tig said:

You could probably find a suitable free model on the 3D Warehouse that would do ?
http://sketchup.google.com/3dwarehouse/search?q=helicopter+huey&styp=m&btnG=Search&reps=2
http://sketchup.google.com/3dwarehouse/details?mid=5ae11b134934f08a643ae903098a314&prevstart=0 ???
Perhaps you could do a bit of adjusting, simplification etc...
Then use Slicer ruby to make the slices - it even lays them out for you to cut out - and 'bob's your uncle' 😄
http://forums.sketchucation.com/viewtopic.php?p=16694#p16694

Bob's your Uncle: roughly translates to 'there ya go - that's all there is to it!' Just press this big red button that says 'Launch Missile', and "Bob's your uncle".