Here's a build I started quite some time ago, painted a while later, and just now finished up. A 1/72 Fa 330 gyro-kite.
This particular aircraft had no motor- it was towed behind German U-boats in an effort to extend the sightlines of the low-sitting sub, and the forward motion of the submarine made the rotor auto-rotate, and generate lift.
The problem came when a danger was spotted and the U-boat needed to crash dive. The Fa 330 was immediately cut loose and the sub dived, leaving the pilot to either be picked up later by friendly forces, picked up sooner by the enemy, or picked up somewhere in between by sharks.
This was an about 80% serious scratchbuild, just to see if I could do it. It ain't perfect, but it's good enough from where I'm sitting.
Comments and critisicms are welcome!