Most of us are familiar with the genius of Leonardo DaVinci - his 15th century ideas for submarines, flying machines and the like are legendary.
However, I have not seen any lifesize realisations of his ideas.
This amazing helicopter concept was devised in the 15th century and has many similarities with modern day 'coptors. The advent of the aerofoil wing being perhaps the only key difference.
Those of us who like design cannot help but be impressed with these sketches and to see one made into a life size model is impressive. Have you seen any DaVinci inspired designs recently, why not let us know and we can share the ideas.