This is a new type of Helicopter.It's Roterywing is 6ft. long and 6 inches lead to tail edge.The Photo is of the first prototype.But the new and improved version will be airborn soon with double the torqe and r.p.m.s.Have had some calculating done and it should lift-off at 1/4 throttle.So Roll over Sigoski and let Charlie give you the news.A full size version will catch on quick as a personal Aircraft.A 4 stroke 5h.p.generator will be optional for longer flights.It will not pollute at all unless the Generator is running and even then the generator runs at full throttle for 8 hrs. on 31/2 gals. of fuel.It can also be set up to run on many fuels! I personally think that this is a much more efficiante Flying Machine than todays typical Helicopter!!