Ewatt Tests New Engine and UAV Helicopter at High Altitudes.

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On February 27th, 2015, the Scientific Research Team of Ewatt AeroSpace undertook a mission traveling from Wuhan China to the high plains near Tibet to conduct flight tests of one of the latest UAV helicopters designed by Mr. Dennis Fetters, the EWZ-1B. The team has reported back that they were successful to fly at 3500 meters (11,483 feet) without any modifications except re-jetting the engine for that altitude. The EWZ-1B is proving to be capable of fully operating at that altitude with performance margin to spare.
Although the Scientific Research Team is battling the cold weather and dust storms, they are continuing further testing of the EWZ-1B by conducting fully autonomous missions at that altitude, as well as payload capability testing. Later in the week the team will relocate to 4000 meters for further testing.
The EWZ-1B is the smallest UAV helicopter that Mr. Fetters has designed, primarily to compete and surpass the performance of the Yamaha R-MAX drone helicopter made in Japan. The EWZ-1B  has an empty weight of only 34kg, yet just recently proved its capability of operating 4 hours on one tank full of fuel from its internal fuel supply at normal altitudes, as well as flight demonstrations with a gross weight of 86kg.
The first five fully autonomous EWZ-5B UAV helicopters were delivered to customers on February 7th, 2015. Mr. Fetters will soon be introducing his new EWZ-2A UAV helicopter, which has an empty weight of 95kg and gross operational weight of 220kg, which is designed to compete and surpass the performance of the world famous Schiebel S-100 UAV helicopter made in Austria.
During this same time, the Scientific Research Team took with them the new Ewatt 32hp single cylinder UAV engine designed by Mr. Guido Polidoro to be tested at these high altitudes. The results are good and as expected by Mr. Polidoro, and will provide the Ewatt UAV’s with not only better performance but better reliability.
http://www.e-uav.com/