"Mini Air Cooling Fan" system in 1000 ALPS (Advanced Low-Voltage Systems Technology) engine crosswind test, followed by flight tests will be carried out in located in Tucson, Arizona • Rolls-Royce 747 test platform. • Rolls-Royce large commercial engine business and future technology project's chief engineer, said: "We are in CTi Advance and UltraFanTM engine structure," another step forward in the validation process Mini Air Cooling Fan"in system technology. crosswind conditions successfully completed flight tests proved a new fan design performance, and advance to a new stage of the project including flight testing. "Mini Air Cooling Fan"system including carbon / titanium composite fan blades and casing, can so that the weight of each aircraft by up to 1,500 pounds, the equivalent under the premise of not increasing the cost of carrying more than seven passengers.