According to the Chief Engineer of the Wing Long I program the UAV uses aluminum alloy to ease repairing in case of damage so that the profitability by mission must be perfectly controlled while Reaper UAV uses composite to reduce the weight and increase the ratio of payload per mission. This is related to difference in terms of industrial capacity, and the vision of tasks to be performed ...
[video=youtube;vMr8GKWzPM8]http://www.youtube.com/watch?v=vMr8GKWzPM8[/video]