发行时间：2015.02.15
总页数：3
编辑：
综保科技
摘要：
cargo uas get a lift
designers pursue conventional and futuristic options
by marc selinger
the u.s. military’s recent deployment of unmanned cargo helicopters to afghanistan highlighted the potential future role of such aircraft. several efforts underway in the united states and overseas are poised to build on that mission. some projects involve traditionallooking helicopters, while others use designs that seem like they flew out of science fiction movies. but they all share the same goal: keepi...
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