The uavs are manufactured by general atomics aeronautical systems , inc.

这些无人飞机是通用原子航空系统公司制造的。

The plane can move 20 or 30 feet up and down , which is quite dramatic for passengers but is of no consequence in aeronautical terms .

飞机可能上下移动20到30英尺，这对乘客来说太夸张了，但是从航空学的角度来看没有什么问题。

The research is published online in the international journal of aeronautical and space sciences .

研究发表在国际航空和空间科学日报的网站上。

This drone , which has a wingspan of 1.2 metres , incorporates a geodetic structure-a lattice-like frame developed in the 1930s by barnes wallis , a british aeronautical engineer .

这种无人驾驶飞机，它的翼展1.2米，采用大地结构---一种由英国航空工程师巴恩斯沃利斯在20世纪30年代发明的一个格状框架。

Alestis , an aeronautical supplier to aircraft manufacturers , filed for bankruptcy earlier this month after failing to reach an agreement with banks to refinance its debts .

这个月早些时候，alestis，一家针对飞机制造厂商的航空业制造商，在未能与银行达成债务再融资协议后申请了破产。