The flight test was conducted in the challenging high altitude environment required for refueling of high altitude long endurance (HALE) unmanned aircraft systems (UAS).
这次飞行测试是在充满挑战的高空环境下进行的，这也是高空长航(HALE)无人机(uas)加油所需的环境。
The Sky-Y aircraft is at its fourth flight-test campaign and it is envisaged it will complete its testing programme by the end of July 2010, with 15 long-endurance flights.
这是Sky-Y飞机的第四次飞行测试，并计划于20107月底完成测试项目，共达15小时的飞行。
The Sky-Y aircraft is at its fourth flight-test campaign and it is envisaged it will complete its testing programme by the end of July 2010, with 15 long-endurance flights.
这是Sky-Y飞机的第四次飞行测试，并计划于20107月底完成测试项目，共达15小时的飞行。
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