免费精品AB,亚洲日韩性欧美中文字幕,鲁丝无码一区二区三区,精品久久久久久成人AV,看av免费毛片手机播放,精品国际久久久久999波多野,又黄又爽又刺激又色的视频,亚洲无线码一区二区三区在线观看
         
        Russia successfully tests advanced Mi-171A2 helicopters in extreme cold weather
                         Source: Xinhua | 2018-01-24 19:45:07 | Editor: huaxia

        Iraqi soldiers take position as they disembark from an MI171 helicopter during a joint land and air training with U.S. soldiers north of Baghdad, March 29, 2010. (AFP PHOTO)

        MOSCOW, Jan. 24 (Xinhua) --

        Quoting a news release issued by the Russian Helicopter Holding of the Rostec State Corporation, Tass news agency said the company has confirmed the successful trials of the latest multi-role Mi-171A2 helicopters in Yakutia, where the temperature was at 50 degrees Centigrade below zero.

        According to the press service, two Mi-171A2 helicopters performed eight ground runs (when engines were switched on without taking off) and 36 flights on special program. The results of tests proved that the systems and avionic device of Mi-171A2 helicopters can be operated in extremely harsh climatic conditions.

        All necessary objective data and documents required for further certification of the helicopter have been obtained, the company added.

        Russian Industry and Trade Minister Denis Manturov earlier described Mi-171A2 as "one of the most anticipated helicopters of the Russian helicopter industry."

        Equipped with engines VK-2500PS-03, Mi-171A2 is a modernized version of Mi-8/Mi-17 helicopter. It is reported that more than 80 improvements were made to the design of the helicopter. The first prototype of Mi-171A2 flight tests took place in early 2014.

        Back to Top Close
        Xinhuanet

        Russia successfully tests advanced Mi-171A2 helicopters in extreme cold weather

        Source: Xinhua 2018-01-24 19:45:07
        010020070750000000000000011100001369215021