<tt id="6hsgl"><pre id="6hsgl"><pre id="6hsgl"></pre></pre></tt>
          <nav id="6hsgl"><th id="6hsgl"></th></nav>
          国产免费网站看v片元遮挡,一亚洲一区二区中文字幕,波多野结衣一区二区免费视频,天天色综网,久久综合给合久久狠狠狠,男人的天堂av一二三区,午夜福利看片在线观看,亚洲中文字幕在线无码一区二区
          BIZCHINA> Center
          Helicopter sector to grow faster
          By Xin Dingding (China Daily)
          Updated: 2008-06-10 09:22

          Having demonstrated an "irreplaceable" role in the recent disaster-relief efforts in Sichuan province, China's helicopter industry is expected to develop more rapidly in the coming years.

          The May 12 earthquake and subsequent landslides toppled many buildings, blocked roads, destroyed bridges and damaged railways, leaving thousands of people buried under debris waiting for relief.

          In the days following the disaster, helicopters demonstrated their unique advantages, which are unmatched by any other means of transportation.

          They proved a usefulness beyond that of even fixed-wing planes, because they needed only a few dozen sq m of space to land and take off. In addition, they can hover over one spot and can even move backward, University of National Defense professor Li Daguang explained.

          However, currently, the number of helicopters in China is small relative to its geographic size, he added.

          According to statistics provided by China Aviation Industry Corporation II (AVIC II) assistant chief engineer Wang Bin, China has about 160 civilian-use helicopters, compared with more than 580 in Brazil, 1,600 in Canada, 3,000 in Russia and 10,000 in the United States.

          In addition, only a small number of these are domestically manufactured, and most are imported from the US, Russia and France, he said.

          AVIC II is China's only helicopter manufacturer. Its annual production stands at 40 to 50 helicopters of three models in addition to helicopter parts for foreign companies. Most of the production is done at AVIC II's two bases in Harbin, capital of Heilongjiang province, and Changhe city, Jiangxi province.

          But only 12 of the more than 100 military and civilian helicopters used in the current disaster-relief efforts were made by AVIC II.

          Because none of the 12 made-in-China choppers were heavy-lift models, TV coverage of the relief efforts was flooded with images of Russian-made Mi-26 heavy helicopters, which were used to transport bulldozers and excavators to the Tangjiashan quake lake's banks.

          Li Daguang with the University of National Defense believed China should develop heavy-lift helicopters and expand the capabilities of its existing mid-sized models.

          Wang explained China had previously lacked the economic capacity to develop heavy-lift helicopters.

          "Just like large passenger planes, developing heavy helicopters demands huge investments and technological support," he told China Daily.

          But with China's GDP growing and technology accumulating from previous projects, now might be a good time to consider developing 20-ton heavy helicopters, Wang said.

          Past international experience suggests developing such helicopters would require at least 10 billion yuan ($1.44 billion) and take between five and eight years, he added.

          To increase demand, China should expand the functionality of the choppers, he said.

          Estimates put the number of helicopters China would need by 2010 at 2,000, but that might not equate to the number of actual orders, Wang explained.

          Limited airspace has placed China's general aviation sector - the country's major helicopter user - far behind the scheduled flights sector. Today, only 15 of China's 40 general aviation firms own choppers, he said.

          However, since helicopters' usefulness was demonstrated in post-quake the rescue and relief efforts, the industry would undergo rapid growth in the future, he added.


          (For more biz stories, please visit Industries)

           

           

          主站蜘蛛池模板: 亚洲大老师中文字幕久热| 国产成人拍精品视频午夜网站| 国产精品国语对白一区二区| mm1313亚洲国产精品| 色九九视频| 国产一精品一av一免费| 国产一级片在线播放| 久久精品国产福利一区二区| 国产在线精品一区二区在线观看| 狠狠亚洲色一日本高清色| 怡春院久久国语视频免费| 成人国产精品日本在线观看| 亚洲日韩欧美丝袜另类自拍| 亚洲欧洲日韩国内高清| 强奷漂亮人妻系列老师| 精品无码视频| 国产精品夫妇激情啪发布| 人妻少妇精品系列一区二区| 亚洲成av人最新无码不卡短片| 国产熟睡乱子伦午夜视频| 欧美牲交a欧美牲交aⅴ免费真| 377p日本欧洲亚洲大胆张筱雨| 亚洲日本乱码熟妇色精品| 欧美一本大道香蕉综合视频| 亚洲日本中文字幕乱码在线电影| 国产四虎永久免费观看| 国产精品无圣光一区二区| 国产在线国偷精品免费看| 乱色熟女综合一区二区| 日韩精品三区二区三区| 99热门精品一区二区三区无码| 久久伊99综合婷婷久久伊| 亚洲欧美成人久久综合中文网 | 人人妻人人澡AV天堂香蕉| 一本久道久久综合中文字幕| 男人av天堂专区| 成人精品大片—懂色av| 91老肥熟女九色老女人| 国产精品乱码一区二区三| 狠狠色综合久久狠狠色综合| 亚洲码欧洲码一二三四五|