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媒体:C919将走经济适用路线 最快2019年运营

2017-05-06 03:31:14   中国搜索网

在首飞机组中,有一个特殊的岗位——观察员。担任这个岗位的是有着近40年飞行经验的老飞行员钱进,先后飞过近20种机型。“观察员是飞行员的第三只眼睛,或者说是又一道安全防火墙。”试飞中,钱进将在驾驶舱对试飞员和副驾驶进行指导和观察。“我希望C919这款飞机真正成为承载着中国梦,飞得更高、飞得更远、飞得更安全。”钱进说。

PK台

与空客波音相比 C919也不落后

在C919总装下线以后,很多人根本无法理解我国在这个型号上相比于“运10”取得了多大的进步和技术成就,反而认为,我国80年代初期就有这种研制水平,C919只不过是在此基础上购买了一些国外先进部件进行组装而已,这对于C919来说也是够委屈的。要知道运10的参照蓝本是波音707,而C919的直接竞争对手是空客的A320neo和波音的B737MAX,这之间的差异是巨大的!

1。座舱舒适性

通俗点讲,座位越宽越舒适,C919中间座位是特别加宽的,宽度是C919>A320neo>737MAX8,所以就座舱舒适性讲,C919胜!

2。载客量

就载客量来说,对比全经济舱布局,C919是168座位,737MAX8是175座,A320neo是189座,A320neo胜!

3。发动机

A320neo用的Leap 1A和C919用的Leap 1C都是78寸的引擎,涵道比是11∶1,而737MAX用的Leap 1B则只有69寸,涵道比9∶1。但A320neo还可以换PW1100G,风扇尺寸81寸。理论上A320neo>C919>737MAX。在发动机方面,A320neo胜!

4。机身结构和材料应用

这三款机型复合材料的应用比例大致相同。C919采用了承载式风挡,这种新设计目前很流行,787就是这一设计。按波音的说法可以减少一点点结构重量,减少一点阻力。737MAX和A320neo还是旧款。以国内现有水平来说,C919在结构可靠性上追平空客A320neo和波音737MAX是不可能的,但故障率也不会差出一个数量级。

C919的小翼类似于波音787的小翼,而波音737MAX的是那种夹子样的小翼,空客 A320neo的则是鲨鳍小翼。要说哪个好,也就见仁见智了。

但就气动性来说,C919比起竞争对手具有一定优势。它利用先进手段大幅提升了设计效率。C919飞机设计在超临界机翼、增升装置、翼梢小翼、减阻技术和流动控制技术方面取得很大的突破,经风洞试验和不同CFD程序计算验证,机头、后体设计减阻1%,翼梢小翼设计减阻2%,机翼吊挂/发动机一体化设计比竞争机减阻2%,总体达到了C919空气动力设计相对竞争机同比减阻5%的设计要求。

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