亚洲免费av电影一区二区三区,日韩爱爱视频,51精品视频一区二区三区,91视频爱爱,日韩欧美在线播放视频,中文字幕少妇AV,亚洲电影中文字幕,久久久久亚洲av成人网址,久久综合视频网站,国产在线不卡免费播放

        ?

        TOUGH AS HERCULES

        2017-04-13 08:50:34JeanLin,ZengJian
        空中之家 2017年4期
        關(guān)鍵詞:起落架雄鷹輪子

        TOUGH AS HERCULES

        Landing gears to an aircraft are what claws are to an eagle. They are the only parts that support the entire aircraft when it takes off or lands.

        起落架——撐起機(jī)身的大力士

        人們常常羨慕雄鷹翱翔長(zhǎng)空的灑脫,卻忽略了它們行走在陸地上的姿態(tài)。若拿振翅高飛的雄鷹比喻飛機(jī),那么起落架便是那剛健有力的雙足。它是唯一一種支撐整架飛機(jī)的部件,因此是飛機(jī)不可或缺的一部份;沒(méi)有它,飛機(jī)便不能在地面移動(dòng)。

        Text and translation by Jean Lin Photos by Zeng Jian

        Why do planes have feet?

        1. To assist an aircraft in standing and parking, 2. To make an aircraft taxi when it takes off or lands 3. To withstand the gravitational forces when an aircraft lands and to shorten the stopping distance by the way of brake pads. Take the A380 or B747 for example, the four main landing gears need to bear the weight of 560 tons when the aircraft is still parked. The weight will sharply increase to 1000 tons when the plane taxis or accelerates forcefully.

        飛機(jī)為什么要長(zhǎng)腳?

        1.支撐停放狀態(tài)的飛機(jī);

        2.起飛時(shí)的滑行;

        3.著陸時(shí)承擔(dān)重力加速度,同時(shí)利用輪軸里的剎車片縮短滑跑距離。以380或者747為例,飛機(jī)靜止時(shí),機(jī)身上的四個(gè)主起落架需要承受560頓的重量,而飛機(jī)加速滑行時(shí),承受的重力則增至1000噸。

        How Tough are They?

        Take the A380 as an example, the mirror surface of the shock absorber is sprayed with liquid material under a temperature of about two thousand degrees, which greatly improves the hardness of the shock absorber. Meanwhile, the tyres are very special because they can endure temperatures below -40 degrees Celsius or above 71 degrees Celsius.

        起落架的材質(zhì)有多牛?

        南航目前最大的客機(jī)A380的實(shí)用輪胎的載荷達(dá)了到每個(gè)能承受七萬(wàn)磅之重的強(qiáng)度。這種輪胎的材質(zhì)極為特殊,能夠承受-40℃以下和71℃以上的苛刻條件,其爆破壓力高于額定內(nèi)壓4倍以上。

        Two-axle, Four-wheel Main Gear of Boeing 787 Aircraft

        波音787雙軸四輪主起落架

        Landing gears help allocate average weight to each wheel. This greatly disperses the impact force generated by the contact between the wheels and the runway when the aircraft takes off and lands.

        日趨完美的起落架結(jié)構(gòu)及分布形態(tài),不僅可將結(jié)構(gòu)重量平均分配到每個(gè)輪子上,還可以分散飛機(jī)起飛降落時(shí)輪子與地面接觸時(shí)造成的沖擊力,同時(shí)也降低了對(duì)跑道的要求。

        Most advanced aircraft nowadays adopt a “fly-by-wire system” and “avionics integrated system” to operate landing gears. These systems are more accurate and more efflcient.

        目前起落架控制系統(tǒng)方面已經(jīng)采用了電傳操縱技術(shù)和起落架電子綜合控制技術(shù),通過(guò)計(jì)算機(jī)控制整個(gè)起落架的收放,從控制的角度而言,它更精確,效率更高,故障率更低,位置也更準(zhǔn)確。

        Wheel機(jī)輪

        The airplane is equipped with wheels for taxiing on the runway. All wheels are installed with tubeless tyres, with good toughness and high durability. They help to absorb heat from impact or friction. Each wheel will bear up to 70,000 tons of load when the aircraft lands. They will also produce the necessary braking force to effectively stop the aircraft.

        猜你喜歡
        起落架雄鷹輪子
        兩個(gè)輪子“走路”
        飛機(jī)秘密檔案
        沒(méi)有輪子的挖挖
        幼兒園(2020年22期)2020-03-29 02:17:54
        一種多旋翼無(wú)人機(jī)起落架快速插接結(jié)構(gòu)
        讀北島:一只輪子,尋找另一只輪子
        鄶振明 (國(guó)畫(huà))《雄鷹》
        康巴雄鷹
        自由轉(zhuǎn)動(dòng)
        畫(huà)中話
        焦點(diǎn)(2014年1期)2014-01-16 09:27:04
        某型教練機(jī)起落架信號(hào)電路改進(jìn)設(shè)計(jì)
        教練機(jī)(2013年3期)2013-10-11 02:30:30
        黄色av一区二区在线观看| 亚洲av无码av日韩av网站| 国产黄色片在线观看| 2020最新国产激情| 国产一区二区毛片视频| 国产情侣自拍在线视频| 亚洲一区二区三区四区五区六| 一个人看的视频www免费| 精品视频入口| 大屁股少妇一区二区无码| 亚洲素人av在线观看| 亚洲男人av天堂久久资源| 日韩av东京社区男人的天堂| 色综合自拍| 人妻少妇精品视频中文字幕国语| 漂亮人妻被强了中文字幕| 久久99国产精一区二区三区| 国产欧美亚洲精品a| 色综合久久丁香婷婷| 日本人妻伦理片在线观看| 91精品国产色综合久久| 亚洲色精品aⅴ一区区三区| 婷婷五月综合缴情在线视频| 狠狠狠狠狠综合视频| 中文字幕精品乱码一二三区| 性色视频加勒比在线观看| 欧美粗大猛烈老熟妇| 亚洲av不卡电影在线网址最新| 国产精品人人爱一区二区白浆| 中文字幕亚洲视频一区| 欧美日韩国产码高清综合人成| 另类欧美亚洲| 精品久久久亚洲中文字幕| 亚洲中文字幕在线第六区| 亚洲va韩国va欧美va| 人妻少妇边接电话边娇喘| 亚洲午夜成人片| 精品亚洲视频免费观看网站| 包皮上有一点一点白色的| 先锋影音最新色资源站| 国产精品原创永久在线观看|