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第二百六十二章 客机也玩垂直爬升(2 / 2)

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这是一架巨大的飞机,它的机身长度超过六十米,翼展也是如此,当然最引人注目的还是它的机翼下方吊挂着的两台巨大的涡轮风扇发动机。

这么大一架飞机,就靠两台发动机就要飞起来,那推力得多惊人?事实上这架空客a330的机翼下的巨大发动机,无论是通用电气生产的cf6系列,还是劳斯莱斯的湍达700都是推力超过三百千牛的大涵道比涡轮风扇发动机,这才是中国航空工业一直想要追上的目标,在航空发动机领域中国航空工业的确落后太多了。

不要说像这样大推力的涡扇发动机,就是飞豹用的涡扇九现在都还没有完全的国产化,还在努力呢!

当然沈欢也明白,这一切都需要时间,再过二三十年中国必定会追赶上来,未来的c929宽体客机,就将会用上国产的大推力涡扇发动机。

这架空客a330的出现,也是引起一片的欢呼声,这么大一架客机进行飞行表演,那视觉冲击力一定是相当震撼的!

而此时这架空客a330上面的飞行员,也是打开了驾驶室侧的舷舱,朝观众们挥手致意,看来他们非常的有信心。

随着a330客机翼下那两台大推力的涡轮风扇发动机,开始发出强大的轰鸣声,它那庞大的机身也开始在不断地向前加速,那强大的发动机喷出来的气流也是久久不散。

大约滑行了一千多米之后,这架大型客机也是猛然一个旱地拔葱,机头高高昂起,在两台强大的涡轮风扇发动机推动之下,它那庞大的机身,竟然来了一个近乎垂直的爬升!

这个视觉冲击力实在是太震撼了!这么大一架客机,竟然能够和战斗机一样,来个垂直爬升!

观众们也是发出了阵阵惊呼声。

林妙语也惊讶地道:“沈欢,这怎么可能?客机也能垂直爬升?”

沈欢笑了笑道:“这并不是真正的垂直上升,最多也就是六十多度罢了,主要还是视觉误差的原因,让人看起来像是垂直上升。理论上,只要飞机的推重比也就是发动机最大推力与飞机重量的比值大于一,飞机就可以垂直爬升,所以在飞行表演中,我们经常可以看到战斗机的垂直爬升,那是因为战斗机在空载和半油的情况下,推重比一般都是超过一的,比如说咱们的飞豹,它两台发动机推力加起来超过十八吨,而它的半油状态下重量还不到十八吨,所以它能垂直起来。”

林妙语追问道:“那这架空客呢?”

沈欢笑了笑道:“客机和运输机在正常载重的情况下,推重比一般只有零点二左右,但是表演机都是没有载重的,并且只加了少量的燃油,所以推重比会达到零四左右,而空客a330在机翼下的两台湍达七百涡扇发动机,最大推力超过三十吨,两台加起来也就是六十吨了,而它的空重应该在一百吨出头一点,推重比也有零点五了,所以它能够以近七十度的迎角爬升,从观众的视角看上去就像是垂直爬升一样,实际上离垂直爬升还有一定的角度。真正的垂直爬升,机翼是不产生升力的,一般也只有推重比较大的战斗机能做到,像客机和运输机,这个动作实际上是大迎角爬升,它还是靠机翼产生了部分的升力,当然这也是一种极限的挑战,如果推力不够还使劲拉的话,飞机就会失速然后掉下来。”

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