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[闲谈] 聊聊波音737MAX的机械设计问题

There's no "ignoring the basic aerodynamic problem of the plane’s 'quick and dirty' engine position/fuselage mismatch," he wrote, and "human factors and the unstable aerodynamics of the 737 MAX have made it inherently unsafe."

我觉得那个飞机的外形设计就有问题,那两个大的引擎放那里就不符合空气动力学原理,然后用软件来纠正鼻子? 这是犯罪啊
给波音发个推特,他们还没理我
江南有丹桔,经冬犹绿林。 岂伊地气暖,自有岁寒心。 可以荐佳客,奈何阻重深。 运命唯所遇,循环不可寻。 徒言树桃李,此木岂无阴。
https://www.boeing.com/commercia ... ftware-updates.page 

读了一下波音的解决方法 - AGAIN 设计问题。。。
江南有丹桔,经冬犹绿林。 岂伊地气暖,自有岁寒心。 可以荐佳客,奈何阻重深。 运命唯所遇,循环不可寻。 徒言树桃李,此木岂无阴。
本帖最后由 not4weak 于 2020-12-11 11:40 编辑

波音呢? 为了省钱,采用了MCAS软件的方法,邪恶啊!所假如我测到了抬头,就用软件来纠正?前两次的事故是左右的ANGLEOFATTACK感应器没有交替确认,就迫使机头下压,然后没有经验的飞行员就觉得不对,使劲FIGHT,最后CRASHED了

而且FAA的监管基本上不明白了,说,波音,你自己给自己认证吧。晕死!

So Boeing produced a dynamically unstable airframe, the 737 Max. That is big strike No. 1. Boeing then tried to mask the 737’s dynamic instability with a software system. Big strike No. 2. Finally, the software relied on systems known for their propensity to fail (angle-of-attack indicators) and did not appear to include even rudimentary provisions to cross-check the outputs of the angle-of-attack sensor against other sensors, or even the other angle-of-attack sensor. Big strike No. 3.
江南有丹桔,经冬犹绿林。 岂伊地气暖,自有岁寒心。 可以荐佳客,奈何阻重深。 运命唯所遇,循环不可寻。 徒言树桃李,此木岂无阴。
本帖最后由 not4weak 于 2020-12-11 11:31 编辑


大家看看比较,这个新的ENGINE比原先大很多,直径增加了一尺。因为变大了,所以必须把它往前挪,否则就会擦地了。 这样的结构,使得飞行员一用力加速,飞机就有自然抬头的倾向。

I’ll say it again: In the 737 Max, the engine nacelles themselves can, at high angles of attack, work as a wing and produce lift. And the lift they produce is well ahead of the wing’s center of lift, meaning the nacelles will cause the 737 Max at a high angle of attack to go to a higher angle of attack. This is aerodynamic malpractice of the worst kind
江南有丹桔,经冬犹绿林。 岂伊地气暖,自有岁寒心。 可以荐佳客,奈何阻重深。 运命唯所遇,循环不可寻。 徒言树桃李,此木岂无阴。
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