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  • Renaissance artists and all around smart cookie Leonardo da Vinci famously painted the Mona Lisa and the Last Supper.

    文藝復興時期的藝術家和所有的聰明的餅乾萊昂納多-達-芬奇著名的繪畫蒙娜麗莎和最後的晚餐。

  • But he also may have been the first person to design one of these.

    但他也可能是第一個設計出這些東西的人。

  • Nope, not the Wakeboard.

    不,不是Wakeboard。

  • That thing in the sky, also known as a helicopter.

    天空中的那個東西,也叫直升機。

  • And it's not only Wake Borders the helicopter pilots are helping out the best can use their skills to save cafs from frozen lakes.

    不僅僅是Wake Borders,直升機飛行員也在幫助最好的人可以用他們的技能從冰凍的湖泊中拯救咖啡館。

  • There you go.

    這就對了

  • DaVinci was ahead of his time, although there was less cow rescues in his pictures from memory.

    達文西是超前的,雖然記憶中他的照片裡少了牛的救助。

  • But before a pilot can head off for a little cow skimming, they need to know their Helly Science helicopter generates lift from its rotating blades.

    但在飛行員出發去溜牛之前,他們需要知道他們的 "直升機"(Helly Science)的旋轉葉片會產生升力。

  • Adjusting the collective pitch changes the angle of all blades simultaneously, allowing the helicopter to increase or decrease in altitude.

    調整集體俯仰,可以同時改變所有葉片的角度,使直升機增加或減少高度。

  • Adjusting the cycling pitch will change the angle of each blade at specific parts of its rotation, creating more lift on one side, leading to forwards backwards and side to side motion.

    調整單車間距會改變每個葉片在其旋轉的特定部位的角度,在一側產生更多的升力,從而實現前後和左右運動。

  • Okay, changing the pitch of the tail rotor blades rotates the helicopter left or right like a rudder.

    好了,改變尾槳葉片的螺距,就像方向盤一樣讓直升機向左或向右旋轉。

  • Thus, you need to master a combination of cyclic pitch, collective pitch and tail rotor pitch for successful flight.

    是以,要想成功飛行,需要掌握環形槳距、集體槳距和尾旋翼槳距的組合。

  • Okay, let's take it one step at a time.

    好吧,讓我們一步一步來吧。

  • I'm straight it up.

    我直接了當了。

  • First, we need to take off, which is easier said than done in a homemade car copter.

    首先,我們需要起飛,對於自制的汽車直升機來說,說起來容易做起來難。

  • Well, this doesn't look dangerous.

    嗯,這看起來並不危險。

  • Please fasten your seatbelts as we may be experiencing some turbulence and a touch of impact force.

    請繫好安全帶,因為我們可能會遇到一些亂流和一些衝擊力。

  • The faster he's pulled, the quicker the blades auto rotate, which eventually creates enough lift to raise him.

    他被拉得越快,葉片自動旋轉的速度就越快,最終形成足夠的升力將他抬起來。

  • But as the car copter rotates to the side, that lift force makes it travel sideways faster than his runner can correct.

    但當汽車直升機向側方旋轉時,那股升力使其側向行駛的速度超過了他的運行速度糾正。

  • Luckily, the pilot was fine, which is more than could be said for the Reliant Robin.

    幸運的是,飛行員沒有問題,這比信天翁羅賓號要好得多。

  • Maybe best stick to a proper helicopter with an actual tail rotor.

    也許最好的辦法是用真正的尾旋翼做一架合適的直升機。

  • This research pilot is using a combination of collective pitch to descend and cycling pitch to move forwards now for the perfect landing.

    這名研究型飛行員採用集體俯仰下降和循環俯仰相結合的方式,現在向前移動,以實現完美降落。

  • Ah, that wasn't important, was it?

    啊,這並不重要,是嗎?

  • A sudden dip and collective pitch causes blades to intersect with the power line, so it's shorted.

    突然的俯衝和集體俯衝會導致葉片與電力線相交,所以會被短路。

  • But I don't think anyone noticed.

    但我想沒有人注意到。

  • Yeah, that might be a bit of a giveaway.

    是啊,這可能是一個位的贈品。

  • Yes, like take off.

    是的,像起飛。

  • Coming in for a landing could be the trickiest skill nailed that one, though.

    來的落地可能是最棘手的技能釘,不過。

  • The pilot adjust the cycling pitch to create more lift on the right hand side, drifting the helicopter to the left.

    飛行員調整單車間距,在右側產生更大的升力,使直升機向左漂移。

  • But the building has possibly affected the airflow and his aerodynamics, so the pilot decides to teach it a lesson.

    但這棟樓有可能影響了氣流和他的空氣動力學,所以飛行員決定給它一個教訓。

  • I mean, I could see it coming, but then again, I am cycling.

    我的意思是,我可以看到它的到來,但話說回來,我是騎自行車。

Renaissance artists and all around smart cookie Leonardo da Vinci famously painted the Mona Lisa and the Last Supper.

文藝復興時期的藝術家和所有的聰明的餅乾萊昂納多-達-芬奇著名的繪畫蒙娜麗莎和最後的晚餐。

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B1 中級 中文 直升機 葉片 飛行員 單車 調整 速度

直升機如何飛行|愚蠢的科學。荒謬的失敗 (How Helicopters Fly | Science of Stupid: Ridiculous Fails)

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    林宜悉 發佈於 2020 年 11 月 29 日
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