Birds are very agile.

人類的夢想─

They fly, not with rotating components,

─像鳥一樣的遨翔。

so they fly only by flapping their wings.

鳥類是非常輕快敏捷的

So we looked at the birds,

它們飛行靠的不是旋轉的機械零件

and we tried to make a model that is powerful, ultralight,

而是藉由振動雙翼飛翔。

and it must have excellent aerodynamic qualities

所以我們盯著鳥類觀察,

that would fly by its own and only by flapping its wings.

企圖建構一個模型

So what would be better than to use the herring gull, in its freedom,

是高功率、超輕型的飛行器

circling and swooping over the sea,

它必須具備極佳的航空動力學的特性

and to use this as a role model?

──能夠自體飛行

So we bring a team together.

而且只靠拍動翅膀。

There are generalists and also specialists in the field of aerodynamics,

那麼有什麼會比使用

in the field of building gliders.

銀鷗（為模型典範）更好！它自由自在地

And the task was to build an ultralight indoor-flying model

在海上盤旋俯衝,

that is able to fly over your heads.

我們以它做為模型主角。

So be careful later on.

我們組成一個團隊,

(Laughter)

團隊中,有萬事通也有來自某個領域的專家

And this was one issue:

有航空動力學領域的專家

to build it that lightweight

也有打造滑翔機的專家。

that no one would be hurt if it fell down.

而任務是製造

So why do we do all this?

一架超輕型的室內飛行模型,

We are a company in the field of automation,

能飛越你們的頭頂。

and we'd like to do very lightweight structures

所以,稍會兒大家請小心

because that's energy efficient,

而且製作時有個議題:

and we'd like to learn more about pneumatics and air flow phenomena.

將它製造得那樣的輕

So I now would like you to put your seat belts on

就沒有人會受傷,

and put your hats on.

如果它掉下來的話。

So maybe we'll try it once --

那麼為何我們要做這些事？

to fly a SmartBird.

我們是一間經營自動化的公司,

Thank you.

想要製作極輕的結構體

(Applause)

因為那符合「能源效率」。

(Cheers)

而且我們想知道更多關於

(Applause)

氣動力學(pneumatics)和氣流現象。

(Applause ends)

那麼現在請你們

(Applause)

繫上安全帶

So we can now look at the SmartBird.

戴上安全帽

So here is one without a skin.

也許我們來試飛一次,

We have a wingspan of about two meters.

讓「聰明鳥」展翅飛翔。

The length is one meter and six,

謝謝大家

and the weight is only 450 grams.

(掌聲響起)

And it is all out of carbon fiber.

(掌聲又起)

In the middle we have a motor,

(掌聲如雷)

and we also have a gear in it,

那我們現在

and we use the gear to transfer the circulation of the motor.

就來看看「聰明鳥」的結構。

So within the motor, we have three Hall sensors,

這有一隻沒有外殼包覆的鳥模型

so we know exactly where the wing is.

展翼約二米長

And if we now beat up and down --

身長一米六,

(Mechanical sounds)

而重量

We have the possibility to fly like a bird.

只有450克

So if you go down, you have the large area of propulsion,

骨架材質是碳纖維

and if you go up,

在中間有個發動機

the wings are not that large,

在內部還有齒輪

and it is easier to get up.

而且我們用齒輪

So, the next thing we did,

協助馬達傳動。

or the challenges we did,

在發動機內部,有三個霍爾感測器(Hall sensors),

was to coordinate this movement.

所以能確切辨識

We have to turn it, go up and go down.

翅膀拍動的位置

We have a split wing.

若翅膀能上下拍動

With the split wing,

就有可能

we get the lift at the upper wing,

像鳥那樣飛行。

and we get the propulsion at the lower wing.

翅膀向下拍,就會有充裕的空間作推進

Also, we see how we measure the aerodynamic efficiency.

翅膀向上揚起,

We had knowledge about the electromechanical efficiency

翅膀的幅度就沒那麼大

and then we can calculate the aerodynamic efficiency.

那就更容易起飛。

So therefore, it rises up from passive torsion to active torsion,

所以,接下來我們得做的

from 30 percent up to 80 percent.

或者說我們挑戰的下一個任務是

Next thing we have to do,

調節翅膀的動作

we have to control and regulate the whole structure.

讓翅膀可以上下振動

Only if you control and regulate it,

我們將羽翼分節。

you will get that aerodynamic efficiency.

因羽翼分節

So the overall consumption of energy

上翼可協助上升

is about 25 watts at takeoff

下翼產生推進力

and 16 to 18 watts in flight.

我們也監管

Thank you.

我們測量「空氣動力效率」的過程

(Applause)

我們熟諳

Bruno Giussani: Markus, we should fly it once more.

機電效能,

Markus Fischer: Yeah, sure.

我們能計算

(Audience) Yeah!

空氣動力效率,

(Laughter)

測得結果是,

(Gasps)

它升起時從被動扭力轉至積極扭力

(Cheers)

效能從百分之三十

(Applause)

提升至百分之八十