ADM-201 dump PMP dumps pdf SSCP exam materials CBAP exam sample questions

为什么民航飞机都是白色的? – 译学馆
未登录,请登录后再发表信息
最新评论 (0)
播放视频

为什么民航飞机都是白色的?

REASON WHY PLANES ARE PAINTED WHITE! Explained by CAPTAIN JOE

亲爱的朋友们 欢迎继续收看
Dear friends and followers, welcome back to my channel,
今天我们会谈到
today we’ll talk about why
为什么多数民航飞机
most commercial airplanes are painted
涂的都是白色外漆
in shiny white colours and the question arises
同时引出了
Why paint airplanes in the first place? That,
一些关于飞机涂层的有趣事实
and a few more interesting facts about airplane
让我们开始吧
paint jobs in today’s video, so let’s get painting!
飞行员广播rap
[Pilot radio chatter and music]
当一架新飞机出厂时
When a brand new plane rolls out of the factory,
通常涂有绿色防锈涂层
they are very often painted in a greenish, anti-corrosive paint
飞机以这样的形象
so that the plane can be flown or
进入最后的装配流水线和涂装车间
moved to the final assembly line and paint shop. Therefore,
所以它们被称作绿皮机
they are nicknamed the green jets
对于一般的飞机迷可能比较陌生
and are a rare sight for plane spotters.
拿空客A380 来说
But once the plane arrives at the paint shop –
当飞机进入涂装车间后
let’s take an Airbus A380 as an example – it takes approximately
34台涂装机分3班 在15天里
34 painters working three shifts, each day for 15
对飞机进行冲洗 涂装工作
days to wash, prepare, and paint the plane.
在6000个工时完成后
After six thousand working hours they’ve roughly applied
大概在飞机上涂上了1100千克的涂料
1,100 kilograms of paint onto the plane
而且根据飞机使用和清洁情况
And that procedure needs to be
出厂后每7~8年
repeated every seven to eight years
就要重新进行一次涂装
depending on the use of the plane and cleaning schedule.
在最少两层涂装后
So after applying a minimum of two layers the plane
飞机净重就会增加几磅
gains a few more pounds to its dry
如果有第三层涂装(如公司LOGO)
operating weight and even more if a third, more colourful layer
飞机重量会增加更多
is sprayed onto it such as the company logo etc.
所以给飞机涂装
Therefore putting fancy detailed liveries
不光花了喷漆的钱
onto the planes is not only costly at first but
而且增加了飞行成本
also increases the operating costs.
例如波音737的涂料总重500kg
For example a Boeing 737 paint job can be as heavy
这相当于有6位乘客
as 500 kilograms, which equals six passengers
没有买票 还增加了燃油消耗
Who aren’t paying for their flight and increasing the fuel consumption.
既然成本这么高
The question arises, so why even bother painting the planes at all?
那为什么还要喷漆呢?
So far it’s just expensive!
二战之后 大部分飞机都没有喷漆
After the second world war paintless planes were very common.
美国航空公司更是以其闪闪的铝制机壳闻名
American Airlines was particularly famous for their shiny aluminum look.
但在省钱的同时
But while it saves money it
机体暴露在了外界环境之下
left the aircraft exposed and unprotected
在严劣天气下尤其容易被腐蚀
especially in harsh weather conditions.
这样一来为了避免飞机被腐蚀
Subsequently the money they saved on fuel they
在燃油上省下的钱
had to use to frequently polish the surface
转眼又花到了机体抛光上
otherwise it would have degraded and become tarnished
而且有很多乘客反映
and besides that passengers getting on board complained
铝制外壳太晃眼了
that the reflected glare hurt their eyes.
矫情
First world problems.
因此大部分公司选择了
So very often airlines choose to maintain a clean,
整洁 干净的白色涂装
white look for their airplanes.
而且白色机身更容易发现燃油泄漏问题
A white paint, job unveils oil or other fluid leaks more easily,
凹陷和裂缝也更加容易被发现
dents and cracks can Also be located quickly.
复杂花纹的喷漆
The price for a colourful,
根据尺寸和细节上的不同
paint job can vary from $ 50,000 to
费用一般在5到20万美元之间
$200,000 depending on size and detail. Furthermore,
此外航空公司经常把飞机
airlines often end up selling the aircraft to other carriers
转卖给别的运输公司
And they will find it harder to do so
但除了白色涂装的飞机其它都很难卖出
if the colour scheme is anything but white.
有时候你会看到一架
And sometimes you spot these airline hybrids
印有有两个不同公司LOGO的飞机
Meaning you see the remains of a previous livery mixed together
一新一旧
with a new logo. uhh,
看着非常LOW
it just looks horrible.
有报告显示在空难之后
More reason for white airplanes are reports by search rescue teams
白色飞机的残骸更容易被发现
Who find it easier to identify white airplane debris
有传言说 比起彩色飞机
after a crash and rumours have it that
白色飞机对比度更高
White airplanes are less prone to bird strikes as they are higher
鸟儿更容易发现
in contrast compared to planes with colourful paint jobs. Therefore,
有更长的时间来躲避飞机
birds have more time to react
因此白色飞机更安全
and can so avoid the approaching plane.
要是这么说的话
That to me means military airplanes,
似乎深色 迷彩的军用飞机
which are painted in darker colours or camouflage colours
比民航飞机更容易撞上鸟了
would encounter more bird strikes than commercial airliners.
也许有军机飞行员能解答我的困惑
Maybe a military pilot can comment on that please,
我个人对这个传言持怀疑态度
I highly doubt that rumour, by the way.
接下来我们要讲述
But the primary reason why commercial jet airplanes
民航飞机使用白色涂装的首要原因
are painted white is shown in this video right here
凭借手持激光测温仪
Using a laser temperature instrument
我们能够测量出
We were able to measure the surface temperature
这辆黑车表面温度为72℃
of a black painted car indicating 162 Fahrenheit.
而这辆停在旁边的白车表面温度则为49℃
Comparing that to a white car parked right next to it shows 120 Fahrenheit.
相差约23℃ 难以至信吧
A temperature difference of nearly 50 Fahrenheit. How is that possible?
白色喷漆的反射率为黑色喷漆的12倍
White paint is 12 times more reflective than darker colours.
考虑到飞机一次飞行中表面温度变化很大
Consider the temperature changes an airplane’s surface has to undergo during each flight.
在飞行状态可能低至57℃
Cruising temperatures can be as low as minus 57 degrees,
而降落时可高达45℃
and on landing it can be as hot as 45 degrees.
加上黑色喷漆
Plus the ascending heat
导致的温度上升
of black apron surfaces warms up the plane even more,
一次飞行的温差可能高达100℃
and all this can create a temperature difference up to a 100 degrees.
额外增加的20℃可能会
Adding another 20 degrees due to black paint will cause a lot
加剧金属膨胀 随着时间的推移
of thermal expansion stress on the metal and paint.
可能导致细微裂纹
With time that will create tiny hair cracks.
现如今 在大型客机中
And today’s modern airliners,
部分结构使用的复合材料更难以
Which are partly built out of composite materials
补偿温度产生的膨胀压力
Have real problems compensating for thermal stress.
你可以理解为飞机为了凉快
So you could say that the airplane wears sun block rather
穿了防晒衣而非黑T恤
than a black t-shirt to protect itself from the sun. And,
协和式客机两翼展开相当于一个棒球场大
as always, Concorde hits it out of the ballpark.
在飞行时机翼温度达到了惊人的127℃
Engineers had to develop a unique paint especially for Concorde
工程师不得不专门为协和式客机研制出一种涂料
because the wings heated up to 127 degrees during cruise flight.
提到热膨胀
Talking about thermal expansion right there. Side-note,
顺便一提
ever thought
你想过为什么近赤道国家的人更喜欢开白色车吗?
about why countries near the equator prefer driving around in white cars?
就是这个理儿
Think about it.
以上就是本期内容 感谢收看
That’s it for today thank you very much
别忘了一个优秀的飞行员应该终生学习
for your time and don’t forget a good pilot is always learning.
祝你好运
Wishing you all the best.
我是机长老乔 下周见
See you next week, your captain Joe.
音乐 起!
[music]

发表评论

译制信息
视频概述

机长老乔系列

听录译者

收集自网络

翻译译者

ID269421

审核员

审核员_BZ

视频来源

https://www.youtube.com/watch?v=659vqjkwvP0

相关推荐