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西北大学太阳能汽车团队 – 译学馆
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西北大学太阳能汽车团队

Northwestern Solar Car Team: Hands-On Engineering

红序教育
(电子乐)
(bouncy electronic music)
*西北大学太阳能汽车团队*
– 我是Alexander Martin
– My name’s Alexander Martin.
– 我是Dan Li
– My name is Dan Li.
– 我是Alex Silver
– I’m Alex Silver.
– 我是Kerui
– My name is Kerui.
– 我是西北大学一名大四生
– And I am a senior here at Northwestern University.
我是双学位生 攻读机械工程
I’m a dual degree student studying mechanical engineering
以及音乐学院的小提琴演奏
and violin performance in the music school.
– 我是大四生 即将毕业
– I am a senior, ready to graduate,
学的是机械工程
studying mechanical engineering.
– 我是大四生 专业是
– I am a senior, majoring in
材料科学与工程
material science and engineering.
– 我是学计算机科学的
– I’m majoring in computer science.
– 我是西北大学太阳能汽车
– And, I’m the current project manager
团队目前的项目负责人
of the Northwestern Solar Car Team.
– 我是团队的首席机械工程师
– I am the chief mechanical engineer on the team.
– 我作为资深成员
– As a senior mechanical member,
主要管理各种子项目
I manage individual projects as they come up.
– 我是太阳能汽车团队的宣传经理
– And, I’m the publicity manager for the Solar Car Team.
– 太阳能汽车团队是由一群学生
– So, the Solar Car Team was started by a group of students
1997年在西北大学创立
in 1997 here at Northwestern University,
当时有大概5个学生和3个顾问
like, probably five students and three advisors,
他们聚到一起 想参加
who got together and wanted to participate
太阳能汽车赛
in the solar car racing.
太阳能汽车赛兴于70年代中期
Solar car racing has been around since the mid-70s.
– 我们团队主要参加一个年度赛车
– The Solar Car Team primarily competes in an annual race.
是个年度场地赛
It is a annual track race,
——国际太阳能汽车大奖赛
the Formula Sun Grand Prix.
基本上参加的条件是
Basically, the premise of the race is that,
开始时电池是充满的状态
at the beginning, you start off with a full battery pack,
但比赛开始后
that is fully charged, but then once the race begins,
在接下来的三天
for the next three days,
或五天的全国赛中
or five days for the cross-country race,
所用能源必须来自太阳
all your energy must come from the sun,
电池板必须安装在车上
and the solar array must be attached to your car.
他们会没收你的电池
So, basically, they impound your batteries,
这样就不能通过其他方式充电
they make sure you’re not charging them through other means,
最根本的一点是
but it’s essentially,
在用完最后能量的同时
using every last drop of energy you have
你还必须让车跑得尽量快
to make a car go as far as you can.
所以设了两种比赛
So, there’s the two different races.
场地赛里汽车自动驾驶
The track race, it drives by itself,
当然了也有其他队的车
there’s obviously other teams driving the circuit
在同时跑圈 制约了你的速度
at the same time, so that limits the pace,
但你可以基于效能
but mostly you just set your speed
自设速度
based on what’s most efficient.
第二种就是全国公路赛
And then, over the road, the cross-country race,
有一整个护卫车队 先导车和救护车
we have a whole convoy, lead car and a chase car,
我认为在车队里还是太阳能车决定了速度
and at that point, I think, it’s still the solar car that sets the speed,
因为我们想让它们发挥最大效能
’cause we want them to get their max efficiency.
-团队每个人都开过这车
– Everybody on the team gets to drive the car.
我们没找到体重最轻的
We don’t find the lightest person.
所以在条例里会写到
So, in the regulations, it has that,
想开这个车的人
if you wish to drive the car,
如果体重低于80千克也就是176磅
if you are under 80 kilograms, or 176 lbs,
那么你得拿一袋铅块
basically, you get a bag of lead shot,
这样能帮你达到统一体重
where they add to you to ballast you to the same weight,
所以每个人都能开这车
so, everybody gets to drive the car,
除非是 我的意思是
unless you’re, I mean, even if,
我比那个重
I weigh more than that, so.
这是我设计的 所以我肯定要开
I designed it, I’m saying I’m gonna drive it. (laughs)
– 从学术角度
– Academically, there’s no sort of course
没有哪门课能比做这个
where I would be learning the variety of
更能让我学到多项技能了
skills that I’ve learned through this.
– 课堂上你会学到很多
– In classes, you primarily have a lot of theory,
关于工程及应用工程的理论
in terms of engineering and applied engineering,
但太阳能汽车团队能让你
but the Solar Car Team really allows you
将课堂所学
to take what you’ve learned in the classroom
实实在在得以应用
and actually be able to physically apply it,
以此检验是否行得通
and see what works, what doesn’t work,
因为当你在黑板上
because it’s very different
纸上谈兵是一回事
when you’re talking about ideals on the blackboard
而你在这里应用是另一回事
versus when you’re actually here
你努力将两者结合起来
and you try to fit two assemblies together,
然后你发现有些不兼容之处
and you realize there’s some tolerance mismatch,
或者有些方面不匹配
or some parts that don’t fit together, and they should,
它会让你更好地意识到
and it just gives you a better sense and perspective
做项目的难处
of what the difficulties of a project
以及工程学的难点所在
and the difficulties of engineering are.
– 这种实操经历是你的最大收获
– The hands-on experience is the number one thing you get.
我们团队的使命是
Our mission statement, of NU Solar,
努力建造更好的工程设计
is that we are trying to build better engineers,
我们只是通过建造太阳能汽车来实现
we just happen to do it by building a solar car.
– 我想这个团队有点像创业公司
– I guess NU Solar is run a little bit like a startup,
我们接手了这个业务
where we have this business.
我必须想办法搞资金
I had to take care of funding for our team,
一般都是赞助费
which would be sponsorship,
我们也有商业联系
we also have company relations,
我们跟波音等公司对话
we talk to, say Boeing and stuff,
请求任何形式的捐助
and then ask for any kind of donations,
并且跟他们保持良好关系
and make sure we good company relations with them.
– 太阳能汽车通常有制造周期
– So, the build cycle for the car usually is around,
大多数高校能每两年产出一辆新车
most universities come out with a new car every two years,
每次都努力达到
and they’re always trying to approach
空气动力学效率的峰值
the peaks of aerodynamic efficiency,
所选电池的电效率
electrical efficiency in terms of the battery choice,
同时也要格外注意
battery selection, and also pay special attention
太阳能电池
to your solar cells, as well.
– 这是SC6 是我们的第六代汽车
– This is SC6, this is our 6th Solar Car.
是单体横造汽车
It’s what’s called a monocoque car,
就是说 它没有内部框架
which means it doesn’t have an internal frame.
汽车的整体都是由
All the main loads of the car are supported
这两根碳纤维排管支撑
by these two carbon-fiber ribs, and then this shell,
车壳也是碳纤维所制
which is also made of carbon fiber,
如此支撑车体 防止弯曲
supports the car this way, and keeps it from bending.
在这里面大约有400个锂电池单元
Inside here, about 400 individual lithium-ion battery cells.
每个在3.9伏左右 我们将它们
Each one’s at about 3.9 volts, and we package them
每13个组成一个组块
into modules of 13 cells each,
这样能得到适量的电流
to get the appropriate amount of current.
你刚看到的是下面一半
What you just saw was the bottom half,
这是上面那一半 简言之 顶壳
and this is the top half, or the top shell, for short.
这所有的太阳能电池能
These are all of our solar cells which allow us
利用太阳的能量
to recharge the batteries while we’re driving,
在驾驶过程中给电池充电
using the power from the sun.
它们都是单晶硅 也就是说
They are monocrystalline silicon, which means that
每个小蓝方块都是一个
each one of these blue squares is a single crystal,
完美无瑕的单晶
with no imperfections.
所以制造起来相当困难
So, they’re incredibly difficult to make.
我们不制造 直接买
We don’t make them, we buy them,
但它们很容易受损
but they’re also really easily damaged,
若磕坏一个电池 也就毁了整个电池
so if you dent a cell, it basically damages the entire cell,
也就没法产生多少能量了
and so it won’t produce as much energy,
这就是为什么
which is why you have to be
对它们得格外小心
incredibly careful with some of these.
如果汽车着火了 这个把手
This knob, if the car is on fire,
按一下可以熄掉汽车
and you need to turn off the car, you hit this knob.
它不能灭火
It won’t stop the fire,
但可以切断电源
but it will disconnect the batteries,
以免火上浇油
so hopefully not exacerbating the situation.
(电子乐)
(high-energy electronic music)
这些成员很看重的是
What employers really value is the fact that you have done
自己不仅仅做了基本功
something more than the bare minimum, in a sense,
而是做了超越这个学位的更多事情
you’ve done more than achieving for your degree,
这不是件易事
which is not an easy feat,
但你已然鹤立鸡群
but, you have to stand out amongst your peers,
他们很在意的是
and then, what they really care about,
这是一项真正的工程学课外活动
is that it is a true engineering extracurricular.
你必须得优化结构
You have to optimize structures,
你得关心所有荷载工况
you have to really care about all the load cases,
汽车的使用寿命
and the lifespan of your vehicle,
及其在使用周期里的承受力
what it will endure during its service life,
这都是很现实的工程学问题
and these are all very real engineering problems
无论在哪都能遇到
that you do for anywhere.
(电子乐)
(high-energy electronic music)
– 若你喜欢这个视频
– If you enjoyed this video,
并想了解更多顶级高校学生组织
and want to learn more about student organizations at top colleges,
那就订阅吧
just subscribe.
同志们 我没法往前了 这有个摄像机
Guys, I can’t go forward, there’s a camera there.

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视频概述

西北大学本科生建立的太阳能汽车团队是工程学一项非常好的课外活动,成员们将理论知识运用于实践,掌握了多项技能;其管理类似创业团队,早早便具备了将研究产业化的能力。

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视频来源

https://www.youtube.com/watch?v=RE4I78p2E5I

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