流言终结者（2003）

MythBusters S13E08

Part 3 Dec. 17, 2020, 12:56 p.m.

But continuing along this theme,
不过依此类推
we figure if we make something that's a little bigger,
我们相信只要我们的装备再大一点
My little popgun.
我的玩具枪
say, 20 times as big. We might get some real results.
比方说大20倍也许能管用
So, in attempt to do some deadly damage,
为了打造致命一击
Adam and Jamie are going to extreme lengths.
亚当和杰米将装置的长度延长到极致
It's coming along nicely.
效果拔群
80 feet, to be exact.
长达24米
And exactly why?
其中的奥秘
Well, a Hyneman walks into a bar and says...
让海曼为您娓娓道来...
So, why the long barrel?
为什么要这么长的枪管
Well, as long as the pressure behind the ball
只要乒乓球后方的气压
is greater than the pressure in front of the ball,
大于前方的气压
the ball's gonna continue to accelerate.
乒乓球就会持续加速
It's perfect.
完美
And so, the longer the barrel we have,
因此枪管越长
the more time the ball will have to do that,
加速的时间越长
and the faster it'll be going when it comes out the far end.
乒乓球射出的初速度就越高
Here's the target.
这是目标
And with the popgun pressurized to the max the shop air can supply...
等气♥枪♥被压力罐完全加压之后...
Okay, that's 140 psi.
好的现在差不多一百万帕了
it's time to load...
装弹...
These are some professional-grade Ping-Pong balls.
这些都是专业级别的乒乓球
and lock...
锁定...
Close the breech!
闩上后膛
and let rip. Range is hot!
蓄力一击危险区域
Firing.
开火
Three, two, one.
三二一
I just see a hole at the other end.
我只看到那头有个洞
That is far out.
这次猛多了
That's a fast little Ping-Pong ball.
真是颗快得没影的乒乓球
Well, our 80-foot-long barrel sent this Ping-Pong ball
依靠24米的枪管这只乒乓球的速度
through an inch-thick piece of honeycomb cardboard,
足以贯穿2.5厘米厚的蜂巢紙板
which in and of itself is not that incredible a feat.
虽然本身这也没什么大不了
But it left a visible mark on 3/4-inch plywood.
但它居然能在2厘米厚的胶合板上留下印记
That is something more than I expected.
确实出乎我的意料
It certainly banged up the backboard.
秒杀纸板显然是没什么问题
But what about the crunched numbers?
不过最终的速度究竟是多少呢
453 miles per hour.
每小时730公里
That's a good place to start.
挺有希望的
Absolutely.
绝对的
So, we got this ball going 453 miles per hour.
我们将乒乓球加速到每小时730公里
That's really fast,
的确是很快
But I have to say, I don't think it's lethal.
不过我还是要说这不够致命
Based on what I'm seeing with this ball,
根据我在实验中的观察
it might break a rib,
这种速度可以击断肋骨
it might give you a really nasty bruise,
并且造成瘀伤
but it's not gonna kill you.
但仍然不够致命
So, to make a mortal mark,
因此为了那致命一击
they're going to need more speed, more momentum,
他们还需要更高的速度更大的动量
and a step into the unknown.
继续探索
This has never been done before.
这是前所未有的
It's scary.
有点怕怕
Kari, Grant, and Tory are testing the ultimate
卡莉格兰特和托里正在验证
in backs-to-the-wall ballistics ingenuity.
背水一战中的终极弹道工程奇迹
And so far...
直到现在...
don't worry, comrade.
别担心哥们
it's all go on the fro-blow.
都只是前戏阶段
Sorry, my friend.
对不住了兄弟
I guess we underestimated the ice.
我们低估了冰的威力
The team has the balls. Now to build the barrel.
炮弹已经就绪现在轮到炮筒了
Now, what I have here is a giant cardboard tube.
这是一个巨型硬卡纸筒
Everybody okay?
大伙都没事吧
Now, this is how we're gonna make our ice cannons.
我们打算这样建造冰雪大炮
This is the mold that we're gonna fill up with water
我们将在这个炮筒模具中注满水
and let it freeze so we can make our cannon.
然后冷冻结冰大功告成
So, I'm gonna build a couple of different sizes,
我要做几个尺寸不同的版本
and we're gonna see which one is the strongest
并且测试哪一种最为坚固
to withstand the exploding black powder.
能够承受黑火♥药♥爆♥炸♥的威力
Yep, when it comes to cannons,
没错谈到大炮
size really does matter.
尺寸的确很重要
The breech, that is the explosive chamber at the base of the barrel,
后膛即炮管末端黑火♥药♥爆♥炸♥的场所
has to contain and channel
必须要能承受爆♥炸♥产生的巨大压力
the energy of the black-powder blast.
并且将其能量引向炮弹
So to find the optimal dimension,
为了找到最优的形态结构
Tory is building 3 breeches
托里制♥作♥了三种规格的后膛
with 4-, 6-, and 8-inch walls
管壁分别为10 15和20厘米
and diameters of 12, 16, and 20 inches.
管外径分别为30 38 和51厘米
Too thin, and it'll explode.
管壁太薄炮身容易炸毁
Too thick, and the mass becomes structurally prohibitive to move around.
管壁太厚炮身将无法移♥动♥
All right, so now that the tubes are filled up with water.
好了纸筒中已经灌满了水
We just need to let them freeze,
只需静待筒里的水结冰
and then we'll have our breeches.
后膛就制成了
And one week later, the ice-cold cannons
一周后冰冷的大炮
are ready for a refrigerated trip to the bomb range.
被冷冻货车送至爆破实验场
This is gonna be fun.
肯定很有趣
So, we now know that half a pound of black powder is enough
我们已经知道230克黑火♥药♥
to propel our ice cannonball at 680 miles per hour,
足以将冰雪炮弹加速至时速1080公里
which should give us enough range and enough damage to be a viable weapon.
这样的射击范围和杀伤威力足以致命
Now what we need to do is work on the breech.
现在该轮到冰制后膛登场了
God, it would suck if this thing fell.
这玩意要是倒下来就惨了
We have a 4-inch wall, a 6-inch wall, and an 8-inch wall.
我们有10 15和20厘米三种规格
We'll put our half-pound of black powder in there
我们将在他们中分别置入230克黑火♥药♥
And see which one of these, if any, is able to survive
看看他们当中究竟哪个能够
the kinds of forces that are generated in a cannon.
在爆♥炸♥一瞬的巨大压力下幸存下来
First up is the 20-inch breech
首先亮相的是51厘米管外径
with 8-inch walls...
厚度20厘米的后膛...
Don't let go.
别松手
Oh, my god!
老天
where surviving the half-pound black-powder blast
也许除了测试230克黑火♥药♥的爆♥炸♥之外
may not be the only issue.
终结者手头还有别的棘手问题
I got to tell you,
我得说
I can see some problems with working with ice.
跟冰块打交道可不是件容易的活
Yeah, I don't know how these guys
没错我也搞不懂
would've been able to actually maneuver an ice cannon.
当年这些家伙是怎么驾驭这种武器的
Mass is a big concern.
冰块的质量是个大问题
The larger it is,
质量越大
the harder it'll be to build, move, and manipulate.
越难建造搬运操纵
Plus, even in the deepest mid-winter...
此外即使是在天寒地冻的三九...
Loading the charge now.
置入引线
due to the insulating properties of ice,
由于冰的隔热性
freezing large amounts of water takes a long time...
冷冻大量的水需要很长时间...
All right, we're set. Let's go to the bunker.
好了准备就绪我们去观测室吧
meaning the smallest breech
这意味着
that can contain the blast will be the best option.
能盛装炸♥药♥的最小后膛将是最佳选择
So, with the black powder loaded and no projectile,
那么在没有炮弹仅有火♥药♥的情况下
which barrel will survive?
哪个炮管能经受住呢
All right! This is 20-inch diameter breech.
好的直径51厘米后膛测试实验
In three, two, one.
倒数三二一
Well, we just figured out a way to make hail instantly.
我们刚刚想出了快速制♥造♥冰雹的方法
Giant snow cone.
巨型雪锥
Now, that did not go according to plan.
现在情况并未按预期发展
That's not gonna work.
这样就行不通了
That is the thickest wall we have.
那已经是我们做的最厚的后膛了
Right now, it is not looking good for the myth.
现在的情况对这条流言很不利
But you know what? Maybe we're using too much black powder.
但也可能是我们的火♥药♥放多了
Maybe we need to find the perfect amount of black powder
可能我们需要找到火♥药♥的最佳量
to launch the cannonball and not destroy our cannon.
才能够既发射出炮弹又不会破坏大炮
So, with a few more freshly frozen 20-inch breeches,
因此由于51厘米的后膛数量有限
the team decides a little less boom is required
所以团队决定降低爆♥炸♥强度