Name: 7 HOLES in the Space Station - Smarter Every Day 135
Uploaded: 2020-03-26T04:27:06.000Z
Duration: 8 min 11 s
Description: Thousands of YouTube videos with English-Chinese subtitles! Now you can learn to understand native speakers, expand your vocabulary, and improve your pronunciation...

- Have you thought of changing your name to something that's easier to pronounce?

- Just think of the module, there's a Destiny module right over there.

- OK, hey it's me Destin, welcome back to Smarter Every Day.

Now a lot of the pictures you see from the International Space Station

So the the cupola's on node 3? Is that correct?

- Node 3. Alright, so this is astronaut Don Pettit.

You've done all the, like, city tracking, and things like..

and then the night time aurora and time lapse sequences of earth,

many of those you see have been done in this module

- He's the junk, let me just say it that way.

You're the junk when it comes to space photography, right?

- No I can't say that cause I just.. I get too embarrassed.

- I'm gonna meet you on the other side, Ok? So, seriously he's the junk.

Like all the really cool aurora stuff, Don's the guy that took it.

- So we call it a shutter and it protects the windows from micro meteorites when the shutters are closed,

And also thermally insulates the windows from the radiation environment of space.

- So can you shut these things from the outside?

- No, you can open and close it from the inside.

- OK wait. On the inside you're throwing a lever or something, and it..

- How do you do that and maintain a pressure seal between them?

All our hatch seals are O-ring type seals.

- So you have a whole series of O-rings in here

- So, I mean on the space station how many of these would you have?

- What happens if you get a leak on that?

- You just have a leak. and you lose air.

- And what you would do is you would probably seal the whole cupola off

and then there's probably a plan I don't know off the top of my head

but there's probably a plan for replacing the mechanism,

- So my question is how can you operate a lid on the outside of the space station by manipulating something mechanical

on the inside of the space station, without losing air pressure.

He said that it takes a really good engineer to design this sort of thing.

I'm told the guy quit working on the space program

and now owns his own motorcycle parts business.

He went to Auburn University as an industrial engineer

and he's got like well over a dozen patents.

20 years ago he was the lead engineer over the cupola shutter design

but after the project finished he stopped and went and built his own business.

It's a special stand that uses leverage to pick up a motorcycle so people can work on it.

He's so humble about his skills though that even the people that work with him had no idea what he did for the space station.

When Charlie's team was working on this they called it Space Station Freedom.

This program morphed into the International Space Station program and Charlie's drawing package was handed over to the Italian space agency

Charlie however kept an entire drawing package,

cause every good engineer knows you might have to go back and look at what you did.

We talked about the handles, we looked at the bevel gears,

OK we found what might be the most critical part of the entire drawing package.

and you can see right here there are two grooves,

and those grooves are held to within 2000ths of an inch.

The reason that's important is because the interface between the inside of that groove

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7 HOLES in the Space Station - Smarter Every Day 135

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