Hi everybody and welcome to episode 61 of the now once weekly Alexi Sale podcast and hi to Al. Oh hey alexie how are you dad number two i'm fine thank you i'm

okay i'm enjoying our weekly little catch-ups it's quite nice yeah yeah i think the audience

seemed to quite like it as well so the the topics that we were, we left on last week were aircraft.

And aircraft, well, I mean, that's a widespread.

Airplane food, am I right?

Not airplane food.

Well, first of all, somebody mentioned planes that had crashed due to their window design.

What they're in the comments on YouTube.

Yeah, do you know what they're talking about?

Yes, of course I know what they're talking about.

They're talking about the first commercial jet airline in the world, which again was the De Havlin Comet, which was a British aircraft.

And, but, you know, like all these things in the way, they were talking about like the hovercraft.

You know, British inventions didn't quite make it.

The problem, one of the, well, two problems, I think, with the comet.

One was that, as the comments says, they, it had square windows rather than round windows.

And that meant, so the people knew, I mean, engineers, I think, knew very little about what we now call metal fatigue.

And so because it had, the plane had square windows,

this placed a lot more stress on the skin,

the aluminium skin of the plane

and caused tiny cracks to appear.

And these cracks widened when the plane was pressurized

and so several comets essentially broke up in flight and it didn't just happen once and then

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