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Old 19th July 2019
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Re: “I‘m a lucky Barsteward”

Originally Posted by Naughty Nigel View Post
How interesting that there was so much resistance to Black Boxes back in the day. They are now fitted in many cars although I suspect few drivers know this.

There was no further mention of the De Havilland Comet, which I seem to remember suffered fuselage failure owing to overly-large windows with square corners, and the fact that the aircraft flew at much higher altitudes than previous turbo-prop aircraft.
If I have understood it correctly the higher altitude and possibly higher speed created greater pressure and temperature differentials between in flight and on ground than previously experience with a civil aircraft, and the square windows set up a weak point at their corner which developed stress fractures in the surrounding fuselage and ultimate failure of the surrounding structure. Changing to oval windows did away with the weak point for the stress fractures to start from. No idea whether the size of the windows was contributory as well.

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