[dTal]

The placement of the engines has nothing to do with metal fatigue from thousands of repeated 40,000 feet cruises with a pressurized cabin anyway; no German jet fighter was pressurized, so it's doubtful that they understood the technology either.

Also, the only Nazi aircraft of any type with root-integrated jet engines is the obscure Horton 229 prototype - and apart from that single cosmetic similarity, it has absolutely nothing in common with the de Havilland Comet.

[ganesh7]

Uhuh:

"The Junkers Ju 49 was a German aircraft designed to investigate high-altitude flight and the techniques of cabin pressurization. It was the world's second working pressurized aircraft, following the Engineering Division USD-9A which first flew in the United States in 1921.[1] By 1935, it was flying regularly to around 12,500 m (41,000 ft)."

[dTal]

What on Earth is your argument? Everyone was experimenting with cabin pressurization - that wasn't even the first one. Are you seriously suggesting that that specific aircraft - a pre-war, single-engine piston craft - in any way influenced the design of the Comet?

https://en.wikipedia.org/wiki/Cabin_pressurization#History