Interesting post. I've just finished reading the first part of a series of articles published about the Handley Page Victor[1], one of the British V bombers (the others being the Vulcan and the Valiant) in Le Fana de L'Aviation[2]. Amazing aircraft, never thought its first flight was in 1952.
Now, in the text is stated (loose translation):
"Because the aircraft should operate mostly at high altitude, the thickness of most of exterior covering panels of the wing was determined by the interior pressure of the fuel. Because this last [the fuel] was distributed, these panels were build using a sandwich technique: corrugated skin between sheets of plane metal skins, riveted to the interior of the wing and point welded to the exterior. This process produced a remarkable smooth covering, but originated a few problems because all the weld points needed to be inspected for quality purposes. A program was developed, using an automatic, remotely controlled X-Ray machine. This was the first time that the working skin of an aeroplane was point welded"
I'm still amazed, 1952 and it still looks sci-fi.
[1] For the Victor:
http://en.wikipedia.org/wiki/Handley_Page_Victor [2] n 481, December 2009. This mag just made 40 years, let's hope it keeps going strong
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