On 03/02/2013 03:05, Spehro Pefhany wrote:
On Sat, 02 Feb 2013 16:48:44 -0800, the renowned Gunner
wrote:


Im trying to remember which prop job in the 1950s kept going
down...British aircraft IRRC....which had the tails snapping
off...some sort of metal fatigue/harmonics issue which took them
awhile to find and correct. They did a movie about it in the 1960s
IRRC

Turbojet, but maybe this one?

http://en.wikipedia.org/wiki/De_Havilland_Comet

They didn't understand metal fatigue very well in those days- nice big
square windows in the early models.


Best regards,
Spehro Pefhany


It wasn't the fuselage windows for the passengers that caused the
problem (at least for G-ALYP), it was the ADF window in the roof. The
passenger windows did fail in the tank test though. The stresses at the
corners turned out to be higher then de Havilland's engineers had suspected.
http://www.oocities.org/capecanavera...cogalyp.htm#yy
--
Peter