Re: Airliner Windows

Date:         11 Sep 97 03:35:32 
From:         Mary Shafer <shafer@rigel.dfrc.nasa.gov>
Organization: NASA Dryden
References:   1 2 3 4 5
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Syiad.Al-Duri@t-online.de (Syiad T. Al-Duri) writes:

y "[non-spam]jfmezei"@videotron.ca (jf mezei) wrote in sci.aeronautics.airliners
> > One of the comments made was that the structure was weaker due to the
> > large picture windows of the COMET. Not sure how true this is, but it is
> > a beleivable argument.
>
> AFAIK, the main problem with the COMET where the high engine vibrations. It
> was the first passenger aircraft with jet engines and they were pretty rough
> at those times. The engines were mounted in the root of the wing, where the
> bending torque has the highest value.

No, it was the Electra that had the whirl mode problem.  Comets had
fuselage fatigue problems caused by the corners of the square windows,
with failure and explosive decompressions ensuing.  Electras had the
wings come off, for the reason you describe.

--
Mary Shafer    http://www.dfrc.nasa.gov/People/Shafer/mary.html
shafer@rigel.dfrc.nasa.gov     Of course I don't speak for NASA
Lead Handing Qualities Engineer, SR-71/LASRE and ACTIVE
NASA Dryden Flight Research Center, Edwards, CA
For non-aerospace mail, use shafer@ursa-major.spdcc.com please