James Russell wrote:

Wrathall Mark wrote:

 Paul, from http://www.epi-eng.com/PSRU_Tech.htm...

 Whirl mode is a divergent oscillation of the engine and mount about an axis

 > parallel with the static thrustline.

This was the Lockheed Electra - one went in at Tell City but I forget
where the other crashed. These failures ( and pure jet marketing )
really killed turbine-prop passenger planes, I think.

Regards,
James

 
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