Originally Posted by
Sunfish
But with my engineers hat on...
...The fatigue life of a chunk of Aluminium alloy is a function of its entire stress history from new. That is the integral of load applied times length of time applied.
Perhaps you should rephrase or hand your engineer's hat back in Sunfish. Fatigue strength is more about stress cycles and less about static load.
If the Shrike really was designed to run at the ragged edge of fatigue strength design factors such that a 10% MTOW increase would push it over the edge, then surely it would have been fitted with some kind of fatigue index device, a la Bulldogs etc?
A