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There was some comment recently on the "rough air"
thread where the comparison of the flight load spectrum from German research was
made to the results of Australian measurements used in the Janus fatigue test
program. One comment was Australian gusts were recorded as twice as severe
as in Germany and another comment (from memory) suggested, no, it was
half.
I was looking at the Janus fatigue test reports
today for another reason. However I noted that the German loads spectrum
was more severe than the results of Australian flight load
measurements.
This is explained in the report as being due to
the inclusion of aerobatics in the German Janus flying leading to high +
and - g loads. Also the German spctrum included lee wave and mountain
flying, again leading to higher loads.
As always the results vary according to what you
measure.
Roger Druce
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