Morgans wrote:
"Lamellae" wrote in message
link.net...
Dick wrote:

SECOND: What setup could be used to do such a load test??
Is it mandatory to actual freefall drop or somehow just apply the load??

I vote for a drop, so it rings like a bell. A steady load won't be the same.

Untrue. Force is force.

Force is force but impact loading and repeated loading cause
failures that are not observed under static loading condiitons.

It takes a finite amount of time for force to distribute itself
through the material. An impact can apply the force faster
than it is distributed, thus concentrating it, especially at
stress risers (e.g. notches). There may also be rebound
effects that will impart a load onto parts that would see none
at all in a static test.

As far as impacts go, dropping a landing gear is not terribly
extreme. But its not the same as a static load.

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FF