Pike Bishop wrote:
>
> In combat during the war as I recall, standard TBO on your standard dash 7 or
> dash 9 Merlin was about 200 hours. Today I think it's about double that.
> Great power plant! Anyone need one?
> I believe towards the end of the war, with Germany being bombed relentlessly,
> they were forced to use common everyday metals as opposed to the high-tech
> stuff in their jet engines giving them a low engine life.
The problem was the turbine blades. The Germans cast them out of alloy rather
than machining each one out of solid metal as the Allies did. The trade-off
was a much faster rate of production at the expense of engine life.
Larry
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