Quote:
Originally Posted by gordner
There is room for innovation and improvement in almost any design...
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Agree. That is not my issue here at all.
Helicopters are vibration nightmares and many design compromises are made to dampen vibs, which substantially impact the airframe structure in terms of fatigue and stress cracks.
The drive train in a helo must be in harmony with respect to vibration...there are instances where low frequencies harmonics in different flight regimes (harmonics in helicopter change depending of hover, forward flight, etc.) can quickly damage the airframe and drive components.
I can refer to any number of airframe and drive component "improvements" to the H-60 that ended up causing unintended stress on the airframe.
You can also cause what is referred to as "ground resonance" by changing drive components:
The OP can do whatever he wants, not my issues, just don't fly over my house