|Feb 13, 2013, 03:37 PM|
Let us be warned......blue foam is just not strong enough for a mast, should have been constructed from ply!
|Mar 07, 2013, 06:23 PM|
Sverige, Vδrmlands Lδn, Filipstad
Joined Jan 2009
How do the helicopters come into ground resonance, what is the most common cause for it?
Is it some (slight) imbalance in rotorhead or similar that can start such thing?
Can any helicopter (2-blade, 3-blade etc) get into this scary condition? An autogyro also?
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