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09-29-2011, 09:57 AM #66Professional Member
- Join Date
- Aug 2009
Sure, just wait for a couple of days,
Have to say thanks for your concern and the good suggestions.
09-29-2011, 11:52 PM #67
the best open rotor test using vibration equipment is by measuring the dB of the current...see attached.
the main peak in the middle is the line frequency (60 Hz) and the large peak to the left is the rotor turning speed (57.469 Hz). the difference is about 32 dB. anything less than 45 dB indicates the beginning of a problem...<30 dB means that the motor is going to try to walk out of the door!The weak aren't destroyed by the strong.
The weak are destroyed by the under-estimated.
I know a famous song that ends in 'my nose'. The artist is dead. Know who?