Shawk
Shawk : Like two champagne glasses filled the same, fingertip tone on one producing a harmonic vibration on the other? Or also, like Flutter?
Ever see the original Engine/Propellor fit on the Electra (P-3)? Add thrust on final and the propellor discs like to take the wings off. Flutter.
Identical mechanical layout and Fluid supply on ETOPS. I brought that up a long time ago. Something like needing to introduce anomalies into "duplicate systems" with ETOPS. Each system marching to a different drum.
However, the engines were on auto-throttle, a very precise system that would command exactly the same thrust from both, a precisely timed move. Neither engine would have necessarily reacted in advance of the other, hence no need for harmonics. In whatever fault mode, the Fuel could be expected to be exactly homogeneous, save for a slight difference in temp., as above. Shaken, not Stirred.
Last edited by airfoilmod; 13th May 2008 at 17:43.