From: email@example.com (TriStar500) Organization: America Online, Inc. (1-800-827-6364) Date: 02 Jun 94 00:36:16 References: 1 Followups: 1
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In article <airliners.1994.1269@ohare.Chicago.COM>, firstname.lastname@example.org (i am me) writes: >what is the difference that causes the 2 powerplants on the md 80 to > > >seem to be noiser than the 3 powerplants on the boeing 727??? That would be our old friend resonance. There's something about the way MD hangs the engines on this airplane that does it. The DC-9 is no better, by the way. The MD-80 has an engine sync system that is supposed to calm this down by synching N1 or N2 of both engines. I understand it's not used much because it actually makes things worse!