SCIENCE|natural and applied sciences|earth sciences · TRANSPORT|air and space transport
- athshondas aeir Reference Faomhadh an téarma seo mar chuid de Thionscadal Lex
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- air resonance
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- Definition a self-excited oscillation of a helicopter involving coupling between airframe rolling motion and blade lag and flapping motion,which can occur in the airborne condition Reference Multilingual Aeronautical Dictionary(AGARD,1980)