Method and system for alerting aircrew to unsafe vibration...

Communications: electrical – Aircraft alarm or indicating systems – Flight alarm

Reexamination Certificate

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C340S971000, C340S946000, C073S066000, C244S208000, C244S204000, C244S207000

Reexamination Certificate

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07839304

ABSTRACT:
An onboard system for a rotary wing aircraft detects a limit cycle oscillation in the tail mast and provides a timely indication of the limit cycle oscillation to an aircrew before serious damage to the airframe is likely to occur.

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patent: 2007/0001052 (2007-01-01), Strehlow et al.

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