Vibration monitoring system for an aircraft engine

Details Vibration monitoring system for an aircraft engine Vibration monitoring system for an aircraft engine

1979-03-07

1980-07-15

Waring, Alvin H.

Communications: electrical

Selective

Having indication or alarm

340683, 340508, 73DIG1, G08B 2100

Patent

active

042131146

ABSTRACT:
A monitoring system for detecting and indicating typical operating conditions, particularly vibration of an aircraft engine, wherein at least two measuring feelers such as accelerometers are exposed to the same conditions, the output signals from said feeler are compared with each other and logical means detect normal conditions when the output signals are equal, system defect conditions when the output signals differ from each other and alarm conditions when the output signals both exceed a safety limit. Such a system greatly increases the reliability and at the same time avoids false alarms.

REFERENCES:
patent: 3758758 (1973-09-01), Games et al.
patent: 3783680 (1974-01-01), Mason
patent: 3979739 (1976-09-01), Birchall
B. Hegglin, "History and Experience of the Vibro-Meter Airborne Vibration Monitoring System Installed in the Swissair Coronado Fleet", 13 pages of report.

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