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Bruel and Kjaer EMS Inc.
Aircraft Engine Maintenance - Type 3641
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To ensure the maintenance of helicopter engines and to optimise the up-time of the aircraft, Brüel & Kjær has developed a system for the field verification on the ground of specific engines based on PULSE Type 3560-B hardware and dedicated software. Vibration measurements are made according to the procedures specified by the engine manufacturer, Turbomeca, in their Maintenance Manual.
Uses
Vibration checks can be performed on specific aircraft engines according to Turbomeca’s specifications
Features
• Verifies the vibration levels with reference to two tachometer signals, one from the gas generator and one from the power turbine of the engine
• Alarm if level limitations are exceeded
• Alarm if low level occurs
• Automatic storage of results in database
• Contour plot (frequency, speed, level) to aid fault diagnosis
• System can be extended to allow advanced analysis of vibration signals and measure Governor Static Droop
• Recorded data can be sent to Turbomeca for further analysis
• Mains, aircraft and battery operation
• Automatic recognition of accelerometer and sensitivity by means of TEDS
Aircraft Engine Maintenance
To ensure the maintenance of helicopter engines and to optimise the uptime of the aircraft, Brüel & Kjær has developed a system for field verification on the ground of specific engines based on PULSE Type 3560 B hardware and dedicated software.
Vibration measurements are made according to the procedures specified by TURBOMECA, the engine manufacturer, in their Maintenance Manual. Measurements are made on the first order of the vibration signal with reference to two tacho signals – one from the generator and one from the free turbine of the helicopter engine.
The simple user interface leads the technician from identification of the engine to monitoring of the signals and comparison with threshold levels (for confirmation measurement). The user interface also helps the technician to store the signal in a database and to produce a service report where the results are clearly indicated as “Passed” or “Limit Exceeded”. The report can be sent directly to the engine manufacturer along with the results for further analysis.
Benefits
• Immediate report produced according to Turbomeca template
• Only one run-up for all measurements to be measured
Use requires the basic system plus an engine specific setup. At present setups for a wide range of engines are available, including the widely used Makila and Arriel engines. The system can be extended to cover other engines on request.
