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Course 011
| An introduction to Rotor Track Balance and Practical Vibration Analysis
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You will learn about
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Vibration General Review – A brief review of the fundamentals of Vibration.
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Theory of Balance – Amplitude and Phase relationships – Polar charts – Balance axis. Practical exercises in balancing.
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Rotor Track and Balance (RTB) Dynamics – Understanding the complex relationships and interactions of rotor adjustments.
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Scenarios in RTB Problem Solving – Practical examples of problems and solutions.
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Airframe, Engine and Transmission Vibration – Fault finding techniques. Shaft balancing, bearing monitoring.
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Structured Approach to Vibration Control – Designing techniques, storing data. Creating a knowledge base.
Who should attend
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Supervisors, Managers, Pilots and Flight Crew
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Rotor and Propeller Blade overhaul shop engineers.
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Engine repair shop engineers.
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Line maintenance engineers.
Assessments
Course Material to take away
Rotor Track, Balance and Vibration Analysis Course Programme
Day 1
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Period
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Topic
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Period 1
0900–1030
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Introduction.
Review of vibration fundamentals and terms.
Introducing the concepts and importance of phase and amplitude
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1030–1045
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Break
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Period 2
1045–1230
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Theory of balance, Polar Charts. Constructing a paper based balance chart and using it to balance a model.
Tuning – Initial ground checks and in-flight fine tuning.
Balance and Track solutions – which to adopt under differing circumstances.
Confirming blade and balance identities before making adjustments
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1230–1330
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Lunch
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Period 3
1330–1500
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Integrating Track with Balance axis and freedom of movement in the helicopter.
Methods of changing lift characteristics, differences between pitch and tab adjustments.
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1500–1515
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Break
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Period 4
1515–1700
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Effects of span and chordwise mass balance changes on track and balance.
Effects of flight condition on Track and Balance
Effect of lift changes on track and balance. Multiple tabs and their effect.
Multi-choice Test.
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Day 2
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Period
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Topic
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Period 5
0900–1030
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Interactions between adjustment types as detected by the accelerometers.
Examples of dual axis solutions.
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1030–1045
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Break
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Period 6
1045–1230
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General aircraft vibration trouble shooting.
Selection of blades and other component matching issues.
Airframe vibration and effects of modifications and equipment fits.
Engine and Gearbox monitoring
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1230–1330
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Lunch
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Period 7
1330–1500
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Establishing local standards and vibration level goals.
Maintaining records and archiving data.
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1500–1515
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Break
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Period 8
1515–1700
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Equipment care, maintenance and calibration.
Questions and Answer session.
Multi-choice Test. Test marking.
Presentation of Course Certificates.
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