Vibration Testing: Motion Based Flight Simulator


Project:

Motion Based Flight Simulator Vibration Testing

Customer:

FlightSafety Visual Systems

Services Performed:

PEI developed a test plan, mounted instrumentation, ran tests and recorded data, processed the data, and provided conclusions and recommendations.

Test Plan Development:

  • Define test objective  
  • Provide description of flight simulator and the areas of interest
  • Describe the test setup and hardware
    • For vibration testing 14 triaxial accelerometers utilized
    • National Instruments (NI) data acquisition system with chassis, input modules, and synchronization modules
    • Dell M6700 laptop running NI Signal Express 2015 for data acquisition and processing 
  • Develop accelerometer/signal map and test configurations
  • Develop accelerometer location map based on peak deflections from system finite element model
  • Summarize tests performed 
  • Composite Structure analysis

Instrumentation Mounting and Testing:

  • Set up data acquisition system at customer site
  • Document accelerometer signal map and mounting locations on flight simulator 
  • Perform vibration tests and monitor data during acquisition
  • Post process a limited portion of data immediately following test to ensure quality

Vibration Data Processing:

  • Plot all data using NI Signal Express software with accelerations, approximately 200 plots 
  • Process the reference response at the motion system knuckles to characterize the drive signal
  • Develop calculation for relative deflection between display mirror and the inner support frames 

Conclusions and Recommendations:

  • After processing and reviewing the data, PEI developed a series of observations
  • Recommendations were provided to the customer for design modifications 
  • Generated test report

 

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