Track and Balance

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Across
  1. 3. A vibration in which the movement is side-to-side
  2. 7. Absorbs centrifugal loads between the blade and the hub
  3. 8. The manufacturer of the balancing and tracking equipment
  4. 10. A vibration in which a beat may be felt
  5. 11. Pins or bolts used to hold the rotor blades to the hub
  6. 13. A weight placed in the tip of the rotor blade for spanwise balance
  7. 15. A brand name used by Chadwick-Helmuth Corporation for an electronic tracking device
  8. 17. Splines to the mast or shaft to retain the rotor and provides the flapping hinge
  9. 18. An imaginary line passing from the leading edge to the trailing edge of an airfoil
  10. 19. The balance of an object in motion
  11. 21. An old method used to check rotor track on the ground
  12. 23. A vibration dampening system used on Bell 206L to reduce main rotor vibration
  13. 25. A low frequency vibration having one beat per revolution of the rotor
  14. 27. Track of the rotor taken at speed below normal operating RPM
  15. 28. Procedure used to bring the blades of the rotor into the same plane of rotation
  16. 29. Another name for tracking reflectors
  17. 30. A vibration in which the movement is up and down, as in an out-of-track condition
  18. 31. Manufacturer of a commonly used universal balancer
  19. 32. A stick with a rubber wick on one end, using ink, grease, or lipstick
  20. 34. Fixed trim tabs on the trailing edge of a rotor blade for track adjustment
Down
  1. 1. A device installed to diminish the blade movement on the lead-lag axis
  2. 2. The track of a rotor at normal operating speed
  3. 4. The relationship of the blade tips in the plane of rotation
  4. 5. A vibration felt as a buzz
  5. 6. A vibration measurement used in electronic balancing
  6. 9. It is the blade with the double interrupter
  7. 12. The balance of an object at rest
  8. 14. Reflective targets placed on the blade tips for tracking
  9. 16. Procedure for adjusting chordwise balance by changing alignment of blades
  10. 20. When a blade climbs higher than the other in flight, and doesn't exist on ground
  11. 22. A rod with a spherical bearings to move the pitch horn of the rotor
  12. 24. The length of the blade from the root to the tip
  13. 26. Procedure to place blades in the proper relation to each other and the hub
  14. 33. A pulsed light used to make a rotating component as if it is motionless