Propeller Blade Theory

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Across
  1. 3. the actual distance a propeller moves forward in one revolution without slip
  2. 5. Usually found about 70% along the blade length from hub
  3. 6. Used to measure blade angle
  4. 7. Turning moment that tries to turn the blade to fine pitch
  5. 10. the angle formed between the chord line and relative airflow
  6. 12. As propeller speed doubles centrifugal force increases this amount
  7. 13. Blade angle red in flight to reduce drag
  8. 16. Hazardous and undesirable condition after engine failure
  9. 17. generator Synchrophasing is carried out by each propeller driving one of these
Down
  1. 1. The blade is notionally divided up into these
  2. 2. The force that resists the rotation of the propeller
  3. 4. The point of an aerofoil where all forces act
  4. 8. The force that acts at 90 degrees to th relative airflow
  5. 9. Angle formed between plane of rotation and chord line
  6. 11. Turning force that tries to turn the blade to coarse pitch
  7. 14. Blade angle when negative angle of attack is present
  8. 15. Angle at which a blade will stall in degrees