RAF crossword

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Across
  1. 2. The name of the helicopter in the RAF with five rotor blades
  2. 3. Increasing this feature of the wing will increase lift
  3. 6. Meteorological term for the meeting of a cold and warm front
  4. 8. The name given to the rotation on the longitudinal axis
  5. 11. Adrian's rank in the RAF
  6. 12. The name of the founder of the RAF
  7. 14. The helicopter prince William flew
  8. 15. The name of the aircraft positioned outside RAF wittering
Down
  1. 1. The name given to the wing profile used to make aircraft more nibmle
  2. 4. The age of the RAF
  3. 5. The name of the RAF base near Peterborough
  4. 7. Imaginary lines drawn on the surface of the earth
  5. 9. The letter in ABC in first aid stands for
  6. 10. Low-level cloud characterized by horizontal layering with a uniform base
  7. 13. The name of the wing profile used on the Alpha jet