Coaxial Rotors - Hazards of Helicopter Flight

Hazards of Helicopter Flight

The U.S. Department of Transportation has published a “Basic Helicopter Handbook”. One of the chapters in it is titled, “Some Hazards of Helicopter Flight'. Ten hazards have been listed to indicate what a typical single rotor helicopter has to deal with. The unique coaxial rotor design either reduces or completely eliminates these hazards. The following list indicates which:

  • Settling with power — Reduced
  • Retreating blade stall — Reduced
  • Medium frequency vibrations — Reduced
  • High frequency vibrations — None
  • Anti torque system failure in forward flight — Eliminated
  • Anti torque system failure while hovering — Eliminated

The reduction and elimination of these hazards are the strong points for the safety of coaxial rotor design.

Read more about this topic:  Coaxial Rotors

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