Flight Instructor for Rotorcraft Category Helicopter Rating › II. Technical Subject Areas › Task D. Principles of Flight

HI.II.D.K12

Knowledge

Aerodynamics of autorotative flight.

Practice questions Ask the tutor

Study note

Get a short, cited explanation of this element written from the FAA handbooks: the core idea, the numbers that matter, common test traps, and a quick self-check.

From the FAA library

Helicopter Flying Handbook p. 2-26
Chapter 2: Aerodynamics of Flight › Turning Flight › Autorotation (Forward Flight)
Autorotation (Forward Flight) Autorotative force in forward flight is produced in exactly…
Helicopter Flying Handbook p. 2-25
Chapter 2: Aerodynamics of Flight › Turning Flight › Vertical Autorotation
Vertical Autorotation Most autorotations are performed with forward speed. For simplicity, the…
Helicopter Flying Handbook p. 2-25
Chapter 2: Aerodynamics of Flight › Turning Flight
Figure 2-45. Forces acting on the helicopter during turning flight. Autorotation…
Helicopter Flying Handbook p. 2-26
Chapter 3: Helicopter Flight Controls
these effects. For additional information on aerodynamics, refer to the aerodynamics of flight portion of the Pilot’s Handbook of Aeronautical Knowledge. Figure 2-48. Force vectors in vertical autorotation descent. Figure 2-49. Blade regions in forward autorotation descent…