FH.XI.E.K7

From the FAA library

• Helicopter Flying Handbookp. 2-9
  Chapter 2: Aerodynamics of Flight › Airflow and Reactions in the Rotor Disk › Rotational Relative Wind (Tip-Path Plane)

  Airflow and Reactions in the Rotor Disk Relative Wind Knowledge of relative wind is essential for an understanding of aerodynamics and its practical flight application for the pilot. Relative wind is airflow relative to an airfoil. Movement of an airfoil ... through the air creates relative wind. Relative wind moves in a direction parallel to but opposite of the movement of the airfoil. [Figure 2-15] There are two parts to wind passing a rotor blade: • Horizontal part—caused…

• Helicopter Flying Handbookp. 2-10
  Chapter 2: Aerodynamics of Flight › Airflow and Reactions in the Rotor Disk › Resultant Relative Wind

  highest. As blade speed decreases nearer the center of the disk, downward velocity is less. Figure 2-19. Rotational relative wind. Resultant Relative Wind The resultant relative wind at a hover is rotational relative wind modified by induced flow. This ... inclined downward at some angle and opposite the effective flightpath of the airfoil, rather than the physical flightpath (rotational relative wind). The resultant relative wind also serves as the reference plane for development of lift, drag, and total aerodynamic force…

• Helicopter Flying Handbookp. 11-5
  Chapter 11: Helicopter Emergencies and Hazards › Autorotation › Common Errors

  landing carriage, slowing the helicopter; however, this is dependent on the condition of the landing surface. One common error is the holding of the helicopter off the surface, versus cushioning it onto the surface during an autorotation. Holding the helicopter ... surface for a controlled, smooth landing instead of allowing the helicopter to drop the last few inches. Common Errors 1. Not understanding the importance of an immediate entry into autorotation upon powerplant or driveline failure. 2. Failing to use sufficient…

• Aviation Instructor's Handbookp. 3-34
  Chapter 3: The Learning Process › Errors › Learning from Error

  Error Recovery Given that the occasional error is inevitable, it is a worthwhile exercise to practice recovering from commonly made errors, or those that pose serious consequences. All flight learners need to learn and practice a lost procedure to ensure ... which they have lost their way. It is useful to devote the same sort of preparation to other common learner errors. Learning from Error Error can be a valuable learning resource. Learners naturally make errors, which instructors can utilize…

• Helicopter Flying Handbookp. 9-7
  Chapter 9: Basic Flight Maneuvers › Hovering › Common Errors

  Common Errors 1. Tenseness and slow reactions to movements of the helicopter. 2. Failure to allow for lag in cyclic and collective pitch, which leads to overcontrolling. It is very common for a student to get ahead of the helicopter…

• Certification: Pilots and Flight and Ground Instructorsp. 18
  26 FLIGHT INSTRUCTORS OTHER THAN FLIGHT INSTRUCTORS WITH A SPORT PILOT RATING › 26.2 Flight Instructor Certificate With Rotorcraft Category and Helicopter Class Rating

  attest to the applicant’s competence in these tasks. The following areas must be trained and documented in the endorsement, as evidence of instructional knowledge relating to the elements, common errors, performance, and correction of common errors related to straight ... previous practical test for deficiencies in instructional knowledge pertaining to the elements, common errors, performance, or correction of common errors related to straight-in autorotation in a single-engine helicopter or autorotation with turns in a single-engine helicopter…