PH.V.C.S4

From the FAA library

• Helicopter Flying Handbookp. 5-3
  Chapter 5: Rotorcraft Flight Manual › Operating Limitations (Section 2) › Powerplant Limitations

  Powerplant Limitations The powerplant limitations area describes operating limitations on the helicopter’s engine including such items as rpm range, power limitations, operating temperatures, and fuel and oil requirements. Most turbine engines and some reciprocating engines have a maximum power ... maximum continuous power rating. The “maximum power” rating is the maximum power the engine can generate and is usually limited by time. The maximum power range is depicted by a yellow arc on the engine power instruments, with…

• Helicopter Flying Handbookp. 11-2
  Chapter 11: Helicopter Emergencies and Hazards › Autorotation

  Following this general procedure of fitting airspeed and rotor rpm to existing conditions, a pilot can achieve approximately the same glide angle in any set of circumstances, and thereby estimate the touchdown point accurately. Figure 11-1. During an autorotation ... upward flow of relative wind permits the main rotor blades to rotate at their normal speed. In effect, the blades are “gliding” in their rotational plane. It is important that pilots experience autorotations from various airspeeds. This provides better understanding…

• Helicopter Flying Handbookp. 11-16
  Chapter 11: Helicopter Emergencies and Hazards › Low Rotor RPM and Rotor Stall

  Other causes of a power-on low rotor rpm condition include the pilot rolling the throttle the wrong way in helicopters not equipped with a governor or a governor failure in helicopters so equipped. As the rpm decreases, the amount ... horsepower the engine can produce also decreases. Engine horsepower is directly proportional to its rpm, so a 10 percent loss in rpm due to overpitching, or one of the other scenarios above, will result in a 10 percent loss…

• Helicopter Flying Handbookp. 9-12
  Chapter 9: Basic Flight Maneuvers › Normal Takeoff from the Surface › Technique

  Failing to adjust the throttle to maintain proper rpm. 7. Failing to transition to a level crab to maintain ground track. Figure 9-12. The helicopter takes several positions during a normal takeoff from hover. Normal Takeoff from the Surface ... Normal takeoff from the surface is used to move the helicopter from a position on the surface into effective translational lift and a normal climb using a minimum amount of power. If the surface is dusty or covered with loose…

• Helicopter Flying Handbookp. 9-12
  Chapter 9: Basic Flight Maneuvers › Normal Takeoff from a Hover › Technique

  Normal Takeoff from a Hover A normal takeoff from a hover is an orderly transition to forward flight and is executed to increase altitude safely and expeditiously. Before initiating a takeoff, the pilot should ensure that the proper checklist ... been completed and the helicopter systems are within normal limits. During the takeoff, fly a profile that avoids the cross-hatched or shaded areas of the height/velocity diagram. Technique Refer to Figure 9-12 (position 1). Bring the helicopter…