PH.V.E.S2

From the FAA library

• 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…

• Pilot's Handbook of Aeronautical Knowledgep. 6-2
  Chapter 6: Flight Controls › Flight Control Systems › Primary Flight Controls

  Flight Control Systems Flight Controls Aircraft flight control systems consist of primary and secondary systems. The ailerons, elevator (or stabilator), and rudder constitute the primary control system and are required to control an aircraft safely during flight. Wing flaps, leading ... edge devices, spoilers, and trim systems constitute the secondary control system and improve the performance characteristics of the airplane or relieve the pilot of excessive control forces. Primary Flight Controls Aircraft control systems are carefully designed to provide adequate responsiveness…

• 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…

• Pilot's Handbook of Aeronautical Knowledgep. 17-9
  Chapter 17: Aeromedical Factors › Health and Physiological Factors Affecting Pilot Performance › Climbing While Turning

  these maneuvers at low altitudes or in the absence of an instructor pilot or an appropriate safety pilot. Climbing While Accelerating With the pilot’s eyes closed, the instructor pilot maintains approach airspeed in a straight-and-level attitude ... several seconds, then accelerates while maintaining straight-and-level attitude. The usual illusion during this maneuver, without visual references, is that the aircraft is climbing. Climbing While Turning With the pilot’s eyes still closed and the aircraft…

• Helicopter Flying Handbookp. 3-3
  Chapter 3: Helicopter Flight Controls › Cyclic Pitch Control

  Cyclic Pitch Control The cyclic pitch control (or simply “cyclic”) is usually projected upward from the cockpit floor, between the pilot’s legs or between the two pilot seats in some models. [Figure 3-4] This primary flight control allows ... Aerodynamics of Flight, the total lift force is always perpendicular to the tip-path plane of the main rotor. The purpose of the cyclic pitch control is to tilt the tip-path plane in the direction of the desired horizontal…

• Helicopter Flying Handbookp. 8-4
  Chapter 8: Ground Procedures and Flight Preparations › Engine Start and Rotor Engagement › Aircraft Servicing

  However, this can be hazardous if not properly conducted. Pilots should remain at the flight controls; and refueling personnel should be knowledgeable about the proper refueling procedures and properly briefed for specific helicopter makes and models. The pilot may need ... train the refueling personnel on proper hot refueling procedures for that specific helicopter. The pilot should explain communication signs or calls, normal servicing procedures, and emergency procedures as a minimum. At all times during the refueling process, the pilot should…