HI.II.D.K4

From the FAA library

• Helicopter Flying Handbookp. 2-17
  Chapter 2: Aerodynamics of Flight › Hovering Flight › Gyroscopic Precession

  later in the rotation cycle). [Figure 2-30] Examine a two-bladed rotor disk to see how gyroscopic precession affects the movement of the tip-path plane. Moving the cyclic pitch control increases the angle of incidence of one rotor ... incidence of each blade an appropriate amount so that the end result is the same. Figure 2-30. Gyroscopic precession…

• Helicopter Flying Handbookp. 2-17
  Chapter 2: Aerodynamics of Flight › Hovering Flight › Coriolis Effect (Law of Conservation of Angular Momentum)

  increase in blade rpm lift is somewhat negated by the slightly smaller disk area as the blades cone upward. Gyroscopic Precession The spinning main rotor of a helicopter acts like a gyroscope. As such, it has the properties of gyroscopic ... action, one of which is precession. Gyroscopic precession is the resultant action or deflection of a spinning object when a force is applied to this object. This action occurs approximately 90° in the direction of rotation from the point where…

• Pilot's Handbook of Aeronautical Knowledgep. 5-32
  Chapter 5: Aerodynamics of Flight › Basic Propeller Principles › Gyroscopic Action

  Figure 5-49. Gyroscopic precession. This element of torque effect has always been associated with and considered more prominent in tailwheel-type aircraft and most often occurs when the tail is being raised during the takeoff roll. [Figure ... pilot to properly use elevator and rudder to prevent undesired pitching and yawing. Figure 5-50. Raising tail produces gyroscopic precession…

• Helicopter Flying Handbookp. 2-22
  Chapter 2: Aerodynamics of Flight › Forward Flight › Translational Thrust

  effective, nose rises or pitches up, and aircraft rolls to the right. The combined effects of dissymmetry of lift, gyroscopic precession, and transverse flow effect cause this tendency. It is important to understand these effects and anticipate correcting for them…

• Pilot's Handbook of Aeronautical Knowledgep. 8-15
  Chapter 8: Flight Instruments › Gyroscopic Flight Instruments › Precession

  This principle allows the gyro to determine a rate of turn by…