PH.VIII.H.R7

From the FAA library

• Helicopter Flying Handbookp. 11-12
  Chapter 11: Helicopter Emergencies and Hazards › Dynamic Rollover › Critical Conditions

  conditions are most critical for helicopters with counterclockwise rotor rotation: 1. Right side skid or landing wheel down, since translating tendency adds to the rollover force. 2. Right lateral center of gravity (CG). 3. Crosswinds from the left. 4. Left ... example, if a slow takeoff is attempted and the cyclic is not positioned and adjusted to account for translating tendency, the critical recovery angle may be exceeded in less than two seconds. Control can be maintained if the pilot maintains…

• Helicopter Flying Handbookp. 2-15
  Chapter 2: Aerodynamics of Flight › Hovering Flight › Translating Tendency (Drift)

  Translating Tendency (Drift) During hovering flight, a single main rotor helicopter tends to move in the direction of tail rotor thrust. This lateral (or sideward) movement is called translating tendency. [Figure 2-27] To counteract this tendency, one or more ... same plane. The helicopter tilts due to two separate forces, the main rotor disk tilt to neutralize the translating tendency and the lower tail rotor thrust below the plane of the torque action…

• Helicopter Flying Handbookp. 11-14
  Chapter 11: Helicopter Emergencies and Hazards › Dynamic Rollover › Precautions

  Avoid tailwind conditions when conducting slope operations. 7. Remember that less lateral cyclic control is available due to the translating tendency of the tail rotor when the left skid or landing wheel is upslope. (This is true for counterclockwise rotor…

• Helicopter Flying Handbookp. 10-8
  Chapter 10: Advanced Flight Maneuvers › Slope Operations › Technique

  right. When landing on slopes using left cyclic, some cyclic input must be used to overcome the translating tendency. If wind is not a factor, consider the drifting tendency when determining landing direction…

• Helicopter Flying Handbookp. 11-8
  Chapter 11: Helicopter Emergencies and Hazards › Autorotation › Technique (How to Practice)

  followed by the transition to level hovering flight. Additionally, the cyclic must be adjusted to remove the compensation for translating tendency. The tail rotor is no longer needed to produce antitorque thrust until almost maximum power is applied ... rotor must again compensate for the main rotor torque, which also demands compensation for the tail rotor thrust and translating tendency…

• Aviation Maintenance Technician Handbook - Airframep. 2-21
  Chapter 2: Aerodynamics, Aircraft Assembly, & Rigging › Hovering Flight › Translating Tendency or Drift

  Translating Tendency or Drift During hovering flight, a single main rotor helicopter tends to drift or move in the direction of tail rotor thrust. This drifting tendency is called translating tendency. [Figure 2-32] To counteract this drift…