SH.VIII.H.K1

From the FAA library

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

  Dynamic Rollover A helicopter is susceptible to a lateral rolling tendency, called dynamic rollover, when it is in contact with the surface during takeoffs or landings. For dynamic rollover to occur, some factor must first cause the helicopter to roll ... pivot around a skid or landing gear wheel, until its critical rollover angle is reached. The angle at which dynamic rollover occurs will vary based on helicopter type. Then, beyond this point, main rotor thrust continues the roll and recovery…

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

  Critical Conditions Certain conditions reduce the critical rollover angle, thus increasing the possibility for dynamic rollover and reducing the chance for recovery. The rate of rolling motion is also a consideration because, as the roll rate increases, there ... reduction of the critical rollover angle at which recovery is still possible. Other critical conditions include operating at high gross weights with thrust (lift) approximately equal to the weight. Refer to Figure 11-5. The following conditions are most critical…

• Helicopter Flying Handbookp. 13-9
  Chapter 13: Effective Aeronautical Decision-Making › Risk Management › Four Risk Elements

  identify hazards, assess the degree of risk they pose, and determine the best course of action is an important element of a safe flight. Four Risk Elements During each flight, decisions must be made regarding events that involve interactions between ... four risk elements—the PIC, the aircraft, the environment, and the operation. The decision-making process involves an evaluation of each of these risk elements to achieve an accurate perception of the flight situation. [Figure…

• Pilot's Handbook of Aeronautical Knowledgep. 11-13
  Chapter 11: Aircraft Performance › Takeoff and Landing Performance › Water on the Runway and Dynamic Hydroplaning

  Water on the Runway and Dynamic Hydroplaning Water on the runways reduces the friction between the tires and the ground and can reduce braking effectiveness. The ability to brake can be completely lost when the tires are hydroplaning because ... braking effectiveness when runways are covered in ice. When the runway is wet, the pilot may be confronted with dynamic hydroplaning. Dynamic hydroplaning is a condition in which the aircraft tires ride on a thin sheet of water rather than…

• Helicopter Flying Handbookp. 11-13
  Chapter 11: Helicopter Emergencies and Hazards › Dynamic Rollover › Precautions

  When the upslope skid or wheel hits the ground, the dynamics of the motion can cause the helicopter to bounce off the upslope skid or wheel, and the inertia can cause the helicopter to roll about the downslope ground contact ... skid or wheel on the ground, the helicopter can roll over on its side. Precautions To help avoid dynamic rollover: 1. Always practice hovering autorotations into the wind, and be wary when the wind is gusty or greater than…

• Aviation Maintenance Technician Handbook - Generalp. 5-40
  Chapter 5: Physics for Aviation › Dynamic Stability

  Dynamic Stability The dynamic stability of an airplane involves the amount of time it takes for it to react to its static stability after it has been displaced from a condition of equilibrium. Dynamic stability involves the oscillations that typically ... return to its original position or attitude. Even though an airplane may have positive static stability, it may have dynamic stability which is positive, neutral, or negative. Imagine that an airplane in straight-and-level flight is disturbed and pitches…