FH.XI.G.R1

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…

• Pilot's Handbook of Aeronautical Knowledgep. 6-8
  Chapter 6: Flight Controls › Flight Control Systems › V-Tail

  This motion is called yaw. Like the other primary control surfaces, the rudder is a movable surface hinged to a fixed surface in this case, to the vertical stabilizer or fin. The rudder is controlled by the left and right ... slipstream flowing over the rudder increases its effectiveness. V-Tail The V-tail design utilizes two slanted tail surfaces to perform the same functions as the surfaces of a conventional elevator and rudder configuration. The fixed surfaces act as both…

• 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 ... point and over on its side. [Figure 11-7] Figure 11-6. Upslope rolling motion. Under normal conditions on a slope, the collective should not be pulled suddenly to get airborne because a large and abrupt rolling moment…

• Pilot's Handbook of Aeronautical Knowledgep. 6-11
  Chapter 6: Flight Controls › Flight Control Systems › Servo Tabs

  airflow striking the tab counterbalances some of the air pressure against the primary control surface and enables the pilot to move the control more easily and hold the control surface in position. If the linkage between the balance ... fixed surface is adjustable from the flight deck, the tab acts as a combination trim and balance tab that can be adjusted to a desired deflection. Servo Tabs Servo tabs are very similar in operation and appearance to the trim…

• Aviation Maintenance Technician Handbook - Airframep. 1-23
  Chapter 1: Aircraft Structures › Flight Control Surfaces › Primary Flight Control Surfaces

  attached with rivets. Figure 1-50 illustrates this type of structure, which can be found on the primary control surfaces of light aircraft as well as on medium and heavy aircraft. Figure 1-46. The fuselage terminates at the tail ... with similar but more lightweight construction. Figure 1-47. Components of a typical empennage. Figure 1-49. Flight control surfaces move the aircraft around the three axes of flight. Figure 1-48. Vertical stabilizer. Primary control surfaces constructed from composite…