Sport Flight Instructor Helicopter - Simplified Flight Controls › II. Technical Subject Areas › Task F. Operation of Systems

FH.II.F.K1c

Knowledge

Helicopter-simplified flight controls systems, including:

Main rotor(s) and antitorque systems, as applicable

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Get a short, cited explanation of this element written from the FAA handbooks: the core idea, the numbers that matter, common test traps, and a quick self-check.

From the FAA library

Helicopter Flying Handbook p. 11-18
Chapter 11: Helicopter Emergencies and Hazards › System Malfunctions › Loss of Tail Rotor Effectiveness (LTE)
There are no extra parts in helicopters. The respect and discipline pilots…
Helicopter Flying Handbook p. 4-4
Chapter 4: Helicopter Components, Sections, and Systems › Main Rotor System › Rigid Rotor System
Figure 4-4. Four-blade hingeless (rigid) main rotor. Rotor blades are comprised of glass fiber reinforced material. The hub is a single piece of forged rigid titanium. The rigid rotor system is very responsive and is usually not susceptible ... mast bumping like the semirigid systems because the rotor hubs are mounted solid to the main rotor mast. This allows the rotor and fuselage to move together as one entity and eliminates much of the oscillation usually present…
Helicopter Flying Handbook p. 4-2
Chapter 4: Helicopter Components, Sections, and Systems › Main Rotor System
Main Rotor System The rotor system is the rotating part of a helicopter which generates lift. The rotor consists of a mast, hub, and rotor blades. The mast is a hollow cylindrical metal shaft which extends upwards from ... driven and sometimes supported by the transmission. At the top of the mast is the attachment point for the rotor blades called the hub. The rotor blades are then attached to the hub by any number of different methods. Main…
Helicopter Flying Handbook p. 4-4
Chapter 4: Helicopter Components, Sections, and Systems › Main Rotor System › Fully Articulated Rotor System
Fully Articulated Rotor System Fully articulated rotor systems allow each blade to lead/lag (move back and forth in plane), flap (move up and down about an inboard mounted hinge) independent of the other blades, and feather (rotate about the pitch ... lift). [Figures 4-6 and 4-7] Each of these blade motions is related to the others. Fully articulated rotor systems are found on helicopters with more than two main rotor blades. Figure 4-5. Differences in handling between…
Helicopter Flying Handbook p. 1-3
Chapter 1: Introduction to the Helicopter › Rotor System
Rotor System The helicopter rotor system is the rotating part of a helicopter that generates lift. A rotor system may be mounted horizontally, as main rotors are, providing lift vertically; and it may be mounted vertically, such as a tail ... rotor, to provide lift horizontally as thrust to counteract torque effect. In the case of tilt rotors, the rotor is mounted on a nacelle that rotates at the edge of the wing to transition the rotor from a horizontal mounted…
Aviation Maintenance Technician Handbook - Airframe p. 2-29
Chapter 2: Aerodynamics, Aircraft Assembly, & Rigging › Rotorcraft Controls › Antitorque Pedals
opposite direction of the main rotor blades unless counteracted and controlled. To make flight possible and to compensate for this torque, most helicopter designs incorporate an antitorque rotor or tail rotor. The antitorque pedals allow the pilot to control ... pitch angle on the tail rotor blades to be increased or decreased. Helicopters that are designed with tandem rotors do not have an antitorque rotor. These helicopters are designed with both rotor systems rotating in opposite directions to counteract…