Sport Pilot for Helicopter - Simplified Flight Controls › I. Preflight Preparation › Task G. Operation of Systems

SH.I.G.K1c

Knowledge

Helicopter-Simplified Flight Control systems, including:

Main rotor(s) and antitorque systems, as applicable

Study note

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. 4-2
Chapter 4: Helicopter Components, Sections, and Systems › Main Rotor System › Semirigid Rotor System
Since there is no vertical drag hinge, lead/ lag forces are absorbed and mitigated by blade bending. The semirigid rotor is also capable of feathering, which means that the pitch angle of the blade changes. This is made possible ... feathering hinge. [Figure 4-2] If the semirigid rotor system is an underslung rotor, the center of gravity (CG) is below where it is attached to the mast. This underslung mounting is designed to align the blade’s center…
Aviation Maintenance Technician Handbook - Airframe p. 1-40
Chapter 1: Aircraft Structures › Powerplant & Transmission › Turbine Engines
expensive to operate. The turbine engine used in helicopters operates differently than those used in airplane applications. In most applications, the exhaust outlets simply release expended gases and do not contribute to the forward motion of the helicopter. Because ... engine. Figure 1-93. The major components of a helicopter are the airframe, fuselage, landing gear, powerplant/transmission, main rotor system, and antitorque system…