CH.I.G.K1c
KnowledgeHelicopter systems, including:
Main rotor and antitorque systems
From the FAA library
- Chapter 4: Helicopter Components, Sections, and Systems › Antitorque System
Antitorque System Helicopters with a single, main rotor system require a separate antitorque system. This is most often accomplished through a variable pitch, antitorque rotor or tail rotor. [Figure 4-13] Pilots vary ... thrust of the antitorque system to maintain directional control whenever the main rotor torque changes, or to make heading changes while hovering. Most helicopters drive the tail rotor shaft from the transmission to ensure tail rotor rotation (and hence control…
- Chapter 11: Helicopter Emergencies and Hazards › System Malfunctions › Loss of Tail Rotor Effectiveness (LTE)
total lift might be less than needed to remain airborne. Every helicopter design requires some type of antitorque system to counteract main rotor torque and prevent spinning once the helicopter lifts off the ground. A helicopter is heavy…
- Chapter 4: Helicopter Components, Sections, and Systems › Main Rotor System › Intermeshing Rotors
main disadvantage of coaxial rotors is the increased mechanical complexity of the rotor system. Numerous Russian helicopters, such as the Kaman Ka-31 and Ka-50, along with the Sikorsky experimental X2 use a coaxial rotor design. Intermeshing Rotors ... rotor system is a set of two rotors turning in the opposite directions with each rotor mast mounted on the helicopter with a slight angle, so the blades intermesh without colliding. This design also eliminates the need for an antitorque…
- Chapter 3: Helicopter Flight Controls › Antitorque Pedals
pitch and therefore the thrust of the tail rotor blades or other antitorque system. See Chapter 5, Helicopter Components, Sections, and Systems, for a discussion on these other systems. [Figure 3-5] Newton’s Third Law was discussed in Chapter ... rotation in the 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…
- Chapter 1: Introduction to the Helicopter › Rotor System
Sections, and Systems. With a single main rotor helicopter, a torque effect is created as the engine turns the rotor. This torque causes the body of the helicopter to turn in the opposite direction of the rotor (Newton’s Third ... traditional tail rotor, Fenestron (also called a fantail), and the NOTAR®. All three antitorque designs will be discussed in Chapter 4, Helicopter Components, Sections, and Systems. Figure 1-4. Basic components of the rotor system…
- Chapter 1: Aircraft Structures › Powerplant & Transmission › Turbine Engines
engine. Figure 1-93. The major components of a helicopter are the airframe, fuselage, landing gear, powerplant/transmission, main rotor system, and antitorque system…