On the diagram the rotating blade pitch control is indicated by the letter 2436 ?
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Other study patent: Telepilote theorique examen 38
What is a typical characteristic of a fully articulated rotor system ?
Which of the following statements with respect to the rotor brake is correct ?
A rotor fully articulated when The blades each have possibility to flap drag feather separately. 
The chord length of blades of a ducted tail rotor fenestron Smaller than that of a classic tail rotor. 
An elastomeric bearing flapping hinge in rotor head Contributes to a reduced maintenance effort. 
What are elastomeric bearing hinges in a rotor head Flexible sections accomplishing functions of flapping dragging feathering hinges. Question 38-8
Intermediate or angle gearboxes are used to Change direction sometimes speed of tail rotor drive. Question 38-9
To engage main rotor drive prior to flight on a helicopter fitted with a centrifugal clutch pilot should Smoothly accelerate engine with rotor brake selected off. Question 38-10
The tail rotor gearbox changes direction of drive Through 9 ° reduces rotational speed provides facilities tail rotor control. the antitorque rotor (tail rotor) driven from transmission the antitorque rotor produces thrust to oppose torque helps prevent helicopter from turning in opposite direction of main rotor. Question 38-11
The purpose of a clutch in a helicopter transmission system to Permit engine to be started with a low inertial loading. the antitorque rotor (tail rotor) driven from transmission the antitorque rotor produces thrust to oppose torque helps prevent helicopter from turning in opposite direction of main rotor. Question 38-12
Rotational drive from gearbox to rotorhead transmitted the Permit engine to be started with a low inertial loading. the antitorque rotor (tail rotor) driven from transmission the antitorque rotor produces thrust to oppose torque helps prevent helicopter from turning in opposite direction of main rotor. Question 38-13
Intermediate or angle gearboxes are used to Change direction speed of tail rotor drive. the antitorque rotor (tail rotor) driven from transmission the antitorque rotor produces thrust to oppose torque helps prevent helicopter from turning in opposite direction of main rotor. Question 38-14
In a free turbine helicopter installation There no need a clutch between engine the transmission. the antitorque rotor (tail rotor) driven from transmission the antitorque rotor produces thrust to oppose torque helps prevent helicopter from turning in opposite direction of main rotor. Question 38-15
Helicopters which utilise a ''v' belt to transmit drive from engine to transmission also incorporate ''belt tightener' these belt tighteners serve as There no need a clutch between engine the transmission. the antitorque rotor (tail rotor) driven from transmission the antitorque rotor produces thrust to oppose torque helps prevent helicopter from turning in opposite direction of main rotor. Question 38-16
Freewheel units between engine and main rotor gearbox are in most cases lubricated from The main rotor gearbox lubrication system. the antitorque rotor (tail rotor) driven from transmission the antitorque rotor produces thrust to oppose torque helps prevent helicopter from turning in opposite direction of main rotor. Question 38-17
For a free power turbine engine The turbine driving main rotor transmission mechanically independent from gas generator. the antitorque rotor (tail rotor) driven from transmission the antitorque rotor produces thrust to oppose torque helps prevent helicopter from turning in opposite direction of main rotor. Question 38-18
Clutches are located in drive between engine and main transmission on Helicopters with piston or direct drive gas turbine engines. the antitorque rotor (tail rotor) driven from transmission the antitorque rotor produces thrust to oppose torque helps prevent helicopter from turning in opposite direction of main rotor. Question 38-19
A tail rotor drive shaft running between two engines should be Protected a firewall. the antitorque rotor (tail rotor) driven from transmission the antitorque rotor produces thrust to oppose torque helps prevent helicopter from turning in opposite direction of main rotor. Question 38-20
What the purpose of freewheel unit in rotor drive system To disconnect failed engine from main tail rotor drive. the antitorque rotor (tail rotor) driven from transmission the antitorque rotor produces thrust to oppose torque helps prevent helicopter from turning in opposite direction of main rotor. Question 38-21
Does freewheel unit necessary helicopter with free turbine engine To disconnect failed engine from main tail rotor drive. the antitorque rotor (tail rotor) driven from transmission the antitorque rotor produces thrust to oppose torque helps prevent helicopter from turning in opposite direction of main rotor. Question 38-22
A snatch engagement of a freewheel unit May result in shearing of engine drive shaft. the antitorque rotor (tail rotor) driven from transmission the antitorque rotor produces thrust to oppose torque helps prevent helicopter from turning in opposite direction of main rotor. Question 38-23
A mercury clutch Utilises weight of mercury to provide centrifugal force to act on clutch shoes. the antitorque rotor (tail rotor) driven from transmission the antitorque rotor produces thrust to oppose torque helps prevent helicopter from turning in opposite direction of main rotor. Question 38-24
The input and output speeds of an intermediate gearbox Differ to counter effects of vibration. the antitorque rotor (tail rotor) driven from transmission the antitorque rotor produces thrust to oppose torque helps prevent helicopter from turning in opposite direction of main rotor. Question 38-25
Tail rotors rotate At a greater speed than main rotor at a different speed than drive shaft intermediate gearbox. the antitorque rotor (tail rotor) driven from transmission the antitorque rotor produces thrust to oppose torque helps prevent helicopter from turning in opposite direction of main rotor. Question 38-26
Why are one or more flexible couplings usually incorporated in tail rotor drive shafts To absorb angular differences arising from bending of tail. the antitorque rotor (tail rotor) driven from transmission the antitorque rotor produces thrust to oppose torque helps prevent helicopter from turning in opposite direction of main rotor. Question 38-27
Metal tail rotor drive shafts are normally manufactured from Aluminium or steel tubing. the antitorque rotor (tail rotor) driven from transmission the antitorque rotor produces thrust to oppose torque helps prevent helicopter from turning in opposite direction of main rotor. Question 38-28
On diagram flapping hinge indicated number Aluminium or steel tubing. the antitorque rotor (tail rotor) driven from transmission the antitorque rotor produces thrust to oppose torque helps prevent helicopter from turning in opposite direction of main rotor. Question 38-29
When using a strobe type tracking and balancing system on a fully articulated rotor head one blade not equidistant from other blades in lateral plane the cause of this defect that The blade damper on subject blade not functioning correctly. the antitorque rotor (tail rotor) driven from transmission the antitorque rotor produces thrust to oppose torque helps prevent helicopter from turning in opposite direction of main rotor. Question 38-30
What indication will be available to pilot of wear in either tail rotor gimbal or pitch change link bearings Vibration through tail rotor/yaw pedals. the antitorque rotor (tail rotor) driven from transmission the antitorque rotor produces thrust to oppose torque helps prevent helicopter from turning in opposite direction of main rotor. Question 38-31
On diagram lead/lag hinge indicated number 2429 Vibration through tail rotor/yaw pedals. the antitorque rotor (tail rotor) driven from transmission the antitorque rotor produces thrust to oppose torque helps prevent helicopter from turning in opposite direction of main rotor. Question 38-32
On diagram pitch hinge indicated number 2429 Vibration through tail rotor/yaw pedals. the antitorque rotor (tail rotor) driven from transmission the antitorque rotor produces thrust to oppose torque helps prevent helicopter from turning in opposite direction of main rotor. Question 38-33
To ensure centre of pressure of a rotor blade acts through centre of gravity during manufacture A weight placed along length of blade forward of main spar. the antitorque rotor (tail rotor) driven from transmission the antitorque rotor produces thrust to oppose torque helps prevent helicopter from turning in opposite direction of main rotor. Question 38-34
The rotor blades that are most sensitive to humidity are those made of A weight placed along length of blade forward of main spar. the antitorque rotor (tail rotor) driven from transmission the antitorque rotor produces thrust to oppose torque helps prevent helicopter from turning in opposite direction of main rotor. Question 38-35
The purpose of blade tip cap 1 to reduce induced drag2 to increase lift in hover3 to increase max air speedthe combination containing all of correct statements A weight placed along length of blade forward of main spar. the antitorque rotor (tail rotor) driven from transmission the antitorque rotor produces thrust to oppose torque helps prevent helicopter from turning in opposite direction of main rotor. Question 38-36
The purpose of aluminium mesh which manufactured within skin of some fibre glass covered rotor blades ' To provide protection against lightning strikes. the antitorque rotor (tail rotor) driven from transmission the antitorque rotor produces thrust to oppose torque helps prevent helicopter from turning in opposite direction of main rotor. Question 38-37
The purpose of a main rotor blade tracking check to ensure That all blades have same tip path plane. the antitorque rotor (tail rotor) driven from transmission the antitorque rotor produces thrust to oppose torque helps prevent helicopter from turning in opposite direction of main rotor. Question 38-38
The most difficult material from which to manufacture a homogeneous series of blades That all blades have same tip path plane. the antitorque rotor (tail rotor) driven from transmission the antitorque rotor produces thrust to oppose torque helps prevent helicopter from turning in opposite direction of main rotor. Question 38-39
The main spar of a main rotor blade at approximately That all blades have same tip path plane. the antitorque rotor (tail rotor) driven from transmission the antitorque rotor produces thrust to oppose torque helps prevent helicopter from turning in opposite direction of main rotor. Question 38-40
Modern tail rotor blades are usually manufactured from That all blades have same tip path plane. the antitorque rotor (tail rotor) driven from transmission the antitorque rotor produces thrust to oppose torque helps prevent helicopter from turning in opposite direction of main rotor.
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