When using a strobe type tracking and balancing system on a fully articulated ? [ Adult Manual ]

Question 53-1 : The blade damper on the subject blade is not functioning correctly the blade rigging is out of adjustment the pitch change rod is not correctly adjusted the blade trim tabs are not correctly adjusted

What indication will be available to the pilot of wear in either tail rotor ?

Question 53-2 : Vibration through the tail rotor/yaw pedals stiffness in the tail rotor controls instability in pitch control loud noise from the tail rotor

On the diagram the lead/lag hinge is indicated by number . 2429 ?

Question 53-3 : 2 1 3 4

On the diagram the pitch hinge is indicated by number . 2429 ?

Question 53-4 : 3 2 1 4

To ensure the centre of pressure of a rotor blade acts through the centre of ?

Question 53-5 : A weight is placed along the length of the blade forward of the main spar the aerofoil is designed to ensure the centre of pressure is in the correct location weights are located at the tip of the blade which are adjusted at manufacture to ensure the centre of gravity is in the correct location trim tabs are fitted to the tailing edge of the blade to adjust the centre of pressure

The rotor blades that are most sensitive to humidity are those made of ?

Question 53-6 : Wood metal composite materials plastic

The purpose of the blade tip cap is .1 to reduce induced drag.2 to increase ?

Question 53-7 : 1 2 3 1 2 2 3 1 3

The purpose of the aluminium mesh which is manufactured within the skin of some ?

Question 53-8 : To provide protection against lightning strikes to form the shape of the blade and to allow the lay up of the fibre glass skin to provide a superior bond between the skin and the foam core providing a strong rigid section to transfer flight loads to the skin

The purpose of a main rotor blade tracking check is to ensure ?

Question 53-9 : That all blades have the same tip path plane the correct coning angle that the neutral control settings are correct that the pitch angle for all blades is absolutely equal

The most difficult material from which to manufacture a homogeneous series of ?

Question 53-10 : Wood metal composite materials plastic

The main spar of a main rotor blade is at approximately ?

Question 53-11 : 25% of the chord 35% of the chord 40% of the chord 50% of the chord

Modern tail rotor blades are usually manufactured from ?

Question 53-12 : Composite materials metal wood carbon fibre

Low frequency vibration in the vertical plane which is only apparent in high ?

Question 53-13 : Badly adjusted tab on the main rotor blade badly adjusted rod on the main rotor blade mass imbalance of the main rotor mass imbalance of the tail rotor

Low frequency vibration in a plane parallel to the rotor plane is likely to be ?

Question 53-14 : An out of balance main rotor an out of balance tail rotor an engine problem a transmission problem

Erosion strips fitted to the leading edge of rotor blades are usually ?

Question 53-15 : Nickel titanium or stainless steel aluminium titanium or stainless steel aluminium nickel or titanium tungsten nickel or stainless steel

Dynamic balancing of main rotor systems ?

Question 53-16 : Is usually achieved by adding or subtracting weights to either the main rotor blade attachment pins or to the main rotor head itself is usually achieved by adding weights to certain nominated rotor blades only is usually achieved by adding or subtracting weights to the main rotor blade tips is not necessary as the hub and blades are statically balanced at manufacture

During a flight under normal conditions a main rotor blade is seen to be flying ?

Question 53-17 : Adjusting the trim tabs on the subject blade lengthening the pitch change rod on the subject blade shortening the pitch change rod on the subject blade adjusting the weights on the blade tip

Tail rotor blade hinges arranged with a ''delta three'' hinge effect ?

Question 53-18 : Decrease their pitch angle with flap up increase the lift of the blade with flap up decrease their pitch angle with blade dragging increase their pitch angle with flap up

Adjusting an outboard blade tab upwards will produce a ?

Question 53-19 : Nose up moment on the blade nose down moment on the blade medium frequency vibration in flight high frequency vibration in flight

A rotor blade trim tab provides a corrective force ?

Question 53-20 : Indirectly by causing the pitch angle to change thus altering blade lift in the appropriate sense by varying blade drag so repositioning the blade in azimuth relative to other blade s directly by its displacement causing the blade to track in the correct plane indirectly by adjusting the centre of gravity of the blade longitudinally thus causing the blade to track in the correct plane

A rotor blade running out of track produces ?

Question 53-21 : A vertical vibration once per revolution a lateral vibration once per revolution a vertical vibration four times per revolution in a four bladed rotor system a lateral vibration three and five times per revolution in a four bladed rotor system

Wind gusts have a greater adverse effect on ?

Question 53-22 : Semi rigid rotors due to their see saw flapping rigid rotors due to the lack of a flapping hinge fully articulated rotors as the gust will cause the blade to flap thus altering the pitch angle fully articulated rotors as the flapping blades will induce vibration

The epr engine pressure ratio is computed by ?

Question 53-23 : Dividing turbine discharge pressure by compressor inlet pressure dividing compressor discharge pressure by turbine discharge pressure multiplying compressor inlet pressure by turbine discharge pressure multiplying compressor discharge pressure by turbine inlet pressure

A thermocouple type thermometer consists of ?

Question 53-24 : Two metal conductors of different type connected at two points two metal conductors of the same type connected at two points a single wire coil a wheatstone bridge connected to a voltage indicator

One of the disadvantages of an electronic tachometer is the ?

Question 53-25 : Necessity of a power supply generation of spurious signals at the commutator influence of temperature on the indication high influence of line resistance on the indication

The principle of capacity gauges is based on the capacitance variation of ?

Question 53-26 : A capacitor with the type of dielectric two dissimilar metals joined together at their ends two dissimilar metals joined together at one end only liquids with the variations in temperature

A synchroscope is used on aircraft to ?

Question 53-27 : Set several engines to the same speed reduce the vibration of each engine reduce the rpm of each engine achieve optimum control of on board voltages

The 'bourdon tube' is used to measure ?

Question 53-28 : Pressure temperature quantity a flow rate

If a manifold pressure gauge consistently registers atmospheric pressure the ?

Question 53-29 : Leak in pressure gauge line too high float level fuel of too low volatility ice in induction system

A manifold pressure gauge of a piston engine measures ?

Question 53-30 : Absolute pressure in intake system near the inlet valve vacuum in the carburettor fuel pressure leaving the carburettor absolute airpressure entering the carburettor

In an engine vibration monitoring system for a turbojet any vibration produced ?

Question 53-31 : Amplified and filtered before being fed to the cockpit indicator inversely proportional to engine speed directly proportional to engine speed fed directly to the cockpit indicator without amplification or filtering

According to the range of pressure to be measured low medium high different ?

Question 53-32 : 3 1 and 2 2 1 and 3 1 2 and 3 3 2 and 1

A vibration indicator receives a signal from different sensors accelerometers ?

Question 53-33 : Vibration amplitude at a given frequency vibration frequency expressed in hz vibration period expressed in seconds acceleration measured by the sensors expressed in g

The transmitter of rpm indicator may consist of .1 a magnetic sensor supplying ?

Question 53-34 : 1 2 3 4 1 2 3 2 3 4 1 4

The indication of a fuel float gauge varies with . 1 pitch attitude. 2 ?

Question 53-35 : 1 2 3 1 3 1 2 2 3

If the tanks of your aircraft only contain water the capacitor gauges indicate ?

Question 53-36 : A mass of water different from zero but inaccurate the exact mass of water contained in the tanks a mass equal to zero a mass equal to the mass of a same volume of fuel

The float type fuel gauges provide information on ?

Question 53-37 : Volume whose indication varies with the temperature of the fuel volume whose indication is independent of the temperature of the fuel mass whose indication varies with the temperature of the fuel mass whose indication is independent of the temperature of the fuel

The sensors used to measure the exhaust gas temperature on an aircraft equipped ?

Question 53-38 : Thermocouples based on metallic parts whose expansion/contraction is measured based on metallic conductors whose resistance increases linearly with temperature capacitors whose capacity varies proportionally with temperature

The measurement of the turbine temperature or of the tgt turbine gas ?

Question 53-39 : High pressure turbine outlet combustion chamber outlet combustion chamber intake high pressure chamber intake

The two main sources of information used to calculate turbojet thrust are the ?

Question 53-40 : Fan rotation speed or n1 or the epr engine pressure ratio high pressure turbine rotation speed or the epr engine pressure ratio fan rotation speed or n1 or the total pressure at the high pressure compressor outlet fan rotation speed or n1 or the total pressure at the low pressure turbine outlet