A free Premium account on the FCL.055 website! Read here


Question 62-1 : When an aircraft has turned 90 degrees with a constant attitude and bank the pilot observes the following on a classic artificial horizon ? [ Theoretical lift off ]

Too much nose up and bank too low

For a classic artificial horizon air driven artificial horizon not for an electric artificial horizon since the pendulous vanes are affected by a horizontal acceleration as well as acceleration due to gravity errors in pitch and roll indications will occur during the turns the centrifugal force will act on the fore and aft pendulous vanes erection error and weighted base of the rotor housing pendulosity error .the errors are complex and change as the turn progresses cancelling out after a 360° turn the magnitude of the errors varies with speed rate of turn and type of horizon .the following errors will occur .after 90° of turn too much nose up and bank too low .after 180° of turn too much nose up and bank correct .after 270° of turn too much nose up and too much bank .after 360° of turn attitude and bank correct exemple 162 Too much nose-up and bank too low.

Question 62-2 : The gyroscope of a turn indicator has . nb the degree s of freedom of a gyro does not take into account its rotor spin axis ?

1 degree of freedom

exemple 166 1 degree of freedom.

Question 62-3 : The indication of the directional gyro is valid only for a limited period of time the causes of this inaccuracy are . 1 rotation of the earth. 2 longitudinal accelerations. 3 aircraft's moving over the surface of the earth. 4 vertical components of the earth's magnetic field.the combination ?

1 3

A directional gyro consists of a 2 degrees of freedom horizontal axis gyro .it must be aligned and corrected by the pilot due to .rotation of the earth .apparent drift due to the earth's rotation is .15 x sin latitude in degrees per hour.the latitude in this case is the latitude of the actual position of the aircraft .for latitude change flight north or south take the mean aircraft latitude for the period involved .aircraft's moving over the surface of the earth transport wander .as the gyro is moved from one point on the earth to another the gyro maintains its orientation in space .however the direction of true north changes .further you travel in an east/west sense the greater the change .transport wander is the apparent loss of alignment caused by east /west travel and its value is simply the convergency between two points .transport wander in degrees = change of longitude x sin mean latitude.transport wander in an easterly direction will have a different sign from transport wander in a westerly direction exemple 170 1, 3.

Question 62-4 : An airborne instrument equipped with a gyro with 2 degrees of freedom and a horizontal spin axis is .nb the degree s of freedom of a gyro does not take into account its rotor spin axis ?

A directional gyro

A gyro with 2 degrees of freedom and a horizontal spin axis is a directional gyro .a gyro with 1 degree of freedom and a horizontal spin axis is a turn indicator exemple 174 A directional gyro.

Question 62-5 : An airborne instrument equipped with a gyro with 1 degree of freedom and a horizontal spin axis is a nb the degree s of freedom of a gyro does not take into account its rotor spin axis ?

Turn indicator

Admin .a gyro with 2 degrees of freedom and a horizontal spin axis is a directional gyro . a gyro with 1 degree of freedom and a horizontal spin axis is a turn indicator exemple 178 Turn indicator.

Question 62-6 : In a turn at a constant angle of bank the turn indicator reading is ?

Inversely proportional to the aircraft true airspeed

.in a turn at a constant angle of bank a decrease in aircraft true airspeed involves an increase in rate of turn .rate of turn and tas are inversely proportional .example .rate of turn 3°/sec rate one turn .tas 100 kt .bank angle 15° .if now speed becomes 80 kt the turn indicator which previously show a 'rate one turn' is now showing more than a 'rate one turn'

Question 62-7 : At a low bank angle the measurement of rate of turn actually consists in measuring the ?

Yaw rate of the aircraft

Admin .turn indicators and turn coordinators actually measure rate of yaw up to rate 1 the rate of yaw and rate of turn are virtually the same exemple 186 Yaw rate of the aircraft.

Question 62-8 : The rate of turn is the ?

Change of heading rate of the aircraft

.the rate of turn is the number of degrees your heading changes in a period of time usually one second or one minute .a standard rate turn typically spoken of in terms of instrument flight is performed at 180 degrees of heading change in a one minute period this gives a complete 360° turn in two minutes

Question 62-9 : On the ground during a right turn the turn indicator indicates ?

Needle to the right ball to left

exemple 194 Needle to the right, ball to left

Question 62-10 : On the ground during a left turn the turn indicator indicates ?

Needle to the left ball to the right

exemple 198 Needle to the left, ball to the right.

Question 62-11 : When in flight the needle and ball of a needle and ball indicator are on the left the aircraft is ?

Turning left with too much bank

exemple 202 Turning left with too much bank

Question 62-12 : When in flight the needle and ball of a needle and ball indicator are on the right the aircraft is ?

Turning right with too much bank

exemple 206 Turning right with too much bank

Question 62-13 : When in flight the needle of a needle and ball indicator is on the right and the ball on the left the aircraft is ?

Turning right with not enough bank

exemple 210 Turning right with not enough bank

Question 62-14 : When in flight the needle of a needle and ball indicator is on the left and the ball on the right the aircraft is ?

Turning left with not enough bank

exemple 214 Turning left with not enough bank

Question 62-15 : A stand by horizon or emergency attitude indicator ?

Contains its own separate gyro

exemple 218 Contains its own separate gyro

Question 62-16 : In the building principle of a gyroscope the best efficiency is obtained through the concentration of the mass ?

On the periphery and with a high rotational speed

exemple 222 On the periphery and with a high rotational speed.

Question 62-17 : The diagram representing a left turn with insufficient rudder is . 1045 ?

4

Fgabrys .i'm pretty sure that the correct answer is n°3 the diagram n°4 represents a left turn with too much rudder . .in a slipping turn the ball will be displaced in the direction of turn in the opposite direction for a skidding turn . 995.you now have two solutions .push on the left rudder pedal or decrease the bank angle exemple 226 4.

Question 62-18 : The maximum directional gyro error due to the earth rotation is ?

15°/hour

.apparent drift due to the earth's rotation is .15° x sin latitude in degrees per hour.the latitude in this case is the latitude of the actual position of the aircraft .for latitude change flight north or south take the mean aircraft latitude for the period involved exemple 230 15°/hour.

Question 62-19 : Heading information given by a gyro platform is given by a gyro at ?

2 degrees of freedom in the horizontal axis

A directional gyro consists of a 2 degrees of freedom horizontal axis gyro it must be aligned and corrected by the pilot drift due to the earth's rotation and transport wander exemple 234 2 degrees-of-freedom in the horizontal axis.

Question 62-20 : Among the systematic errors of the 'directional gyro' the error due to the earth rotation make the north reference turn in the horizontal plane .at a mean latitude of 45°n this reference turns by ?

10 5°/hour to the right

Admin .earth rate is 15°/h .at 45°north the earth rate is 15°/h x sin 45° = 10 6°/h .in northern hemisphere the gyro is drifting at a rate of 15°/h to the right the heading increases exemple 238 10.5°/hour to the right.

Question 62-21 : A turn indicator is an instrument which indicates rate of turn rate of turn depends upon .1 bank angle .2 aeroplane speed .3 aeroplane weight .the combination regrouping the correct statements is ?

1 and 2


Question 62-22 : The diagram which shows a 40° left bank and 15° nose down attitude is number . 1046 ?

1

Img996.your aircraft is seen from behind exemple 246 1.

Question 62-23 : The heading read on the dial of a directional gyro is subject to errors one of which is due to the movement of the aircraft this error ?

Is dependent on the ground speed of the aircraft its true track and the latitude of the flight

Buhoraptor .and if it is on the equator . .the error depends upon the position of the aircraft on earth the drift error = 0 at the equator but this is not what the question states the question states that the apparent drift error depends on the ground speed the true track and the latitude even if it is on the equator and if the resulting error is zero exemple 250 Is dependent on the ground speed of the aircraft, its true track and the latitude of the flight.

Question 62-24 : A gravity erector system is used to correct the errors on ?

An artificial horizon

exemple 254 An artificial horizon.

Question 62-25 : During a deceleration phase at constant attitude the control system of an air driven artificial horizon results in the horizon bar indicating a ?

Nose down attitude

.errors in the artificial horizon suction .acceleration errors linear acceleration .these errors are also known as 'takeoff' errors as they are most noticeable during takeoff two elements cause the errors . the pendulous unit. the vanes ..error from the pendulous unit .the pendulous unit makes the rotor bottom heavy .as the aircraft accelerates a force from inertia of the unit is felt at the bottom and the unit tends.to lag behind it tends to swing the bottom of the gyro towards the pilot .air driven rotors spin anti clockwise when viewed from above so this inertial force will precess.through 90° in an anti clockwise direction lifting up the right hand side of the outer gimbal .the skyplate attached to the outer gimbal rotates in an anti clockwise direction lifting up the right.hand side of the outer gimbal the skyplate attached to the outer gimbal rotates anti clockwise.and the bank indicates a false right bank ..error from exhaust vanes .during acceleration the vanes on the right and left sides are thrown rearward .the result is that the right hand port is more than half open and the left side port is more than.half closed this upsets the balanced exhaust of air more air being discharged from the right.side than from the left side the reaction occurs on the left side and precesses through 90° and.lifts up the inner gimbal from the point nearest the pilot to indicate a false climb .thus with the gyro running anti clockwise a slight indication of right bank and climb are obtained.during an acceleration exemple 258 Nose down attitude.

Question 62-26 : In a directional gyro gimballing errors are due to ?

A banked attitude

.the term 'gimballing error' is used to describe the errors which occur when the gyro has reached its physical limit in pitch or roll .any gimballing errors are due to banked attitudes and will disappear after the turn is complete exemple 262 A banked attitude.

Question 62-27 : Parallax error is ?

A reading error

Admin . 1002.the ball is centered parallax error is due to a reading under an oblique angle exemple 266 A reading error.

Question 62-28 : The apparent wander of a directional gyro is 15°/h ?

At the north pole

.15°/h at poles and 0° at the equator exemple 270 At the north pole

Question 62-29 : The artificial horizon uses a gyroscope with . note the degree s of freedom of a gyro does not take into account its rotor spin axis ?

Two degrees of freedom and its rotor spin axis is continuously maintained to local vertical by an automatic erecting system

exemple 274 Two degrees of freedom, and its rotor spin axis is continuously maintained to local vertical by an automatic erecting system.

Question 62-30 : The inertia of a gyroscope is greater when its rotation speed is ?

Higher and the mass of the spinning wheel is located further from the axis of rotation

exemple 278 Higher and the mass of the spinning wheel is located further from the axis of rotation.

Question 62-31 : The rate of turn indicator uses a gyroscope . .1 the spinning wheel axis of which is parallel to the yawing axis.2 the spinning wheel axis of which is parallel to the pitch axis.3 the spinning wheel axis of which is parallel to the roll axis.4 with one degree of freedom.5 with two degrees of ?

2 4

Admin .the spin axis of the turn indicator gyro is aligned along the pitch axis lateral axis . 1003. 2389.the number of independent ways by which a dynamical system can move without violating any constraint imposed on it is called degree of freedom the gyro in the turn and slip indicator rotates in the vertical plane one degree of freedom only corresponding to the airplane's longitudinal axis a single gimbal limits the planes in which the gyro can tilt and a spring tries to return it to center exemple 282 2, 4.

Question 62-32 : The latitude at which the apparent wander of a directional gyro is equal to 0 is ?

The equator

.15°/h at poles and 0° at the equator exemple 286 The equator.

Question 62-33 : The gyroscope used in an attitude indicator has a spin axis which is ?

Vertical

exemple 290 Vertical.

Question 62-34 : For an aircraft flying a true track of 360° between the 5°s and 5°n parallels the precession error of the directional gyro due to apparent drift is equal to ?

Approximately 0°/hour

exemple 294 Approximately 0°/hour

Question 62-35 : A rate gyro is used in a .1 directional gyro indicator.2 turn co ordinator.3 artificial horizon.the combination regrouping all the correct statements is ?

2

.an instrument which measures the rate of rotation of an object about an axis a spinning gyroscope precesses or tilts when it is rotated in a plane at right angles to its own spin axis the amount the gyroscope tilts is proportional to the rate at which it is rotated about an axis at right angles to both its spin axis and the axis of its precession the axis about which it tilts rate gyros are used in turn and slip indicators and turn coordinators . 1003.the spin axis of the turn indicator gyro is aligned along the pitch axis lateral axis of the aircraft exemple 298 2.

Question 62-36 : A directional gyro consists of a .nb the degree s of freedom of a gyro does not take into account its rotor spin axis ?

2 degrees of freedom horizontal axis gyro

exemple 302 2 degrees-of-freedom horizontal axis gyro.

Question 62-37 : The spin axis of the turn indicator gyro is aligned along the ?

Lateral axis of the aircraft

The spin axis of the turn indicator gyro is aligned along the pitch axis lateral axis . 1003. 2389 exemple 306 Lateral axis of the aircraft.

Question 62-38 : The properties of a gyroscope are .1 rigidity in space .2 rigidity on earth .3 precession .4 schuler oscillations .the combination regrouping all the correct statements is ?

1 3

exemple 310 1, 3.

Question 62-39 : The rate of turn given by the rate of turn indicator is valid ?

For the airspeed range defined during the calibration of the instrument

exemple 314 For the airspeed range defined during the calibration of the instrument.

Question 62-40 : Without any external action the axis of a free gyroscope is fixed with reference to ?

Space

exemple 318 Space.


~

Exclusive rights reserved. Reproduction prohibited under penalty of prosecution.

2439 Free Training Exam