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PRINCIPLES OF FLIGHT 080

P55
Quiz by JoonaT
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Last updated: September 7, 2022
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First submittedSeptember 1, 2022
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1. Which wing shape has the greatest induced drag?
Double taper ✓
Elliptical. ✓
Rectangular. ✓
Taper ✓
2. An aeroplane wing stalls when:
The laminar airflow becomes turbulent ✓
It is subjected to unusually high 'G'forces. ✓
The critical angle of attack is exceeded. ✓
The indicated airspeed is too low. ✓
3. Yawing is movement around the ____ axis.
Horizontal. ✓
Normal. ✓
Lateral ✓
Longitudinal. ✓
4. When the aircraft is in a spin, the direction of spin is most reliably found by reference to which of the following indications?
Turn needle ✓
Artificial horizon. ✓
Direction indicator. ✓
Slip indicator. ✓
5. If the indicated air speed of an aircraft is increased from 50 kts to 100 kts, parasite drag will be
Six times greater. ✓
Two times greater. ✓
One quarter as much. ✓
Four times greater. ✓
6. An aircraft rotates about:
Its centre of gravity. ✓
Its rudder. ✓
Its main undercarriage. ✓
Its wings ✓
7. If the control column is moved to the right, a balance tab on the left aileron should:
Move up relative to the aileron. ✓
Move down relative to the aileron. ✓
Not move unless the aileron trim wheel is turned. ✓
Move to the neutral position ✓
8. The symbol for dynamic pressure is:
D ✓
Q ✓
R ✓
P ✓
9. If the velocity of an airstream is doubled the drag coefficient will:
Increase 6-times ✓
Increase 4-times ✓
Not change ✓
Double. ✓
10. If in level flight the airspeed decreases below that for maximum lift/drag, the effect will be that:
Drag decreases because of lower induced drag. ✓
Drag increases because of increased parasite drag. ✓
Drag decreases because of lower parasite drag. ✓
Drag increases because of increased induced drag. ✓
11. If the angle of attack and other factors remain constant, and the airspeed is doubled, lift will be:
The same ✓
Doubled. ✓
One quarter of what it was. ✓
Quadrupled. ✓
12. The definition of lift is:
The aerodynamic force which acts perpendicular to the upper surface of the aerofoil. ✓
The aerodynamic force which acts perpendicular to the chord line of the aerofoil. ✓
The aerodynamic force that results from the pressure differentials about an aerofoil. ✓
The aerodynamic force which acts at 90° to the relative airflow. ✓
13. What is the load factor in a 60° banked level turn? (See LAPL/PPL 080-01)
2.0 G ✓
1 G ✓
0.5 G ✓
1.5 G ✓
14. An aeroplane which is inherently stable will:
Require less effort to control. ✓
Have a built-in tendency to return to its original state following the removal of any disturbing force. ✓
Be difficult to stall. ✓
Not spin. ✓
15. When an aircraft is in a steady climb, the aerodynamic lift is ____ the weight.
Less than ✓
Equal to. ✓
Greater than. ✓
Balanced by. ✓
16. A pilot lowers the flaps while keeping the airspeed constant. In order to maintain level flight, the angle of attack:
Must be reduced. ✓
Must be increased. ✓
Must be kept constant and power required will be constant. ✓
Must be kept constant but power must be increased. ✓
17. The stalling speed of an aircraft in straight and level flight is 60 kt, lAS. What is its stalling speed in a level 60° banked turn?
43 kt. ✓
85 kt. ✓
60 kt. ✓
120 kt. ✓
18. Assuming that the pressure at sea level is ISA, but the temperature is 10 C higher than ISA, the density will be:
Unaffected. ✓
Greater than ISA. ✓
As per ISA. ✓
Less than ISA. ✓
19. An aircraft's rudder is fitted with a balance tab. Movement of the rudder bar to the right, to yaw the aircraft to the right, will move the balance tab to the:
Left and the rudder to the right. ✓
Right and the rudder to the left. ✓
Left and the rudder to the left ✓
Right and the rudder to the right. ✓
20. The angle of climb is proportional to:
The angle of attack of the wing. ✓
The amount by which the thrust exceeds the drag ✓
The amount by which the lift exceeds the weight. ✓
The amount by which the thrust exceeds the weight. ✓
21. If the control column is moved forward and to the left:
The left aileron moves down, right aileron moves up, elevator moves down. ✓
The left aileron moves down, right aileron moves up, elevator moves up. ✓
The left aileron moves up, right aileron moves down, elevator moves down. ✓
The left aileron moves up, right aileron moves down, elevator moves up. ✓
22. The basic stalling speed of an aeroplane is 80 knots. In a level turn with 45° angle bank, the stalling speed is:
86 kt. ✓
95 kt. ✓
33 kt ✓
113 kt. ✓
23. During a manoeuvre, the ailerons are deflected and returned to neutral when the aircraft has attained a small angle of bank. If the aircraft then returns to a wings- level attitude without further control movement, it is:
Statically stable but dynamically neutral. ✓
Statically stable. ✓
Statically and dynamically stable. ✓
Neutrally stable ✓
24. If the cross sectional area of an airflow is mechanically reduced:
The velocity of the airflow remains constant and the mass flow increases. ✓
The mass flow remains constant and the velocity of the airflow increases. ✓
The velocity of the airflow remains constant and the kinetic energy increases. ✓
The mass flow remains constant and the static pressure increases. ✓
25. An aircraft is disturbed from its flight path by a gust of wind. If it tends to return to its original flight path without pilot intervention, the aircraft is said to possess:
Negative Dynamic Stability. ✓
Positive Dynamic Stability. ✓
Instability. ✓
Neutral Dynamic Stability. ✓
26. Which flying control surface(s) give(s) longitudinal control?
The rudder ✓
The elevator. ✓
The flaps. ✓
The ailerons. ✓
27. As indicated air speed (lAS) is reduced, in order to maintain altitude, the pilot must:
Deploy the speed brakes to increase drag. ✓
Reduce the thrust. ✓
Increase the angle of attack to maintain the correct lift force. ✓
Decrease the angle of attack to reduce the drag. ✓
28. Considering the forces acting upon an aeroplane, at constant airspeed, which statement is correct?
Weight always acts vertically downwards towards the centre of the Earth. ✓
Lift acts perpendicular to the chord line and must always be greater than weight. ✓
Thrust acts parallel to the relative airflow and is greater than drag. ✓
The lift force generated by the wings always acts in the opposite direction to the aircraft's weight. ✓
29. The purpose of a trim tab is:
To assist the pilot in initiating movement of the controls. ✓
To increase the effectiveness of the controls. ✓
To zero the load on the pilots controls in the flight attitude required. ✓
To provide feel to the controls at high speed. ✓
30. At the stall, the Centre of Pressure moving backwards will cause the nose to ____, and the decreased lift will cause the aircraft to ____.
Rise / sink. ✓
Drop / lose height ✓
Yaw / reduce speed ✓
Drop / reduce speed. ✓
31. Dynamic pressure may be expressed by the formula:
Q = 1/2pV². ✓
Q = 2pV. ✓
Q = 1/3pV². ✓
Q = pV ✓
32. As airspeed increases, induced drag:
Decreases. ✓
Remains unchanged. ✓
Is dependant on the weight of the aircraft. ✓
Increases. ✓
33. A high wing configuration with no dihedral, compared to a low wing configuration with no dihedral, will provide:
Greater lateral stability. ✓
The same degree of longitudinal stability as any other configuration because dihedral gives longitudinal stability. ✓
Greater longitudinal stability. ✓
Less lateral stability ✓
34. At a given indicated air speed, what effect will an increase in air density have on lift and drag?
Lift and drag will decrease. ✓
Lift will increase but drag will decrease. ✓
Lift and drag will remain the same. ✓
Lift and drag will increase. ✓
35. The boundary layer consists of:
Turbulent flow at low speeds only. ✓
Laminar and turbulent flow area. ✓
Laminar flow ✓
Turbulent flow. ✓
36. After a disturbance in pitch, an aircraft oscillates in pitch with increasing amplitude. It is:
Statically unstable but dynamically stable ✓
Statically and dynamically unstable. ✓
Statically stable but dynamically unstable. ✓
Statically and dynamically stable. ✓
37. When displacing the ailerons from the neutral position:
Induced drag remains the same; the up-going aileron causes a smaller increase in profile drag than the down-going aileron. ✓
Both cause an increase in induced drag. ✓
The up-going aileron causes an increase in induced drag. ✓
The down-going aileron causes an increase in induced drag. ✓
38. What is the approximate percentage increase of a minimum speed if an aircraft mass is increased for 20%?
0% ✓
10% ✓
20% ✓
120% ✓
39. The maximum speed at which the aircraft can be flown with flaps extended is called:
VFE ✓
VNE ✓
VYSE ✓
VNO ✓
40. When an aircraft is disturbed from its established flight path by, for example, turbulence, it is said to have positive stability if it subsequently:
Re-establishes its original flight path without any input from the pilot. ✓
Becomes further displaced from its original flight path. ✓
Continues to pitch in the disturbed direction until the displacement is resisted by opposing control forces. ✓
Remains on the new flight path. ✓
41. The lateral axis of an aircraft is a line which:
Passes through the wing tips. ✓
Passes through the quarter-chord point of the wing root at right angles to the longitudinal axis. ✓
Passes through the centre of pressure, at right angles to the direction of the airflow. ✓
Passes through the centre of gravity, parallel to a line through the wing tips. ✓
42. The tendency of an aircraft to develop forces which restore it to its original flight situation, when disturbed from a condition of steady flight, is known as:
Instability. ✓
Controllability. ✓
Manoeuvrability. ✓
Stability. ✓
43. Wing leading-edge devices such as slots, designed to allow flight at higher angles of attack, do so by:
Re-energising the airflow over the top of the wing, delaying separation. ✓
Decreasing lift and hence induced drag. ✓
Changing the shape and hence the lift characteristics of the wing. ✓
Providing an extra lifting surface and hence increase the lift available. ✓
44. In sub-sonic airflow, as air passes through a venturi, the mass flow ____ , the velocity ____ and the static pressure ____ .
Remains constant / increases then decreases / increases then decreases. ✓
Decreases then increases / remains constant / increases then decreases. ✓
Remains constant / increases then decreases / decreases then increases. ✓
Decreases then increases / increases then decreases / increases then decreases. ✓
45. The stalling speed of an aircraft, assuming weight to be constant, is a function of the:
Square root of the Load Factor ✓
Indicated airspeed. ✓
Square of the weight. ✓
Inverse of the Load Factor. ✓
46. If the velocity of an air mass is increased:
The mass flow will stay constant, the dynamic pressure will decrease and the static pressure will increase. ✓
The static pressure will remain constant and the kinetic energy will increase. ✓
The dynamic pressure will decrease and the static pressure will increase. ✓
The kinetic energy will increase, the dynamic pressure will increase and the static pressure will decrease. ✓
47. Which of the four answer options most correctly completes the sentence? Increasing speed also increases lift because:
Lift is directly proportional to velocity. ✓
Increasing speed decreases drag. ✓
The increased speed of the air passing over an aerofoil's upper surface decreases the static pressure above the wing, thus creating a greater pressure differential across the upper and lower surface. ✓
The increased velocity of the relative wind overcomes the increased drag. ✓
48. Which flying control surface(s) give(s) control about the aircraft's normal axis?
The flaps. ✓
The rudder ✓
The elevator ✓
The ailerons. ✓
49. At a constant angle of attack, a decrease in the airspeed of an aircraft will result in:
An increase in lift and a decrease in drag. ✓
An increase in drag and a decrease in lift. ✓
A decrease in lift and drag. ✓
Possible increases or decreases in lift or drag, depending on the actual speed. ✓
50. What is the significance of the speed known as VNO?
It is the maximum speed at which abrupt movements of the controls will result in a stall, before the aircraft's positive load limit is exceeded. ✓
It signifies the upper limit of the normal operating speed range ✓
It signifies the airspeed which must never be exceeded ✓
It is the speed beyond which structural failure of the airframe will occur. ✓
51. A control surface may be mass balanced by:
Fitting a balance tab ✓
Attaching weight acting aft of the hinge line ✓
Attaching a weight acting forward of the hinge line. ✓
Fitting an anti-balance tab. ✓
52. If a landing is to be made without flaps the landing speed must be:
Reduced. ✓
The same as for a landing with flaps ✓
Increased ✓
The same as for a landing with flaps but with a steeper approach. ✓
53. An aircraft is disturbed from its path by a gust of wind. Neutral stability is when, without pilot intervention, it:
Maintains the new path. ✓
Returns to its original path after overshooting. ✓
Returns to its original path without overshooting. ✓
Continues to move away from the original path. ✓
54. Loading an aircraft so that the C of G exceeds the aft limits could result in:
High stick forces. ✓
Excessive upward force on the tail, and the nose pitching down. ✓
Loss of longitudinal stability and the nose pitching up at slow speeds. ✓
Excessive load factor in turns. ✓
55. The critical angle of attack on the wing polar diagram is marked as: (See LAPL/PPL 080-02)
1 ✓
6 ✓
4 ✓
5 ✓
56. Air pressure:
Increases with altitude. ✓
Acts only vertically downwards. ✓
Is measured in Pascals per square inch. ✓
Acts in all directions. ✓
57. That portion of the aircraft's total drag created by the production of lift is called:
Parasite drag, which is inversely proportional to the square of the airspeed. ✓
Induced drag, which is greatly affected by changes in coefficient of lift and airspeed. ✓
Induced drag, which is not affected by changes in airspeed. ✓
Parasite drag, which is greatly affected by changes in airspeed. ✓
58. VNE is
The maximum airspeed at which manoeuvres approaching the stall may be carried out. ✓
The maximum speed, above which flaps should not be extended. ✓
The airspeed which must not be exceeded except in a dive ✓
The maximum airspeed at which the aircraft may be flown. ✓
59. The unit of force is the:
Newton-metre. ✓
Mass-kilogram. ✓
Newton. ✓
Joule. ✓
60. An aircraft has a tendency to fly right wing low with hands off. It is trimmed with a tab the left aileron. The trim tab will:
Move down causing the left aileron to move up and right aileron to move down. ✓
Move up causing the left wing to move down, ailerons remain neutral. ✓
Move down, causing the left aileron to move up, right aileron remains neutral ✓
Move up, causing the left aileron to move up and right aileron to move down. ✓
61. Differential Ailerons' are a design feature that helps to counteract:
Adverse yaw. ✓
Adverse roll. ✓
Positive aircraft stability. ✓
Stability about the longitudinal axis. ✓
62. The angle of attack at which an aeroplane stalls:
Will be smaller flying downwind than when flying upwind. ✓
Will remain constant, regardless of gross weight. ✓
Is a function of speed and density altitude. ✓
Is dependent upon the speed of the airflow over the wing. ✓
63. Density:
Reduces with temperature reduction. ✓
Increases with altitude increase. ✓
Reduces with altitude increase. ✓
Is unaffected by temperature change. ✓
64. The presence of water vapour:
In the atmosphere will increase the amount of lift generated by an aircraft. ✓
In air will increase its density ✓
In the atmosphere will increase the power output of a piston engine. ✓
In air will reduce its density. ✓
65. The air pressure that acts on anything immersed in it:
Is greater at altitude than at sea level. ✓
Is also known as Total Pressure ✓
Is also known as Dynamic Pressure. ✓
Is also known as Static Pressure. ✓
66. Lowering the flaps during a landing approach:
Permits approaches at a higher indicated airspeed ✓
Decreases the angle of descent without increasing power. ✓
Increases the angle of descent without increasing the airspeed. ✓
Eliminates floating. ✓
67. A wing which is inclined downwards from root to tip is said to have:
Sweep. ✓
Anhedral ✓
Washout. ✓
Taper. ✓
68. As airspeed increases induced drag ____, parasite drag ____ and total drag ____.
Decreases / Increases / Decreases then increases. ✓
Increases / Decreases / Increases then decreases. ✓
Increases / Increases / Increases. ✓
Decreases / Decreases / Decreases. ✓
69. When an aircraft is disturbed from its trimmed attitude by, for example, turbulence, it is said to have neutral stability if it subsequently:
Oscillates about its original attitude before settling back to that original attitude. ✓
Remains in the new attitude. ✓
Immediately re-establishes its original attitude. ✓
Continues to move in the disturbed direction until the displacement is resisted by opposing control forces. ✓
70. If the angle of attack is increased above the stalling angle:
Lift and drag will both decrease. ✓
Lift will decrease and drag will increase. ✓
Lift and drag will both increase. ✓
Lift will increase and drag will decrease. ✓
71. Which of the answer options most correctly completes the sentence? The amount of lift a wing produces is directly proportional to:
The square root of the velocity of the air flowing over it ✓
The air temperature ✓
The dynamic pressure minus the static pressure. ✓
The air density ✓
72. The maximum value of the coefficient of lift is found at an angle of attack of approximately:
0 degrees. ✓
16 degrees ✓
Minus 4 degrees. ✓
4 to 6 degrees. ✓
73. When considering the changes in density of the air with altitude, which of the following four options is correct?
The temperature reduction with increasing altitude causes density to increase. ✓
The temperature increase with increasing altitude causes density to increase. ✓
The increase in pressure with increasing altitude causes density to reduce. ✓
The reduction in pressure with increasing altitude causes density to reduce. ✓
74. Following re-trimming for straight and level flight, in an aircraft with a C of G near its forward limit, and an elevator fitted with a conventional trim-tab:
Nose-down pitch authority will be reduced ✓
Tailplane down-load will be reduced ✓
Nose-up pitch authority will be reduced. ✓
Longitudinal stability will be reduced ✓
75. A moving mass of air possesses kinetic energy. An object placed in the path of such a moving mass of air will be subject to:
Static Pressure. ✓
Dynamic pressure. ✓
Static pressure and dynamic pressure. ✓
Dynamic pressure minus static pressure. ✓
76. Longitudinal stability is given:
The ailerons ✓
The wing dihedral ✓
The horizontal tailplane ✓
The fin. ✓
77. By design, the centre of pressure on a particular aircraft remains behind the aircraft's C of G. If the aircraft is longitudinally stable and is displaced in pitch, nose down, by turbulence:
Neither an upward nor a downward force will be generated by the tailplane, as the aircraft will already be in equilibrium. ✓
The tailplane will generate a downward force. ✓
The tailplane will generate an upward force. ✓
The aircraft will maintain its nose-down attitude. ✓
78. Which of the following four options describes the consequence of taking off with the manufacturer's recommended take-off flap setting selected?
A greater angle of climb. ✓
An increase in the length of the take-off run compared to a non-flap take-off. ✓
Easier avoidance of obstacles at the end of a runway. ✓
A decrease in the length of the take-off run compared to a non-flap take-off. ✓
79. With the flaps lowered, the stalling speed will:
Remain the same. ✓
Increase, but occur at a higher angle of attack. ✓
Increase. ✓
Decrease. ✓
80. In straight and level flight, the free stream airflow pressure, compared to that flowing under the wing, is:
Equal pressure but travelling faster. ✓
Equal. ✓
Lower. ✓
Higher. ✓
81. The air flow over the wing's upper surface in straight and level flight, when compared with the airflow that is unaffected by the wing, will have:
A reduced velocity. ✓
A higher velocity. ✓
A higher density. ✓
The same velocity. ✓
82. An aileron could be balanced aerodynamically by:
Attaching a weight to the control surface forward of the hinge. ✓
Making the up aileron move through a larger angle than the down aileron. ✓
Having the control hinge set back behind the control surface leading edge ✓
Having springs in the control circuit to assist movement. ✓
83. Full flaps should be selected when:
Committed to land. ✓
On go-around. ✓
Landing into a strong headwind. ✓
Commencing final approach. ✓
84. Dynamic pressure is:
The total pressure at a point where a moving airflow is brought completely to rest. ✓
The pressure change caused by heating when a moving airflow is brought completely to rest. ✓
The pressure due to the mass of air pressing down on the air beneath. ✓
The amount of the total pressure by which the static pressure rises at a point where a moving airflow is brought completely to rest. ✓
85. A positively cambered aerofoil starts to produce lift at an angle of attack of approximately:
0 degrees. ✓
Minus 4 degrees. ✓
4 to 6 degrees. ✓
16 degrees. ✓
86. Approximately for what percent will the stall speed increase if wing loading increases by 15%?
7% ✓
0% ✓
20% ✓
15% ✓
87. On an aerofoil section, the force of lift acts perpendicular to, and the force of drag acts parallel to, the:
Flightpath. ✓
Aerofoil section upper surface ✓
Chord line ✓
Longitudinal axis. ✓
88. An aircraft wing is constructed with positive dihedral in order to give:
Longitudinal stability about the lateral axis. ✓
Lateral stability about the longitudinal axis. ✓
Directional stability about the normal axis. ✓
Lateral stability about the normal axis ✓
89. What is the maximum allowed bank angle when flying an aircraft with limiting load factor of +2,5 G? (See LAPL/PPL 080-01)
66° ✓
60° ✓
55° ✓
50° ✓
90. With a forward centre of gravity, an aircraft will have:
Decreased elevator effectiveness when flaring. ✓
Shorter take off distances. ✓
Lighter forces for control movements. ✓
Reduced longitudinal stability ✓
91. If the Angle of Attack is increased beyond the Critical Angle of Attack, the wing will stall:
In which case, the control column should be pulled-back immediately. ✓
Regardless of airspeed or pitch attitude. ✓
Unless the pitch attitude is on or below the natural horizon. ✓
Unless the airspeed is greater than the normal stall speed. ✓
92. The maximum value of the coefficient of lift is found:
At the stalling angle of attack. ✓
At negative angles of attack. ✓
When lift equals drag. ✓
During steep turns. ✓
93. A typical stalling angle of attack for an aircraft wing is:
16° ✓
4° ✓
30° ✓
45° ✓
94. The airspeed at which a pilot will not yet overstress the airframe of an aircraft by momentarily up-deflecting the elevator is:
VS ✓
VA ✓
VFE ✓
VB ✓
95. Fixed trim tabs on ailerons:
Should never be adjusted. ✓
Can be adjusted on the ground after a test flight to make turning easier. ✓
Can be adjusted on the ground after a test flight to make wings-level flight easier. ✓
Can be adjusted during flight. ✓
96. Ailerons give:
Longitudinal control about the lateral axis. ✓
Directional control about the normal axis ✓
Lateral control about the longitudinal axis ✓
Lateral control about the lateral axis. ✓
97. The purpose of a spring-bias trim system is
To increase the feel in the control system. ✓
To compensate for temperature changes in cable tension. ✓
To reduce to zero the effort required by the pilot to counter stick force, after making a control movement. ✓
To maintain a constant tension in the trim tab system. ✓
98. Stability around the normal axis:
Is greater if the wing has no sweepback. ✓
Is given by the lateral dihedral. ✓
Depends on the longitudinal dihedral. ✓
Is increased if the keel surface behind the C of G is increased. ✓
99. On an aircraft with a simple trim tab incorporated into a control surface, when the surface is moved, the tab remains in the same position relative to the:
Aircraft horizontal plane. ✓
Control surface. ✓
Relative airflow. ✓
Boundary layer airflow. ✓
100. An imaginary straight line running from the midpoint of the leading edge of an aerofoil to its trailing edge, is called the:
Chord ✓
Maximum camber. ✓
Aerofoil thickness ✓
Mean camber. ✓
101. The dynamic pressure exerted on an aircraft's frontal surface is equal to:
Half the density times the indicated airspeed squared. ✓
Half the density times the true airspeed squared. ✓
Half the true airspeed times the density squared. ✓
Density time's speed squared. ✓
102. When the control column is pushed forward, a balance tab on the elevator:
Moves to the neutral position. ✓
Will only move if the trim wheel is operated. ✓
Will move up relative to the control surface. ✓
Will move down relative to the control surface. ✓
103. If an aircraft is flown at its design manoeuvring speed VA:
It is only possible to subject the aircraft to a load greater than its limit load during violent increases in incidence, i.e. when using excessive stick force to pull-out of a dive. ✓
It is not possible to exceed the positive limit load with movements. ✓
It is possible to subject the aircraft to a load greater than its limit load during high 'g' manoeuvres. ✓
It must be immediately slowed down if turbulence is encountered. ✓
104. If the aircraft weight is increased, without change of C of G position, the stalling angle attack will:
Decrease. ✓
Remain the same. The position of the C of G does not affect the stall speed. ✓
Remain the same. ✓
Increase. ✓
105. The angle of attack is the angle between the:
Chord line and the horizontal plane. ✓
Chord line and the relative airflow. ✓
Camber line and free stream flow. ✓
Chord line and the longitudinal axis of the aeroplane ✓
106. The reason for washout being designed into an aircraft wing is to:
Cause the inboard section of the wing to stall first. ✓
Cause the outboard section of the wing to stall first. ✓
Decrease the effectiveness of the ailerons. ✓
Increase the effectiveness of the flaps. ✓
107. In a climb at a steady speed, the thrust is:
Less than the aerodynamic drag. ✓
Equal to the weight component along the flight path. ✓
Greater than the aerodynamic drag. ✓
Equal to the aerodynamic drag. ✓
108. Controls are mass balanced in order to:
Return the control surface to neutral when the controls are released. ✓
Provide equal control forces on all three controls ✓
Eliminate control flutter ✓
Aerodynamically assist the pilot in moving the controls. ✓
109. The maximum gliding distance from 6.000 feet, for an aircraft in clean configuration, with a lift/drag ratio of 8:1, is approximately 8 nautical miles. If flaps are deployed:
Lift/Drag ratio will be unaffected but will be achieved at a lower airspeed. ✓
The maximum gliding distance will increase. ✓
The maximum gliding distance will be unaffected. ✓
The maximum gliding distance will be less. ✓
110. What must be the relationship between the forces acting on an aircraft in flight, for that aircraft to be in a state of equilibrium?
Lift must equal drag, and thrust must equal weight. ✓
Lift must equal weight, and thrust must equal drag. ✓
Lift must equal thrust plus drag. ✓
Lift must equal thrust, and weight must equal drag. ✓
111. The part that gives most of the directional stability for an aircraft is:
The horizontal tailplane. ✓
The vertical fin. ✓
The rudder trim tab ✓
The rudder ✓
112. If an airplane weights 3.000 pounds, what approximate weight would the airplane structure be required to support during a 20° banked turn while maintaining altitude? (See LAPL/PPL 080-01)
3.180 lbs. ✓
4.000 lbs. ✓
3.350 lbs. ✓
3.000 lbs. ✓
113. The smooth flow of air, where each molecule follows the path of the preceding molecule, is a definition of:
Wind ✓
Laminar flow ✓
Turbulent flow ✓
Free stream flow ✓
114. The primary and secondary effects of applying the left rudder alone are
Right yaw and left roll. ✓
Left yaw and right roll ✓
Right yaw and right roll ✓
Left yaw and left roll. ✓
115. The angle of attack for a minimum drag on the wing polar diagram is marked as: (See LAPL/PPL 080-02)
4 ✓
7 ✓
5 ✓
3 ✓
116. The maximum allowable airspeed with flaps extended (VFE) is lower than cruising speed because:
Flaps will stall if they are deployed at too high an airspeed. ✓
At speeds higher than VFE the aerodynamic forces would overload the flap and wing structures. ✓
Too much drag is induced. ✓
Flaps are used only when preparing to land. ✓
117. The phenomenon of flutter is described as:
Oscillatory motion of part or parts of the aircraft relative to the remainder of the structure. ✓
Reversal of the ailerons caused by wing torsional flexibility. ✓
Rapid oscillatory motion involving only rotation of the control surfaces, associated with the shock waves produced around the control surfaces. ✓
Rapid movement of the airframe caused by vibration from the engines. ✓
118. In straight and level powered flight the following principal forces act on an aircraft:
Thrust, lift, drag, weight. ✓
Thrust, lift, drag. ✓
Thrust, lift, weight. ✓
Lift, drag, weight ✓
119. When considering air: 1. Air has mass. 2. Air is not compressible. 3. Air is able to flow or change its shape when subject to even small pressures. 4. The viscosity of air is very high. 5. Moving air has kinetic energy.
1 and 4. ✓
1, 2, 3 and 5. ✓
1, 3 and 5. ✓
2, 3 and 4. ✓
120. Relative airflow is ____ and ____ the movement of the aircraft.
Perpendicular to / Opposite to. ✓
Parallel to / Opposite to ✓
Parallel to / in the same direction as. ✓
Perpendicular to / in the same direction as. ✓
121. If an airplane weights 4.600 pounds, what approximate weight would the airplane structure be required to support during a 50° banked turn while maintaining altitude? (See LAPL/PPL 080-01)
5.400 lbs ✓
9.200 lbs. ✓
7.160 lbs ✓
8.180 lbs ✓
122. If the centre of gravity (C of G) of an aircraft is found to be within limits for take-off:
The C of G limits for landing must be checked, allowing for planned fuel consumption. ✓
The C of G will not change during the flight. ✓
The flight crew will always be certain of being able to adjust the C of G during flight in order to keep it within acceptable limits for landing. ✓
The C of G will always be within limits for landing. ✓
123. Dynamic pressure equals:
Total pressure minus static pressure ✓
Total pressure divided by static pressure. ✓
Static pressure minus total pressure. ✓
Total pressure plus static pressure. ✓
124. What is the maximum allowed bank angle when flying an aircraft with limiting load factor of +3,8 G? (See LAPL/PPL 080-01)
67° ✓
70° ✓
75° ✓
53° ✓
125. An aft centre of gravity will give:
Increased longitudinal stability ✓
Increased elevator effectiveness when flaring. ✓
Longer take-off distances. ✓
Heavy forces for control movements. ✓
126. When flaps are lowered the stalling angle of attack of the wing
Decreases, but CLMAX increases. ✓
Decreases, but CLMAX remains the same. ✓
Remains the same, but CLMAX increases. ✓
Increases and CLMAX increases ✓
127. When the C of G is close to the forward limit:
Very small forces are required on the control column to produce pitch. ✓
Very high stick forces are required to pitch because the aircraft is very stable. ✓
Stick forces are the same as for an aft C of G. ✓
Longitudinal stability is reduced. ✓
128. The purpose of an anti-balance tab is to:
Trim the aircraft. ✓
Ensure that the pilot's physical control load increases with increase of control surface deflection. ✓
Reduce the load required to move the controls at all speeds ✓
Reduce the load required to move the controls at high speeds only. ✓
129. The maximum angle of climb of an aeroplane is determined by:
Excess airspeed. ✓
Wind speed. ✓
The aircraft weight. ✓
Excess engine thrust. ✓
130. A control surface may have a mass balance fitted to it, in order to:
Help prevent a rapid and uncontrolled oscillation which is called "flutter". ✓
Provide the pilot with "feel". ✓
Keep the control surface level. ✓
Lighten the forces needed to control the surface. ✓
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