Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

AIRFRAME > AC FLIGHT CONTROLS > Flashcards

AC FLIGHT CONTROLS Flashcards

1
Q

control the forces of flight and the aircraft’s
direction and attitude

A

flight control systems

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

2 Subdivided of flight control systems

A

primary flight controls
secondary flight controls

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

basic rotation controls : 3 AXES

A

Longitudinal axis
Lateral axis
Vertical axis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Longitudinal Axis

A

controlled by the AILERONS

ROLLING

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

yoke to the left, right wing??

A

UP

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

yoke to the right, left wing??

A

DOWN

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Lateral Axis

A

controlled by elevators

PITCHING

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

PUSHING the yoke, airplane’s nose goes??

A

UP

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

PULLING the yoke, airplane’s nose goes??

A

DOWN

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Vertical Axis

A

controlled by the rudder

YAWING

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

3 Aircraft Flight Control System Design

A

Mechanically
Hydraulically
Electrically

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

The control surfaces
are connected directly to the cockpit
controls by a system of cables, rods,
levers and chains.

A

Mechanically

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

The control surfaces
are moved by hydraulic power.

A

Hydraulically

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Movement of the cockpit
control sends an electrical signal to
the control surface

A

Electrically

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

2 parts hydro-mechanical flight control system

A

mechanical circuit
hydraulic circuit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

The circuit which links
the cockpit controls with the
hydraulic circuits.

A

mechanical circuit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

The circuit which has
hydraulic pumps, reservoirs, filters,
pipes, valves and actuators.

A

hydraulic circuit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

It use computers to process the flight control
inputs made by the pilot or autopilot, and
send corresponding electrical signals to the
flight control surface actuators.

A

Fly-By-Wire (FBW)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Airbus strategy

A

hard limits

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Boeing strategy

A

soft limits

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

3 Terms stability and control

A

stability
maneuverability
controllability

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

It is the ability of an aircraft to correct
for conditions that act on it, like turbulence
or flight control inputs.

A

Stability

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

It is the characteristic
of an aircraft to be directed along a desired
flightpath and to withstand the stresses
imposed.

A

Maneuverability

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

It is the quality of the
response of an aircraft to the pilot’s
commands while maneuvering the aircraft.

A

Controllability

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

2 Flight Control Stability

A

Static Stability
Dynamic Stability

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

3 kinds of static stability

A

positive static stability
neutral static stability
negative static stability

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

It exists when the
disturbed object tends to return to
equilibrium

A

Positive static stability

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

It exists when the
disturbed object has neither tendency, but
remains in equilibrium in the direction of
disturbance.

A

Neutral static stability

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

It exists when the disturbed object
tends to continue in the direction of
disturbance

A

Negative static stability, or Static Instability

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

if you hit turbulence and your
nose pitches up, and then immediately
continues pitching up

A

Negative static stability, or Static Instability

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

if you hit turbulence and your nose pitches up 5
degrees, and then immediately after that it
stays at 5 degrees nose up,

A

Neutral static stability

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

you hit some turbulence, and the
nose pitches up. Immediately after that
happens, the nose lowers and returns to its
original attitude.

A

Positive static stability

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

It is the initial tendency of an
aircraft to return to its original position when
it’s disturbed.

A

Static stability

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

It is how an airplane
responds over time to a disturbance.

A

Dynamic stability

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

3 kinds of dynamic stability

A

positive dynamic stability
neutral dynamic stability
negative dynamic stability

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

Oscillations decrease in amplitude with time

A

positive dynamic stability

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

Oscillations are constant in amplitude with
time

A

Neutral Dynamic Stability

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
38
Q

Oscillations increase in amplitude with time

A

Negative Dynamic Stability

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
39
Q

It is the quality that
makes an aircraft stable about its
lateral axis.

A

Longitudinal stability

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
40
Q

It involves the pitching motion as the
aircraft’s nose moves up and down in
flight.

A

Longitudinal stability

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
41
Q

It has tendency to dive or climb progressively
into a very steep dive or climb, or even a
stall and sometimes dangerous to fly.

A

longitudinally unstable aircraft

42
Q

3 factors of Static longitudinal stability, or
instability

A
  1. Location of the wing with respect to the CG
  2. Location of the horizontal tail surfaces with respect to the CG
  3. Area or size of the tail surfaces
43
Q

Most aircraft are designed so that the
wing’s CL (center of lift) is to the ____________________.

A

rear of the CG

44
Q

aircraft’s speed decreases

A

the speed of the airflow over the wing is
decreased

45
Q

As the aircraft continues in the nose low attitude and its speed increases,

A

the downward force on the horizontal
stabilizer is once again increased.

46
Q

LOW SPEED

A

PITCH UP

LESSER DOWNWARD TAIL LOAD

47
Q

HIGH SPEED

A

PITCH DOWN

GREATER DOWNWARD TAIL LOAD

48
Q

Stability about the aircraft’s
longitudinal axis, which extends from
the nose of the aircraft to its tail.

A

lateral stability

49
Q

Stability around the longitudinal axis

A

lateral stability

50
Q

4 main design factors
that make an aircraft laterally stable

A

dihedral
sweepback
keel effect
weight distribution

51
Q

It is the upward angle of an aircraft’s
wings with the wing tip higher than
the wing root.

A

Dihedral

52
Q

Down going wing = greater angle of
attack = increased lift

A

Down going wing = greater angle of
attack = increased lift

53
Q

When disturbed, weight of the aircraft
acts like a pendulum, weight under
the wings, to swing aircraft back into
position

A

Keel Effect

54
Q

When one wing is dropped, the
lowered wing produces more lift than
the raised wing and the original
position is restored

A

Sweepback

55
Q

Stability around the vertical or normal
axis

A

Directional Stability

56
Q

Known as yaw stability

A

Directional Stability

57
Q

3 Aerodynamic Forces in Flight Maneuvers

A

Forces in Turns
Forces in Climb
Forces in Descents

58
Q

all of your lift is acting vertically, and
no lift is acting horizontally

A

Forces in Turns

59
Q

an object at rest
or moving in a straight line remains at
res

A

Newton’s First Law of Motion, the Law
of Inertia

60
Q

If you roll into a turn using only
ailerons, your vertical lift decreases
and your horizontal lift increases.

A

If you roll into a turn using only
ailerons, your Vertical lift DECREASES
and your Horizontal lift INCREASES.

61
Q

As apply back pressure, it actually
raising the nose and getting a higher
angle of attack during a turn.

A

As apply back pressure, it actually
RAISING the nose and getting a HIGHER
angle of attack during a turn.

62
Q

As increase the wing’s angle-of-attack with back pressure, it starts approaching the airplane’s
critical angle-of-attack and risk entering an accelerated stall.

A

As increase the wing’s angle-of-attack with back pressure, it starts approaching the airplane’s
critical angle-of-attack and risk entering an accelerated stall.

63
Q

After the flightpath is stabilized on the
upward incline, the angle of attack
and lift again revert to about the level
flight values.

A

Forces in Climb

64
Q

If the climb is entered with no change
in power setting, the airspeed
gradually diminishes

A

If the climb is ENTERED WITH NO CHANGE
in power setting, the AIRSPEED GRADUALLY DIMINISHES.

65
Q

The total drag is greater than the power, and the
airspeed decreases.

A

The total drag is GREATER THAN the power, and the airspeed DECREASES.

66
Q

To descend at the same airspeed as
used in straight-and-level flight, the
power must be reduced as the
descent is entered.

A

Forces of Descents

67
Q

They are carefully
designed to provide adequate
responsiveness to control inputs while
allowing a natural feel.

A

Aircraft control systems

68
Q

The controls usually feel soft and sluggish, and
the aircraft responds slowly to control
applications.

A

At low airspeeds

69
Q

The controls become increasingly firm and
aircraft response is more rapid.

A

At higher airspeeds

70
Q

The ailerons are attached
to the __________________ of each wing.

A

outboard trailing edge

71
Q

Moving the control wheel, or control
stick, to the right causes the right aileron to
deflect upward and the left aileron to
deflect downward.

A

Moving the control wheel, or control
stick, to the RIGHT causes the RIGHT AILERON to
DEFLECT UPWARD and the LEFT AILERON to
DEFLECT DOWNWARD.

72
Q

upward deflection of the right
aileron = decreases the camber =
decreased lift on the right wing

A

upward deflection of the right
aileron = decreases the camber =
decreased lift on the right wing

73
Q

downward deflection of the left
aileron = increases the camber =
increased lift on the right wing

A

downward deflection of the left
aileron = increases the camber =
increased lift on the right wing

74
Q

produces more drag and becomes more
pronounced at low airspeeds.

A

Adverse Yaw

75
Q

the increase in aileron
deflection causes an increase in adverse
yaw.

A

the increase in aileron
deflection causes an increase in adverse
yaw.

76
Q

3 Ailerons Designed to Counteract Adverse
Yaw

A
  1. Differential ailerons
  2. Frise-type ailerons
  3. Coupled ailerons and rudder
77
Q

It is a type of empennage where
the tail plane (horizontal stabilizer) is
mounted to the top of the fin.

A

T-tail

78
Q

they are extremely
sensitive to control inputs and aerodynamic
loads

A

stabilators pivot

79
Q

4 Secondary Flight Control Surfaces

A

Flaps
Leading Devices
Spoilers
Trim Systems

80
Q

It help your wing adapt to your
current phase of flight.

A

Flaps

81
Q

It hinge to the back of the wing,
and they pivot down when you extend
them.

MOST SIMPLE FLAPS

A

Plain flaps

82
Q

It is deflected from the
lower surface of the airfoil and produces a
slightly greater increase in lift than the plain
flap.

A

Split flap

83
Q

most popular flap on aircraft today

A

Slotted flap

84
Q

This flap design not only changes the
camber of the wing, it also increases the
wing area. Instead of rotating down on a
hinge, it slides backwards on tracks.

A

Fowler Flaps

85
Q

High-lift devices also can be applied
to the leading edge of the airfoil.

A

Leading Edge Devices

86
Q

It is a portion of the leading edge
that moves down and forward when it is
deployed, opening a slot behind it and
increasing the camber of the leading edge.

A

Slat

87
Q

It is a adjustable opening
between either the leading edge of an
aileron and the rest of a wing or the leading
edge of a wing and a cap fitting over it.

A

Slot

88
Q

4 Types of Leading Edge Devices

A

Fixed Slots
Leading Edge Cuffs
Movable Slats
Leading Edge Flaps

89
Q

It direct airflow to the upper
wing surface and delay airflow separation
at higher angles of attack.

A

Fixed slots

90
Q

As the AOA increases, the high pressure area moves aft below the lower
surface of the wing, allowing the slats to
move forward.

A

Movable Slats

91
Q

This type of leading edge device is frequently used in
conjunction with trailing edge flaps and
can reduce the nose-down pitching
movement produced by the latter.

A

Leading Edge Flaps

92
Q

It extends the leading
edge down and forward.

A

Leading Edge Cuffs

93
Q

It deployed from the wings to spoil the smooth
airflow, reducing lift and increasing drag.

A

SPOILERS

94
Q

They are used to relieve
the pilot of the need to maintain constant
pressure on the flight controls.

A

Trim systems

95
Q

The most common installation on
small aircraft that is attached to
the trailing edge of the elevator.

A

single trim tab

96
Q

ELEVATOR UP = TRIM TAB DOWN = NOSE UP TRIM

A

ELEVATOR DOWN = TRIM TAB UP = NOSE DOWN TRIM

97
Q

Those are attached to the control surface
linkage, so when the control surface is
moved in one direction, it
moves in the opposite direction.

A

Balance Tabs

98
Q

It is a small
portion of a flight control surface that
deploys in such a way that it helps to move
the entire flight control surface in the
direction that the pilot wishes it to go

A

Servo Tab

99
Q

they move in the same direction as the trailing
edge of the stabilator.

A

Anti-Servo Tabs

100
Q

It functions as a trim device to relieve control
pressure and maintain the stabilator in the
desired position.

A

Anti-Servo Tabs

101
Q

It linkages pivot the horizontal stabilizer about its rear spar.

A

Adjustable Stabilizer

102
Q

This tab is bent in one direction or the
other while on the ground to apply a trim
force to the rudder.

A

Ground Adjustable Tabs

AIRFRAME (6 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions