Theory Of Flight

Question 0

What axis is wingtip to wingtip

Answer 0

Lateral

Question 1

Where is the longitudinal axis?

Answer 1

Nose to rudder

Question 2

What is the vertical/normal axis

Answer 2

Passes through centre of gravity

Question 3

What do ailerons control?

Answer 3

Roll.

Question 4

When one aileron goes up, what happens to the other?

Answer 4

It goes down

Question 5

What do elevators control?

Answer 5

Pitch

Question 6

What control system acts similarly to the elevators, but consists of a single horizontal moving surface?

Answer 6

Stabilator

Question 7

What controls Yaw?

Answer 7

Rudder.

Question 8

What axis is roll around?

Answer 8

The longitudinal axis

Question 9

What movement is associated with the normal axis

Answer 9

Yaw

Question 10

What does a trim tab do?

Answer 10

Helps pilot maintain a constant altitude.

Question 11

Where is the trim tab located?

Answer 11

The trailing edge of a control surface

Question 12

What do spoilers do to lift and drag?

Answer 12

Reduce lift

Increase drag

Question 13

What do dive brakes do?

Answer 13

Increase drag

Question 14

What is flutter

Answer 14

Vibrations produced at high speeds

Question 15

What is an aircraft?

Answer 15

Any machine capable of producing lift

Question 16

What is an airplane

Answer 16

Power driven aircraft producing it’s lift through fixed wings during flight

Question 17

What is a glider?

Answer 17

A non powered aircraft producing it’s lift from fixed wings (low aspect ratio)

Question 18

What is an airframe?

Answer 18

Total structure of the body of an airplane

Question 19

What is the fuselage?

Answer 19

Central body of an airplane to accommodate crew passengers etc

Question 20

What is a monoplane?

Answer 20

One set of wings

Question 21

What is a biplane?

Answer 21

Airplane with two sets of wings

Question 22

What is leading edge?

Answer 22

Foreword edge if wing where airflow passes

Question 23

What is the trailing edge?

Answer 23

Rear edge of the wing

Question 24

What is wing root?

Answer 24

Where the wing attaches to the fuselage?

Question 25

What is wingtip?

Answer 25

The furthest edge of the wing from the fuselage

Question 26

What are spars?

Answer 26

Beams supporting wings from root to wingtip

Question 27

What is the fin/vertical stabilizer?

Answer 27

A vertical surface at the end of the fuselage to provide stability

Question 28

Define lift.

Answer 28

Force allowing the aircraft to be suspended in air

Question 29

Give 3 examples of things lift depends on.

Answer 29

``` Angle of attack Aerodynamic profile Surface area of wing True airspeed Density of air ```

Question 30

List the two types of drag

Answer 30

Parasite | Induced

Question 31

Define parasite drag

Answer 31

Drag caused by all parts of the aircraft that do not produce life No aerodynamic components

Question 32

Define drag

Answer 32

Resistance to motion through air

Question 33

Define induced drag

Answer 33

Caused by parts of the aircraft that produce lift. | Ex. Turbulent layer over wing

Question 34

Define angle of attack

Answer 34

Angle between chord line and relative airflow

Question 35

Define chord

Answer 35

Imaginary line joining leading and trailing edge of wing

Question 36

Define angle of incidence

Answer 36

Angle between chord and longitudinal axis. Constructed into the aircraft

Question 37

As angle of attack increases, what happens to lift?

Answer 37

It increases

Question 38

Name 2 ways to increase life

Answer 38

Increase angle of attack | Increase speed

Question 39

What is a stall

Answer 39

When the wings can no longer produce sufficient lift

Question 40

Name 3 symptoms of approaching a stall

Answer 40

``` Loss of horizon Reduced wind noise Dropping of indicated airspeed Slack controls Buffering ```

Question 41

Name 3 factors of a stall

Answer 41

``` Weight Centre of gravity Turbulence Turns Flaps Climatic condition ```

Question 42

How does a glider keep lift?

Answer 42

By keeping the nose slightly down

Question 43

What is equilibrium?

Answer 43

When thrust and drag are equal

Question 44

Where is the spar located in a conventional airfoil?

Answer 44

25%

Question 45

What happens to lift and drag in a conventional airfoil?

Answer 45

Increased lift and drag?

Question 46

What kind of aircraft does a conventional airfoil suit better?

Answer 46

Slow aircraft

Question 47

Where is the thickest part of a laminar airfoil located?

Answer 47

50%

Question 48

What happens to lift and drag with a laminar airfoil?

Answer 48

Both decease

Question 49

What kind of aircraft are better suited for a laminar airfoil?

Answer 49

High speed aircraft

Question 50

What is relative airflow?

Answer 50

Air flowing opposite, | But parallel to the direction of travel

Question 51

What is camber?

Answer 51

The curve of a wing

Question 52

What is span?

Answer 52

The maximum distance between wingtips

Question 53

What is aspect ratio?

Answer 53

Ration between length of wingspan and chord.

Question 54

What kinds of aircraft are high aspect ratio used on?

Answer 54

Gliders. Produces more lift and less drag

Question 55

What kind of aircraft use low aspect ratio?

Answer 55

High speed aircraft

Question 56

What is the laminar layer?

Answer 56

Smith air flowing over wing

Question 57

What is turbulent layer?

Answer 57

Air that becomes turbulent over the wing.

Question 58

What is the transition point?

Answer 58

Where the laminar layer becomes turbulent

Question 59

What is the separation point?

Answer 59

Where the turbulent layer separates from the wing creating a vacuum

Question 60

What is the effect of angle of attack on laminar airflow?

Answer 60

As angle of attack increases, transition point moves forward