10 LP Principles Of Flight

Question 1

What is the primary source of lift

Answer 1

Pressure differential around an airfoil

Question 2

What is the result of Bernoulli’s principle

Answer 2

Lift

Question 3

What is a secondary source of lift

Answer 3

And upward force generated by air striking the underside of an airfoiland being deflected downwards

Question 4

What is generated when an upward force of airstrikes the underside of an airfoil

Answer 4

The secondary source of lift

Question 5

The primary source of lift on an airfoil is created by a differential in

Answer 5

Pressure

Question 6

The statement “ the internal pressure of a fluid decreases at the point where the speed of the fluid increases” is a part of

Answer 6

Bernoulli’s principle

Question 7

The direction of airflow produced by an object moving through the air

Answer 7

Relative wind

Question 8

The relative wind for an aircraft in-flight flows in a direction ______ with and ______ to the direction of flight

Answer 8

Parallel

Opposite

Question 9

What determines the direction of relative wind

Answer 9

Actual flight path of the aircraft

Question 10

What are The three principal airfoils that produce lift on an aircraft

Answer 10

Wing, horizontal tail surfaces, propeller

Question 11

What are the three parts of an airfoil

Answer 11

Leading edge, trailing edge, chord line

Question 12

And imaginary straight line drawn from the leading edge to the trailing edge of a cross-section of an airfoil

Answer 12

Chord line

Question 13

The acute angle formed between the cord line of an airfoil and the direction of the air striking the airfoil

Answer 13

Angle of attack

Question 14

The curvature of the airfoil from the leading-edge to the trailing edge

Answer 14

The camber

Question 15

The shape or form of a wing as viewed from above

Answer 15

Wing platform

Question 16

The four forces affecting flight

Answer 16

Lift weight thrust drag

Question 17

Upward force created by an airfoil when it is moved through the air

Answer 17

Lift

Question 18

Downward force which tends to draw all bodies vertically toward the center of the earth

Answer 18

Weight

Question 19

Man-made force that pulls or pushes the aircraft are there

Answer 19

Thrust

Question 20

Rear word acting force which resists the forward movement of that airplane through the air

Answer 20

Drag

Question 21

If Lift is greater than weight

Answer 21

Aircraft will climb

Question 22

If weight is greater than lift

Answer 22

The aircraft will descend

Question 23

More thrust =

Answer 23

More drag

Question 24

Three key properties of the atmosphere that affect air density and aircraft performance

Answer 24

Temperature, altitude, water vapor/humidity

Question 25

As altitude increases the temperature decreases on average

Answer 25

2°C every thousand feet until the air temperature reaches about 67° at 7 miles above earth

Question 26

Is cold air denser than warm air?

Answer 26

Yes

Question 27

A decrease temperature with height

Answer 27

Lapse rate

Question 28

What is the measurement of 29.92 in inches of _____

Answer 28

Inches of mercury

Question 29

Pressure ______ with height

Answer 29

Decreases

Question 30

Lower pressure results in

Answer 30

Less dense air

Question 31

The altitude in the standard atmosphere corresponding to a particular value of air density

Answer 31

Density altitude

Question 32

Higher density altitude indicates

Answer 32

Lower density air, thinner air

Question 33

A device for propelling an aircraft that when rotated, produces by its action on the air, a breast approximately perpendicular to its plane of a rotation

Answer 33

Propeller

Question 34

What are the three different types of propellers

Answer 34

Adjustable pitch, fixed pitch, controllable pitch

Question 35

What are the three axes of rotation on an aircraft

Answer 35

Longitudinal axis, role, lateral axis, pitch, vertical axis, yaw

Question 36

An imaginary straight line through the fuselage nose to tail

Answer 36

Longitudinal axis, roll

Question 37

A line through the wing from wingtip to wingtip

Answer 37

Lateral access, pitch

Question 38

A line through the center of gravity from top to bottom

Answer 38

Vertical axis, yaw

Question 39

What do these control Ailerons Elevator Rudder

Answer 39

Controls roll,- longitudinal moves as the units/controls pitch,- lateral controls yaw- vertical

Question 40

A hinge surface normally mounted on out board trailing edge of the wing

Answer 40

Ailerons

Question 41

The control you control the ______ and _____

Answer 41

Ailerons | Elevator

Question 42

A hinge surface normally located on the rear of a horizontal stabilizer

Answer 42

The elevator

Question 43

The aft of the vertical stabilizer

Answer 43

The rudder

Question 44

How is the rudder controlled

Answer 44

By the rudder pedals on the floor

Question 45

Small, adjustable, hinged surfaces on the trailing edge of the primary control surface

Answer 45

Trim tabs

Question 46

What is the purpose of trim tabs

Answer 46

To lessen the manual pressure on the controls

Question 47

Located in board on the wings trailing edge and are used to increase lift

Answer 47

Flaps

Question 48

The extension of flaps causes an increase in

Answer 48

Drag

Question 49

What does the cyclic and collective control

Answer 49

Cyclic equals tilt, collective equals pitch

Question 50

The state a flight where the main rotor system has been turned by the action of relative wind rather than engine power

Answer 50

Auto rotation

Question 51

When does a stall occur

Answer 51

15-20 degrees | The airfoil reaches a critical angle of attack

Question 52

Three primary causes of stalls

Answer 52

Insufficient airspeed, excessive violence flight maneuvers, severe wind shear

Question 53

Three types of icing

Answer 53

Structural Icing, Pito static system icing, carburetor Icing

Question 54

Changes the shape of the airfoil

Answer 54

Structural Icing

Question 55

What type of icing reduces the fuel/airflow to the engine

Answer 55

Carburetor Icing

Question 56

Name five aircraft system failures

Answer 56

``` Electrical, mechanical, hydraulic, engine, engine fire ```

Question 57

What type of failure? Some instruments, flaps on some aircraft, radios, navigation and transponder equipment, lights

Answer 57

Electrical failure

Question 58

What kind of failure? Landing gear, blown tire, wheel off, panel off, flight controls, windshield

Answer 58

Mechanical failure

Question 59

What kind of failure? Effects landing gear, flaps, brakes on some aircraft

Answer 59

Hydraulic failure

Question 60

What kind of failure? Engine driven vacuum system for instruments, hydraulic power, electrical power, pressurization, forced landing, loss of altitude

Answer 60

Engine failure

Question 61

What type of failure is usually controllable

Answer 61

Engine fire