Principles of Flight

Aircraft Motion

Flight Controls

Further Effects of the Flight Controls

Effects of Speed and Power

1 Quiz

Aircraft Motion Quiz

Physics of Aircraft

Units of Measurement

Pressure, Density and Airspeed

Bernoulli’s Principle and the Venturi

1 Quiz

Physics of Aircraft Quiz

Lift

Lift Terminology

Controlling Lift

The Lift Formula

1 Quiz

Drag

Lift/Drag Ratio

1 Quiz

Weight and Thrust

Aircraft Weight

Propeller Thrust

How Propellers Work

Propeller Effects

Thrust and Power

The Four Forces

1 Quiz

Weight and Thrust Quiz

Secondary Controls

1 Quiz

Secondary Controls Quiz

Stability

Aircraft Stability

Longitudinal Stability

1 Quiz

Straight and Level

Forces in Straight and Level Flight

Effect of Flap on Straight and Level Flight

1 Quiz

Straight and Level Quiz

Climbing

Forces in a Climb

Climb Angle vs Climb Rate

Factors Affecting the Climb

1 Quiz

Descending

Power Off Descent

Factors Affecting the Descent

Wind in a Descent

Power + Attitude = Performance

1 Quiz

Descending Quiz

Turning

Forces in a Turn

Load Factor in a Turn

Coordinated Turns

1 Quiz

Aircraft Design Features

Control Surface Balancing

1 Quiz

Aircraft Design Features Quiz

The Stall

What is a Stall?

CL and the Stall

Load Factor and Stalling

Flight Controls in a Stall

External Factors Affecting the Stall

1 Quiz

Practice Exam

Principles of Flight Exam

2 Quizzes

Principles of Flight Practice Questions

Principles of Flight Mock Exam

Physics of Aircraft Quiz

Principles of Flight Bernoulli’s Principle and the Venturi Physics of Aircraft Quiz

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Question 1 of 9

1. Question
Which of the below options has the correct definitions for:

(1) Altitude
(2) Height
(3) Elevation
- (1) Altitude is distance above mean sea level (2) Height is distance above ground level (3) Elevation is the distance a certain point is above mean sea level
- (1) Altitude is distance above ground level (2) Height is distance above mean sea level (3) Elevation is the distance a certain point is above mean sea level
- (1) Altitude is the distance a certain point is above mean sea level (2) Height is distance above mean sea level (3) Elevation is distance above ground level
- (1) Altitude is distance above mean sea level (2) Height is the distance a certain point is above mean sea level (3) Elevation is distance above ground level
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Question 2 of 9

2. Question
Which of the below statements about forces is correct?
- Any force can be resolved into two components at 90° to each other
- It is not possible to combine two forces into one resultant force
- All forces have a strength but not a direction
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Question 3 of 9

3. Question
Static pressure is:
- the force exerted by still air and it acts equally in all directions
- the additional force experienced by an object as a result of it colliding with the air molecules it is passing
- the combination of total pressure and dynamic pressure
- the pressure experienced by all forward facing parts of an aircraft in flight
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Question 4 of 9

4. Question
Dynamic pressure is:
- the additional force experienced by an object as a result of it colliding with the air molecules it is passing
- the force exerted by still air and it acts equally in all directions
- the combination of total pressure and static pressure
- the pressure experienced by all forward facing parts of an aircraft in flight
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Question 5 of 9

5. Question
Total pressure is:
- the pressure experienced by all forward facing parts of an aircraft in flight
- the additional force experienced by an object as a result of it colliding with the air molecules it is passing
- the force exerted by still air and it acts equally in all directions
- the difference between dynamic pressure and static pressure
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Question 6 of 9

6. Question
The airspeed indicator (ASI):
- has an input from the pitot tube (measuring total pressure) and the static port (measuring static pressure). The ASI subtracts the static pressure from the total pressure in order to measure dynamic pressure.
- has an input from the pitot tube (measuring dynamic pressure) and the static port (measuring static pressure). The ASI subtracts the static pressure from the dynamic pressure in order to measure total pressure.
- has an input from the dynamic port (measuring dynamic pressure) and the static port (measuring static pressure). The ASI combines the dynamic pressure and the static pressure in order to measure total pressure.
- has only one input from the pitot tube. The ASI measures the dynamic air pressure flowing into the pitot tube and displays this as indicated airspeed calibrated in knots.
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Question 7 of 9

7. Question
The airspeed indicator (ASI):
- is only accurate in standard conditions at sea level
- compensates for air density and so displays true airspeed (TAS)
- does not need to compensate for changes in air density because any such changes have the same effect on static and dynamic pressure and so the two cancel each other out
- is calibrated to display true airspeed (TAS)
Correct

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Question 8 of 9

8. Question
Air flowing through the constricted section of a Venturi tube:
- has increased velocity and decreased static pressure but total pressure remains constant
- has decreased velocity and increased static pressure but total pressure remains constant
- has increased velocity, decreased static pressure and decreased total pressure
- has increased velocity, decreased static pressure and increased total pressure
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Question 9 of 9

9. Question
Which of the following options best describes how static air pressure changes as air flows above and below an aircraft wing?
- Air flowing over both the top and the bottom of the wing is forced to accelerate, so both have reduced static pressure. The air flowing over the top of the wing accelerates more than the air flowing under the bottom of the wing. This leads to higher static pressure below the wing when compared to the top of the wing.
- Air flowing over both the top and the bottom of the wing is forced to accelerate, so both have reduced static pressure. The air flowing under the bottom of the wing accelerates more than the air flowing over the top of the wing. This leads to higher static pressure above the wing compared to the bottom of the wing.
- Air flowing over both the top and the bottom of the wing is forced to accelerate, so both have reduced static pressure. The air flowing over the top of the wing accelerates more than the air flowing under the bottom of the wing. This leads to higher static pressure above the wing when compared to the bottom of the wing.
- Only the air flowing over the top of the wing is forced to accelerate, so has a higher velocity. The higher velocity air above the wing leads to higher static pressure above the wing compared to the bottom of the wing.
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