Aerodynamics

Aerodynamics

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Question 1 of 9

1. Question
What statement applies Bernoulli’s principle?
- For every action there is and equal and opposite reaction.
- An upward force is generated as the lower surface of an airfoil deflects air downward.
- Air pressure is lower on the upper surface of the airfoil as airflow over the top of the airfoil is traveling faster.
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Hint

Review FAA-H-8083-21B Helicopter Flying Handbook – Chapter 2 – Aerodynamics of Flight
Question 2 of 9

2. Question
The acute angle A is the angle of:
- incidence
- attack
- dihedral
Correct

Incorrect

Hint

Review FAA-H-8083-21B Helicopter Flying Handbook – Chapter 2 – Aerodynamics of Flight
Question 3 of 9

3. Question
The term “Angle of Attack” is defined as:
- the angle between the airfoil chord line and resultant relative wind.
- the angle of incidence in related to resultant relative wind.
- the blade angle used to provide maximum climb performance.
Correct

Incorrect

Hint

Review FAA-H-8083-21B Helicopter Flying Handbook – Chapter 2 – Aerodynamics of Flight
Question 4 of 9

4. Question
The angle between the airfoil chord line and resultant relative wind is the angle of:
- Attack
- Incidence
- Lift
Correct

Incorrect

Hint

Review FAA-H-8083-21B Helicopter Flying Handbook – Chapter 2 – Aerodynamics of Flight
Question 5 of 9

5. Question
The term “Angle of Attack” is defined as the angle between:
- the cord line of the airfoil and the relative wind.
- the cord line and the angle of incidence.
- the angle of incidence and the aircraft profile.
Correct

Incorrect

Hint

Review FAA-H-8083-21B Helicopter Flying Handbook – Chapter 2 – Aerodynamics of Flight
Question 6 of 9

6. Question
What are the four forces acting on an aircraft in flight?
- lift, weight, thrust, and drag.
- lift, gravity, weight, and thrust.
- left, thrust, weight, and gravity.
Correct

Incorrect

Hint

Review FAA-H-8083-21B Helicopter Flying Handbook – Chapter 2 – Aerodynamics of Flight
Question 7 of 9

7. Question
What is the relationship of lift, weight, thrust and drag when the aircraft is in straight and level flight?
- Lift, drag, and weight equal thrust.
- Lift and weight equal thrust and drag.
- Lift equals weight and thrust equals drag.
Correct

Incorrect

Hint

Review FAA-H-8083-21B Helicopter Flying Handbook – Chapter 2 – Aerodynamics of Flight
Question 8 of 9

8. Question
When are the four forces that act on an aircraft in flight in equilibrium?
- During unaccelerated flight.
- When accelerating.
- When decelerating.
Correct

Incorrect

Hint

Review FAA-H-8083-21B Helicopter Flying Handbook – Chapter 2 – Aerodynamics of Flight
Question 9 of 9

9. Question
What are the four flight fundamentals involved in maneuvering an aircraft?
- Straight-and-level, turns, climbs, and descents.
- Turns, climbs, lift, and drag.
- Accelerating, climbing, descending, and turning.
Correct

Incorrect

Hint

Review FAA-H-8083-21B Helicopter Flying Handbook – Chapter 9 – Basic Flight Maneuvers

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