SACAA PPL (H) Principles of Flight Practice Questions - SACAA Private Pilot Licence (Helicopter) Principles of Flight Examination Exam - SACAA PPL (H) Principles of Flight Practice Questions - SACAA Private Pilot Licence (Helicopter) Principles of Flight Examination Exam

Question 1

Which of the following correctly defines the difference between rotor blade pitch angle and Angle of Attack (AoA)?

Pitch angle is the angle between the blade chord line and the reference rotor hub plane, whereas Angle of Attack is the angle between the chord line and the resultant relative airflow. Pitch angle is measured between the chord line and the relative airflow, whereas Angle of Attack is fixed by the swashplate position. Pitch angle varies with relative wind velocity, while Angle of Attack is controlled strictly by the pilot's collective position. Pitch angle and Angle of Attack are identical under all flight conditions including hovering and autorotation.

Correct Answer:

Pitch angle is the angle between the blade chord line and the reference rotor hub plane, whereas Angle of Attack is the angle between the chord line and the resultant relative airflow.

Question 2

How does an increase in induced flow (downwash) through the main rotor disc affect the rotor blade's Angle of Attack (AoA) if mechanical pitch remains unchanged?

It increases the Angle of Attack by tilting the relative airflow upward. It decreases the Angle of Attack by tilting the resultant relative airflow downward. It has no effect on Angle of Attack because pitch angle is locked. It shifts the center of pressure forward without altering Angle of Attack.

Correct Answer:

It decreases the Angle of Attack by tilting the resultant relative airflow downward.

Question 3

Total Rotor Thrust (TRT) acts perpendicular to which aerodynamic reference plane?

The Shaft Axis The Tip Path Plane (TPP) The Horizon Plane The Fuselage Longitudinal Axis

Correct Answer:

The Tip Path Plane (TPP)

Question 4

What primary forces determine the equilibrium rotor coning angle during a steady hover?

Lift (Total Rotor Thrust) acting upward and Centrifugal Force acting outward. Gross weight acting downward and parasite drag acting backward. Tail rotor thrust acting sideways and main rotor torque acting circularly. Gyroscopic precession acting at 90 degrees and induced downwash acting downward.

Correct Answer:

Lift (Total Rotor Thrust) acting upward and Centrifugal Force acting outward.

Question 5

According to the principle of gyroscopic precession, when a force is applied to a rotating main rotor disc, where does the maximum physical displacement (response) occur?

At the exact point of force application. 45 degrees later in the direction of rotation. 90 degrees later in the direction of rotation. 180 degrees opposite to the point of force application.

Correct Answer:

90 degrees later in the direction of rotation.

Question 1

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Prepare with the SACAA PPL (H) Principles of Flight Practice Questions - SACAA Private Pilot Licence (Helicopter) Principles of Flight Examination Exam practice quiz. This question bank includes 100 questions covering rotor, blade, helicopter, main, and forward. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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SACAA PPL (H) Principles of Flight Practice Questions - SACAA Private Pilot Licence (Helicopter) Principles of Flight Examination Exam

This practice set contains 100 questions from the matching question bank and focuses on rotor, blade, helicopter, main, and forward. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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SACAA PPL (H) Principles of Flight Practice Questions - SACAA Private Pilot Licence (Helicopter) Principles of Flight Examination Exam

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