SACAA PPL (H) Aircraft Technical Practice Questions - SACAA Private Pilot Licence (Helicopter) Aircraft Technical & General Knowledge Examination Exam - SACAA PPL (H) Aircraft Technical Practice Questions - SACAA Private Pilot Licence (Helicopter) Aircraft Technical & General Knowledge Examination Exam

Question 1

In a semi-rigid teetering rotor hub design, how are flapping movements of the main rotor blades accommodated during flight?

Each blade flaps independently around its own individual flapping hinge pin The entire rotor head teeters as a single unit around a central trunnion and teeter hinge pin Flapping motion is absorbed entirely through flexible composite elastomeric drag hinges Flapping movements are eliminated by rigid titanium root fittings

Correct Answer:

The entire rotor head teeters as a single unit around a central trunnion and teeter hinge pin

Question 2

Which set of mechanical hinges is present on each blade root of a conventional fully articulated rotor hub?

Teeter hinge and pitch change bearings only Flapping hinge, drag (lead-lag) hinge, and feathering (pitch change) axis Drag hinge and fixed teeter pin only Elastomeric flexure beam and pitch lock pin

Correct Answer:

Flapping hinge, drag (lead-lag) hinge, and feathering (pitch change) axis

Question 3

What structural feature enables a rigid rotor system to allow blade flapping and feathering without traditional mechanical hinge pins?

High-pressure hydraulic actuators mounted directly inside the rotor mast Flexible composite blade roots and elastomeric bearings that absorb bending and torsional loads Floating swashplate rings connected directly to the rotor hub casing Counter-rotating upper and lower rotor blade retention pins

Correct Answer:

Flexible composite blade roots and elastomeric bearings that absorb bending and torsional loads

Question 4

Why are hydraulic or mechanical drag dampers installed on the drag hinges of a fully articulated main rotor hub?

To prevent the blades from teetering into the tail boom during low RPM shutdown To control and damp lead-lag oscillations caused by Coriolis effect, preventing ground resonance To lock the blade pitch angle during high-speed autorotative descents To balance aerodynamic lift between advancing and retreating blades in forward flight

Correct Answer:

To control and damp lead-lag oscillations caused by Coriolis effect, preventing ground resonance

Question 5

How does a swashplate assembly convert non-rotating pilot flight control inputs into rotating main rotor pitch changes?

By tilting and sliding a non-rotating inner ring that transfers movement through a bearing to a rotating outer ring By varying the electrical current sent to individual rotor blade root servo motors By altering the hydraulic pressure inside the main transmission reduction gear casing By shifting the physical center of gravity of the rotor mast via counterweights

Correct Answer:

By tilting and sliding a non-rotating inner ring that transfers movement through a bearing to a rotating outer ring

Exam overview

About this Exam

Prepare with the SACAA PPL (H) Aircraft Technical Practice Questions - SACAA Private Pilot Licence (Helicopter) Aircraft Technical & General Knowledge Examination Exam practice quiz. This question bank includes 100 questions covering rotor, helicopter, main, engine, and blade. 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) Aircraft Technical Practice Questions - SACAA Private Pilot Licence (Helicopter) Aircraft Technical & General Knowledge Examination Exam

This practice set contains 100 questions from the matching question bank and focuses on rotor, helicopter, main, engine, and blade. 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) Aircraft Technical Practice Questions - SACAA Private Pilot Licence (Helicopter) Aircraft Technical & General Knowledge Examination Exam

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