Question 1
In forward flight, the advancing blade of a single main rotor travels faster through the air than the retreating blade, producing unequal lift across the rotor disc. What is this phenomenon called?
Correct Answer:
Dissymmetry of lift
Question 2
A helicopter is established in a high descent rate at low forward airspeed with power applied, and the pilot reports rising sink rate, increasing vibration and reduced cyclic authority. The rotor is descending into its own downwash. Which condition is this?
Correct Answer:
Vortex ring state
Question 3
When a cyclic input is applied to a rotating rotor disc, the maximum displacement of the disc occurs approximately 90 degrees later in the direction of rotation than the point of input. This characteristic is a result of:
Correct Answer:
Gyroscopic precession
Question 4
As an articulated rotor blade flaps upward, its centre of mass moves closer to the axis of rotation. To conserve angular momentum the blade tends to accelerate. What is this effect, which is accommodated by the lead-lag (drag) hinge?
Correct Answer:
Coriolis effect
Question 5
Retreating blade stall is the primary aerodynamic limitation that establishes which helicopter performance boundary?
Correct Answer:
Never-exceed forward speed (VNE)
Question 1
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About this Exam

Prepare with the Module 12 Practice Questions - EASA Part-66 Module 12 - Helicopter Aerodynamics, Structures and Systems Exam practice quiz. This question bank includes 100 questions covering helicopter, rotor, main, blade, and flight. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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Module 12 Practice Questions - EASA Part-66 Module 12 - Helicopter Aerodynamics, Structures and Systems Exam

This practice set contains 100 questions from the matching question bank and focuses on helicopter, rotor, main, blade, and flight. 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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