Try 3 free questions from the EASA Part-66 Module 17 — Propeller exam. Covers propeller fundamentals, construction, pitch control, synchronising, and de-icing.
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Question 1 of 3 — Section 17.1
Mechanical vibration emanating from the propeller would have a frequency that was
Explanation: The propeller rotates much slower than the power turbine, so its vibration frequency is correspondingly lower.
Question 2 of 3 — Section 17.2
Counterweights are fitted to blade root to
Explanation: Counterweights are positioned to generate a centrifugal turning moment (CTM) that opposes the aerodynamic turning moment (ATM) which tends to fine the blade.
Question 3 of 3 — Section 17.3
Which of the following would cause a decrease in pitch?
Explanation: Climbing increases aerodynamic load on the propeller causing underspeed. The governor responds by decreasing pitch to restore RPM to the set value.
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