Question 327General Subjects - Assistant Engineer70% to pass
What type of propeller consists of a flat disc set flush with the under surface of the vessel's hull with a number of vertical, rudder like blades projecting from it?
AI Explanation
The correct answer is D) Cycloidal propeller.
A cycloidal propeller consists of a flat disc set flush with the underside of the vessel's hull, with a number of vertical, rudder-like blades projecting from it. This design allows the propeller to provide both thrust and steering, making it a unique type of propulsion system.
The other options are incorrect because:
A) Contra-rotating propellers use two sets of propeller blades rotating in opposite directions.
B) Tandem propellers use two separate propellers aligned one after the other.
C) Helicoidal propellers have blades arranged in a spiral or helix pattern.
Related Questions
#325 Which of the following propulsor types represents the proper terminology for a screw propeller of the conventional design? #326 Which of the following propulsor types does not require the use of a separate rudder for steerage? #328 Concerning the operating mechanism of a controllable-pitch propeller, what statement is true? #329 The gears used for virtually all marine propulsion reduction gear sets are of what type? #330 Which of the listed reduction gear sets has the input and output shafts in-line with one another?