propellor

Thân thiện

The pilot checks the airplane's propellor before takeoff.

Definition

Noun: 1. A mechanical device with blades that rotates to create thrust: A propellor is a device consisting of a central hub with radiating blades. When it rotates, it pushes against a fluid (like air or water) to propel a vehicle such as an aircraft or a ship forward.

Usage

The word "propellor" (also commonly spelled "propeller") is used to describe the specific rotating device that provides propulsion. * It is a countable noun (e.g., a propellor, two propellors). * It is typically modified by the type of vehicle or the fluid it acts upon (e.g., aircraft propellor, ship's propellor, marine propellor).

Examples

• The small airplane's propellor spun rapidly as it prepared for takeoff.
• Engineers inspected the boat's propellor for damage after it hit a submerged log.
• The design of the propellor is crucial for the efficiency of the engine.

Advanced Usage

• "Feathering the propellor": In aviation, this refers to adjusting the angle of the propellor blades to minimize drag when an engine has failed.
  • The pilot successfully feathered the propellor after the engine lost power.
• "Variable-pitch propellor": A propellor where the angle of the blades can be adjusted to improve efficiency under different conditions.
  • Modern aircraft often use variable-pitch propellors for better performance.

Variants and Related Words

• Propeller (n): The more common modern spelling of "propellor". Both spellings are correct and have the same meaning.
• Prop (n): A common informal shortening of "propellor", especially in aviation contexts (e.g., ).
• Rotor (n): A set of rotating blades, but typically refers to those on a helicopter that provide lift, not forward thrust like a propellor.
• Impeller (n): A rotor used to increase the pressure and flow of a fluid within a pump or similar machine, not primarily for propulsion.

Synonyms

• Screw (especially for marine applications; e.g., ).
• Aircrew (specifically for aircraft).
• Driver (a less common, more technical term).

Related Phrases

• Propellor shaft: The rotating shaft that transmits power from the engine to the propellor.
  • The mechanic replaced the worn bearings on the propellor shaft.
• Propellor blade: One of the individual radiating arms of the propellor.
  • A crack was found in one of the propellor blades.

Học thuật

Noun

1. a mechanical device that rotates to push against air or water

Từ đồng nghĩa

• propeller