rotary wing
Học thuậtThân thiện
Definition
Noun: A rotary wing is the long, airfoil-shaped blade or set of blades that rotates around a central mast to generate the aerodynamic lift required to support a helicopter in flight. It is the primary lifting and propulsion system of a helicopter, distinct from the fixed wings of an airplane.
Usage
The term "rotary wing" refers specifically to the entire rotating lift-producing assembly of a helicopter. It is a technical term used in aviation and engineering contexts. - It is often used interchangeably with "main rotor" or "rotor system," though "rotary wing" emphasizes its function as a rotating airfoil. - It is a singular noun but can refer to a system comprising multiple blades.
Examples
- The helicopter's rotary wing began to spin faster as it prepared for takeoff.
- Engineers conducted stress tests on the new composite materials for the rotary wing.
- A key advantage of a rotary wing is its ability to provide vertical lift and hover.
Advanced Usage
- "rotary-wing aircraft": A class of aircraft that uses rotary wings for lift, such as helicopters and autogyros. This is a compound term where "rotary-wing" acts as an adjective.
- The military employs various types of rotary-wing aircraft for transport and reconnaissance.
Variants and Related Words
- Rotor (noun): A general term for a rotating part. In aviation, it often refers to the rotary wing system or the tail rotor.
- Main Rotor (noun): The primary rotary wing that provides lift and propulsion for a helicopter.
- Rotor Blade (noun): An individual blade that is part of the rotary wing assembly.
- Rotorcraft (noun): An aircraft that gains lift from one or more rotary wings.
Synonyms
- Main rotor
- Rotor system
Antonyms
- Fixed wing: A rigid, non-rotating airfoil used on conventional airplanes for lift.
Noun
- the long airfoil that rotates to provide the lift that supports a helicopter in the air