single-rotor helicopter
Noun: A type of helicopter that uses one main rotor to provide lift and a tail rotor to counteract torque and provide directional control. This is the most common helicopter configuration.
The term is used to describe and classify helicopters based on their mechanical design, specifically their rotor system. It distinguishes this common design from other configurations like tandem-rotor or coaxial-rotor helicopters.
- The single-rotor helicopter is the classic design seen in most news and medical evacuation reports.
- For his first solo flight, the student pilot trained in a standard single-rotor helicopter.
- The design simplicity of the single-rotor helicopter made it the dominant model for decades.
- The term is often used in technical, engineering, and aviation contexts for precise classification.
- It can be used descriptively even when "helicopter" alone would suffice, to emphasize the mechanical configuration being discussed.
- Helicopter (n): The general term for a type of aircraft that derives both lift and propulsion from horizontally rotating rotors.
- Tail rotor (n): The smaller, vertical rotor at the tail of a single-rotor helicopter, essential for counteracting torque.
- Main rotor (n): The large horizontal rotor system that provides lift for a helicopter.
- Tandem-rotor helicopter (n): A helicopter with two large main rotors mounted one in front of the other.
- Coaxial-rotor helicopter (n): A helicopter with two main rotors mounted on the same axis, one above the other, rotating in opposite directions.
- Conventional helicopter
- Monocopter (rare, technical)
The term is purely descriptive of a mechanical configuration. It does not describe the helicopter's size, purpose, or capacity. Both small personal helicopters and large transport helicopters can be of the single-rotor design. The defining feature is the use of one primary lifting rotor, necessitating a tail rotor or other anti-torque system.
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a helicopter having a single rotor
