horizontal stabilizer
Definition
Noun: * A fixed horizontal airfoil on an aircraft's tail: The "horizontal stabilizer" is the primary fixed, horizontal surface at the rear of an aircraft. Its main function is to provide longitudinal (pitch) stability, meaning it helps keep the aircraft's nose from pitching up or down uncontrollably. The movable control surface attached to its trailing edge is called the elevator.
Usage
The term is used specifically in aviation to describe a critical component of an aircraft's empennage (tail assembly). It is a technical term. * The engineers inspected the horizontal stabilizer for any damage after the flight. * Pitch stability is primarily provided by the horizontal stabilizer.
Advanced Usage
- "Horizontal tailplane": This is a synonymous term, more commonly used in British English.
- The design features a large horizontal tailplane for increased stability.
Variants and Related Words
- Stabilizer (AE) / Stabiliser (BE) (noun): A general term for any fixed surface or device that provides stability. The "horizontal stabilizer" is a specific type.
- Elevator (noun): The movable control surface hinged to the trailing edge of the horizontal stabilizer. The pilot uses the elevator to control the aircraft's pitch (nose-up/nose-down attitude).
- Empennage (noun): The entire tail assembly of an aircraft, which includes the horizontal stabilizer, the elevator, the vertical stabilizer, and the rudder.
- Vertical stabilizer (noun): The fixed vertical airfoil on an aircraft's tail to which the rudder is hinged; it provides directional (yaw) stability.
Synonyms
- Horizontal tailplane
- Tailplane (when context clearly indicates the horizontal surface)
- Fixed stabilizer (in the specific context of the horizontal surface)
Related Phrases/Concepts
- Pitch control: The system for controlling the aircraft's nose-up and nose-down attitude, involving the horizontal stabilizer and elevator.
- Longitudinal stability: The stability around the lateral axis (pitch), which the horizontal stabilizer is designed to provide.
Noun
-
the horizontal airfoil of an aircraft's tail assembly that is fixed and to which the elevator is hinged
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