AIRCRAFT NOISE Meaning and
Definition
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Aircraft noise refers to the audible sound waves generated by aircraft during takeoff, landing, and flying operations. It is a specific type of environmental noise that often occurs near airports or flight paths. The noise produced by aircraft can vary in intensity, frequency, duration, and tonal characteristics, depending on factors such as aircraft type, engine design, speed, altitude, and distance from the observer.
Aircraft noise is a complex mixture of different sound frequencies, ranging from low-frequency rumbles to high-frequency whines. It is primarily caused by the propulsion systems, including jet engines and propellers, which produce vibrations and turbulent airflows during flight. These vibrations create pressure fluctuations in the air, propagating as sound waves that reach the human ear.
The impact of aircraft noise on individuals and communities can be significant. Prolonged exposure to high levels of aircraft noise may lead to various negative effects, including annoyance, sleep disturbances, stress, impaired cognitive performance, and potential health issues. These impacts can affect the overall quality of life for those residing or working in close proximity to airports or under frequently used flight paths.
Efforts to mitigate aircraft noise are directed towards reducing the noise at its source through technological advancements, such as quieter engines, improved aerodynamics, and better insulation. Additionally, flight procedures and regulations are implemented to minimize aircraft noise by optimizing flight paths, implementing noise abatement procedures during takeoff and landing, and imposing restrictions on operational hours. These measures aim to strike a balance between the societal benefits of aviation and the negative impacts of aircraft noise on communities.
Etymology of AIRCRAFT NOISE
The word "aircraft noise" is a compound term made up of two individual words: "aircraft" and "noise".
The term "aircraft" originated in the early 20th century, derived from the combination of "air" and "craft". "Air" refers to the Earth's atmosphere, while "craft" refers to a vehicle or device designed for transportation or work. Therefore, "aircraft" specifically refers to any vehicle or machine that can travel through the air, such as airplanes, helicopters, or balloons.
The word "noise" has a broader etymology. It comes from the Middle English word "noyse", which originated from the Old French word "noise", meaning "uproar, brawl, or dispute". The Old French word, in turn, can be traced back to the Latin word "nausea", meaning "disgust" or "nausea".
