Why are planes not loud anymore?

Modern jet engines are quieter than engines from a generation ago. Most newer engines, especially those used in commercial airliners, are high-bypass turbofans. This means that the first-stage compressor fan blows a lot of air around the turbine, compared to the amount of air that goes through it.



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In 1990, federal law required large jet airplanes to comply with stage 3 noise standards by 1999, leading to a phase-out of the noisiest airplanes (stage 1 and 2 airplanes). Later, federal law required smaller airplanes to comply with stage 3 standards by 2016.

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At night, it's not that we can't hear the sound of an airplane since the sound coming from it could still reach the ground but instead this noise is not that loud. Airplanes are advised to fly higher during nighttime to minimize the noise pollution it causes. So the sound intensity could go lesser as it reaches you.

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Pilots see only darkness around them except for lights if visibility is good. At night or even during day commercial planes navigate by using onboard instruments from immediately after takeoff till landing. They are not supposed to navigate based on visual cues.

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Departures tend to be louder than arrivals since the pilot is using more power to the engine to achieve lift.

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Newer planes, such as the Boeing 777 and Airbus A380 are objectively much quieter than the older, roaring 747s. So the average noise of each separate event (an airplane flying over your head) is getting quieter.

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Many people are afraid of flying in airplanes, but they shouldn't be. Flying is actually one of the safest ways to travel. In fact, when measured per mile, flying is actually ?far?safer than driving, or travelling by train. Not only is flying the safest ?mode of transport?, but it is also the fastest.

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While the average age of a U.S. domestic commercial airliner is 11 years old, it is not uncommon for aircraft to still be in service at 24, 25, even 30 years old.

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Aircraft must fly over residential areas because of the small distances between some airports and neighborhoods. Therefore, it is sometimes necessary for aircraft to fly over these residential areas in order for aircraft to safely reach the airports.

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This is because moist air is actually less dense than dry air (water vapor weighs less than air, which is why clouds float). Stormy, rainy days allow loud sounds to travel further, which can create louder days when reverse flow wind conditions force arriving San Francisco traffic to fly low over the East Bay.

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An altitude of 500 feet above the surface, except over open water or sparsely populated areas. In those cases, the aircraft may not be operated closer than 500 feet to any person, vessel, vehicle, or structure.

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Generally speaking, flying at higher altitudes means higher airspeed because of less drag. Of course, the type of aircraft you are flying will come into play as you work with flying at different altitudes, as will the amount of weight you are carrying. But realities of aerodynamics and physics remain the same.

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Many airlines provide crew rest areas on their aircraft, where pilots can sleep during long-haul flights. These areas are usually located in the tail, cargo area or above the cabin of the plane and are designed to be as quiet and comfortable as possible. Other crew members prefer to use business class seats to rest.

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Pilots don't earn a flat annual salary like some professions. Instead, they're paid an hourly wage for each flight hour flown, along with per diem. Most airlines guarantee a minimum number of hours per month, so that pilots can count on at least a minimum amount of monthly income.

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1. Bartini Beriev VVA 14. Picture a bizarre-looking mashup of an airplane, submarine, and marine components, and you will begin to understand how the Bartini Beriev VVA 14 arrived at its strange appearance.

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The North American X-15 may be the fastest plane in the world, with speeds at 4,520 mph and Mach 5.93. It's an experimental aircraft used and powered by NASA and USAF.

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