Is Boeing 787 quiet?

2 Boeing 787 Dreamliner The Dreamliner's lightweight composite structure contributes to reduced noise levels, both inside and outside the aircraft. The use of advanced soundproofing materials and quieter engines keeps the cabin environment more tranquil for passengers.



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To combat the sound of jet-blast from the rear of the engine, Boeing, General Electric, and NASA developed serrated edges called chevrons for the back of the nacelle and the engine exhaust nozzle. The chevrons reduce jet blast noise by controlling the way the air mixes after passing through and around the engine.

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The noise level has decreased to around 90 decibels in Airbus A350, Boeing 787, Airbus A320neo and Boeing 737 MAX aircraft, which are the most modern passenger aircraft today.

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1 Airbus A380 The Airbus A380 is the largest commercial passenger aircraft in the world, as well as the quietest widebody airliner currently flying. The A380's double-deck design and advanced noise-cancellation technology make it one of the quietest airliners in the skies.

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The sound comes from the rotary hydraulic motor situated in the wheel well of the jet which turns the drive shaft for the flap drive screw jacks.

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The Boeing 787 Dreamliner has revolutionized flying for both passengers and pilots. Taking a leap into the future from its predecessors, the designers incorporated a number of new features that make the Dreamliner one of the most fuel efficient and comfortable aircraft in the skies.

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While both aircraft have much quieter cabins than their competitors, the A350 definitely feels a lot quieter than the 787, no matter which part of the plane you're sitting in. The A350 is in fact the quietest twin-engined aircraft in the skies. The only plane quieter is it's double-deckered older brother, the A380.

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Airbus claims the A350 is five decibels quieter than competing aircraft [the Boeing 787], and up to nine decibels quieter towards the front of the cabin. This means four times less noise. This, of course, is without Airbus actually releasing their data.

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Sitting in the front of the wing is like being behind a speaker. All of the sounds of the engine and the disturbed air are projected away from you... For a more peaceful ride, find a seat in the front of the cabin.

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This advanced fly-by-wire system also is the key to Smoother Ride Technology – unique to the 787 family -- which senses turbulence and adjusts control surfaces automatically to dampen its effects before it reaches the passengers.

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The Boeing 787 is known to be a more comfortable and efficient aircraft than the 747, especially for long-haul flights. There are objective differences between both planes. The 787 has newer engines, two fewer of them and more electrical (rather than hydraulic) systems, which means much less cabin noise.

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The website tinitustalk.com pulled research figures together for several widebody aircraft – with the A380 coming in lowest at 69.5 dB. The Boeing 787, for comparison, was quoted as 72.7 dB and the Airbus A350 at 74.9 dB.

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The 787 was the first major commercial aircraft to use carbon fiber composite components in the fuselage and wing construction. These make the aircraft lighter but still offer high strength. New, more efficient engines. The 787 is designed to take either the General Electric GEnx or the Rolls-Royce Trent 1000 engine.

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The Bottom Line: The Airbus A350-900 and Boeing 787-9 are very similar aircraft, suited for similar missions. As one would expect, the slightly larger A350-900 has a seat-mile cost advantage, while the 787-9 has an advantage in cost per block hour. These aircraft are competitive, and nearly tie in economic performance.

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To start the Boeing 777 vs 787 comparison, we must say that the 787 is a more fuel efficient aircraft than the 777 thanks to its use of composite wings and more aerodynamically efficient design.

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The A350 offers the ultimate passenger experience even on the longest of flights. Its innovative design delivers a true feeling of spaciousness, with wide seats, high ceilings and alluring ambient lighting.

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Besides skinny seats, slim lavatories and overstuffed overhead bins, here's another reason to loathe the back of the airplane: It's noisier than the front. The noise inside an airplane is a choice airlines and airplane manufacturers make.

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A particularly quiet cabin, more free space and privacy, lighting that adapts to your biorhythm - and a generous feeling of space that is unparalleled. On board the Boeing 787-9, you can expect a new, comfortable travel experience and many innovations that will make your flight even more relaxing in the future.

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2 Boeing 787 Dreamliner The Dreamliner's lightweight composite structure contributes to reduced noise levels, both inside and outside the aircraft. The use of advanced soundproofing materials and quieter engines keeps the cabin environment more tranquil for passengers.

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However, did the 787 truly fly supersonic relative to the air? The answer is no. The 787 is a widebody passenger aircraft capable of flying long distances at a cruise speed of 0.85 Mach (652 mph/1,050 kph).

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While passengers love the experience in the back, it's also a great place for the pilots to work. A number of features on the aircraft set it apart from other aircraft types. So, even when your working day can be 19 hours long, I'd much rather be doing it in a Dreamliner than any other type.

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The 787's latest problem mirrors production issues discovered over 2020 and 2021 that included improperly fitted shimming that led to paper-thin gaps between surfaces on the Dreamliner's fuselage.

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Smoother Ride Technology: Sensors on the 787 sense and dampen turbulence for a more comfortable ride and less motion sickness.

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