The 787 is on average up to 7 dB quieter on departure than the 767, and up to 8 dB quieter than the A330 aircraft. The results also confirm that the 787 is up to 3 dB quieter on arrival than the aircraft types it is intended to replace.
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2 Boeing 787 DreamlinerThe 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.
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.
The loudest aircraft still in commercial service in any significant numbers is the Boeing 727. The 727 is banned from most major airports due to its noise levels. Among aircraft permitted worldwide, the Boeing 747–400 is noticeably louder than other widebody aircraft such as 777, A380 and A350.
It has been reported that the A350 is quieter than the B787, primarily due to the automatic Noise Abatement Departure Procedure (NADP) for the optimization of the engine thrust and flight path to reduce noise and the fuel-efficient engine. The other giant airplane, A380, is also known to have a quiet cabin.
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.
Current 787 deliveries have been mostly suspended over the last year because of quality control programs involving microscopic tolerances of fasteners joining fuselage barrels together, and additional issues with electrical systems and windscreens.
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.
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).
The noise is caused by a hydraulic pump which is situated directly below the cabin. It mostly runs on takeoff and landing, but it can also run automatically at other times. Dogs have been reported to need psychiatric treatment after being transported on a 787.
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.
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.
The seats are so cramped in economy that the legroom of a similar seat on a 777 or a 747 feels like a business-class seat. Intelligent engineering allows for seat-backs to recline but to compensate, the seat bottom lunges forward — thereby only providing an illusion of a recline.
The longer the 787s remained on the ground, the more it would cost to get them to fly again, due to the maintenance work required. As a result, they were no longer airworthy.
This high aspect ratio wing design combined with efficiency enhancing raked wing tips allow the 787 to be one of the fastest commercial aircraft (Mach 0.85 cruise speed) while consuming less fuel than today's comparably sized aircraft.
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.
Passenger countIn terms of capacity, it is abundantly clear that the A380 can carry significantly more passengers than any 787 variant. With 525 passengers in a standard, three-class configuration, the A380 has a sizeable advantage over the Boeing 787-10, which seats 323 passengers across three classes.
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.
There are several alternatives for getting for blocking out sound. Earplugs are a good way to block-out unwanted noise, they're small and inexpensive. If you like soothing music, make sure you pack your earbuds and phone/iPod. Noise-canceling headphones are a great investment for quiet on board too.
Early Boeing 707s were extremely noisy, as was the Boeing 747-200, but the one aircraft that got a bad rap for its noisy takeoffs and landings was the Boeing 727. This was an issue because the aircraft was designed to operate from short runways, primarily in densely populated cities.