I had the opportunity to witness one of QR's A350's land at GVA recently and the low level of the noise on final approach was amazing.
Will the NEO/MAX have as good noise suppression characteristics compared to the A350?
Faro
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- StereoTechque
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Re: A350 vs NEO/MAX Noise Suppression
Engine noise is caused due the shearing effect caused by high velocity of the gases exiting the engine. Modern turbofans however derive thrust more from the bypass duct rather than the core. NEO/MAX engines are using bypass ratios upto 12:1. So definitely the noise emitted is less compared to older engines
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- precure787
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Re: A350 vs NEO/MAX Noise Suppression
The NEO/MAX would be quieter than the A350, given the bypass ratio.
Re: A350 vs NEO/MAX Noise Suppression
StereoTechque wrote:Engine noise is....
...not the major noise source during the landing he observed.
Gruß, masi1157
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- StereoTechque
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Re: A350 vs NEO/MAX Noise Suppression
masi1157 wrote:StereoTechque wrote:Engine noise is....
...not the major noise source during the landing he observed.
Gruß, masi1157
I didn't notice he said during landing.
But definitely it reduces noise by a small margin. During approach the major noise sources are Apu and deployed devices (L/G, flaps, slats).Re: A350 vs NEO/MAX Noise Suppression
StereoTechque wrote:masi1157 wrote:StereoTechque wrote:Engine noise is....
...not the major noise source during the landing he observed.
Gruß, masi1157
I didn't notice he said during landing. :) But definitely it reduces noise by a small margin. During approach the major noise sources are Apu and deployed devices (L/G, flaps, slats).
On most A320s the loudest percieved noise for much of the approach is actually a resonance from air passing over the fuel vents.
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- StereoTechque
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Re: A350 vs NEO/MAX Noise Suppression
M564038 wrote:On most A320s the loudest percieved noise for much of the approach is actually a resonance from air passing over the fuel vents.
They have reduced the noise by adding a vortex generator just forward of the fuel vent on newer built frames including the NEO.
Link
http://www.euractiv.com/section/transpo ... aft-noise/Re: A350 vs NEO/MAX Noise Suppression
StereoTechque wrote:M564038 wrote:On most A320s the loudest percieved noise for much of the approach is actually a resonance from air passing over the fuel vents.
They have reduced the noise by adding a vortex generator just forward of the fuel vent on newer built frames including the NEO.
Link :arrow: http://www.euractiv.com/section/transpo ... aft-noise/
Yes. That is why I wrote "most" for simplification.
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