4 ms·

"65 dB(A) during fly-over and below 70 dB(A) during landing." So like a vacuum cleaner, yikes!

by mzs 5y ago

cyberge99 5y ago
Yes, except it will be on top of a building (most likely) and fly hundreds of feet above. Lawnmowers are significantly louder.
burkaman 5y ago
I think a helicopter is a better comparison here, and they seem to be 80-100 dBA.
- datameta 5y ago
  I often see (without hearing) helicopters in the downtown brooklyn area. If this aircraft flies above ~600 feet, noise should be little to no concern.
  - PhantomGremlin 5y ago
    You need to live in a quieter area. Too much noise pollution in NYC. In a suburb of Portland Oregon I routinely hear helicopters up to about 2000 feet. I hear many planes at over 5000 ft. When jets take off from PDX and climb over my house I can easily hear them at about 16,000 feet. https://globe.adsbexchange.com https://globe.adsbexchange.com
    - LargoLasskhyfv 5y ago
      Depending on the weather I hear aircrafts at 32,000 to 40,000 ft. Trough closed windows (double paned isolating stuff) at night. Mostly traffic from/to Paris, France and from/to Asia, which goes over here.
    - datameta 5y ago
      There will be a difference between a hovering helicopter and one travelling at cruising speed. I assume you experience more of the latter while I the former.
blunte 5y ago
If you live anywhere where people love Harleys and Dodge Ram trucks with aftermarket exhausts, then 65 is luxury levels of quietness. Also, whether in my small village or in a fancy suburb, there seems to always be someone with a 2 cycle, muffler-free piece of lawn equipment running. Leaf blowers are the worst, but weed trimmers and now even leaf vaccuums are common. Or, if you live in an urban area, especially in NYC, there's rarely a moment that you don't hear an emergency vehicle siren echoing throughout the neighborhood. Unfortunately, it's just a noisy world. At least this aircraft is electric and has some goal of keeping noise as low as possible.
morsch 5y ago
They don't say how/where they measured, so the figures are basically worthless. 65-70 dB(A) seems on the low end of consumer unmanned quadcopters[1], e.g. "Maximum sound pressure level for fast flyover at 15 m height: 62 dB(A)" for a DJI Phantom 2 weighing less than 2kg. If they managed to get into that range for a vehicle that must weigh many hundreds of times more, I guess that'd be very impressive. [1] https://www.mdpi.com/1660-4601/18/11/5940 https://www.mdpi.com/1660-4601/18/11/5940
KuiN 5y ago
Significantly quieter than car traffic noise. Struggling to see the issue here.
- jazzyjackson 5y ago
  i’m struggling to see how it’s physically possible. the most vapory of vaporware.

"65 dB(A) during fly-over and below 70 dB(A) during landing." So like a vacuum cleaner, yikes!

by mzs 5y ago

"65 dB(A) during fly-over and below 70 dB(A) during landing." So like a vacuum cleaner, yikes!

Yes, except it will be on top of a building (most likely) and fly hundreds of feet above. Lawnmowers are significantly louder.

burkaman 5y ago

I think a helicopter is a better comparison here, and they seem to be 80-100 dBA.

datameta 5y ago
I often see (without hearing) helicopters in the downtown brooklyn area. If this aircraft flies above ~600 feet, noise should be little to no concern.
- PhantomGremlin 5y ago
  You need to live in a quieter area. Too much noise pollution in NYC. In a suburb of Portland Oregon I routinely hear helicopters up to about 2000 feet. I hear many planes at over 5000 ft. When jets take off from PDX and climb over my house I can easily hear them at about 16,000 feet. https://globe.adsbexchange.com https://globe.adsbexchange.com
  - LargoLasskhyfv 5y ago
    Depending on the weather I hear aircrafts at 32,000 to 40,000 ft. Trough closed windows (double paned isolating stuff) at night. Mostly traffic from/to Paris, France and from/to Asia, which goes over here.
  - datameta 5y ago
    There will be a difference between a hovering helicopter and one travelling at cruising speed. I assume you experience more of the latter while I the former.

blunte 5y ago

If you live anywhere where people love Harleys and Dodge Ram trucks with aftermarket exhausts, then 65 is luxury levels of quietness. Also, whether in my small village or in a fancy suburb, there seems to always be someone with a 2 cycle, muffler-free piece of lawn equipment running. Leaf blowers are the worst, but weed trimmers and now even leaf vaccuums are common. Or, if you live in an urban area, especially in NYC, there's rarely a moment that you don't hear an emergency vehicle siren echoing throughout the neighborhood. Unfortunately, it's just a noisy world. At least this aircraft is electric and has some goal of keeping noise as low as possible.

morsch 5y ago

They don't say how/where they measured, so the figures are basically worthless. 65-70 dB(A) seems on the low end of consumer unmanned quadcopters[1], e.g. "Maximum sound pressure level for fast flyover at 15 m height: 62 dB(A)" for a DJI Phantom 2 weighing less than 2kg. If they managed to get into that range for a vehicle that must weigh many hundreds of times more, I guess that'd be very impressive. [1] https://www.mdpi.com/1660-4601/18/11/5940 https://www.mdpi.com/1660-4601/18/11/5940

KuiN 5y ago

Significantly quieter than car traffic noise. Struggling to see the issue here.

jazzyjackson 5y ago
i’m struggling to see how it’s physically possible. the most vapory of vaporware.