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Airbus reveals the next generation of CityAirbus

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11–20 of 68 posts

Re: Airbus reveals the next generation of CityAirbus

#11
post #2

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

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.

Re: Airbus reveals the next generation of CityAirbus

#12
post #8

As much as I want to live in a world with the Jetsons, what's the business case here? Presumably it's going to have to launch vertically from the top of buildings, which means that you can go from skyscraper landing pad to skyscraper landing pad. How many taxi users are trying to travel within a financial district? I imagine much more commonly they're trying to go from high-density to low-density (like FiDi to West V…

Could make sense in some major cities in China, and maybe a handful of other places.

Re: Airbus reveals the next generation of CityAirbus

#13
post #2

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

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

Re: Airbus reveals the next generation of CityAirbus

#14
There is a business use case here in NYC. NYC to the Hamptons or out east long Island. The locals in the Hamptons are complaining about noise pollution from helicopters making trips to the Hamptons from NYC. If this makes little or no noise the current helicopter service companies will use them and people will pay $800 ( off-peak) - $2,500 ( peak) one way trip from the west side of manhattan / Chelsea area to east Hampton / Montauk . If you got the money that is :-)

Re: Airbus reveals the next generation of CityAirbus

#15
post #8

As much as I want to live in a world with the Jetsons, what's the business case here? Presumably it's going to have to launch vertically from the top of buildings, which means that you can go from skyscraper landing pad to skyscraper landing pad. How many taxi users are trying to travel within a financial district? I imagine much more commonly they're trying to go from high-density to low-density (like FiDi to West V…

The best case I've heard is helping to reduce traffic to places that expect a large influx of folks at the same time.

Concerts, for example - if you have a lot of these flying taxis, you can have people park in auxiliary lots that are 20 minutes away by car, then get shuttled over via air taxi. Depending on how many taxis and how fast the turnaround is, you could eliminate a non-negligible amount of traffic into/out of parking lots. Same with sporting events, etc.

And then on a similar note, airports - I believe something like this was proposed for LAX. In the same way that people park at off-site parking lots and take shuttle buses, they could park off-site and take air taxis.

These scenarios work relatively well because they put the air taxis in nonstop use for some period of time, and they have the space/infrastructure to set up spaces for them to land and load/unload folks.

Re: Airbus reveals the next generation of CityAirbus

#16
post #6
post #2

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

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

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.

Re: Airbus reveals the next generation of CityAirbus

#17
The VTOL concept for air taxis is silly; this is just a 3d rendering for a press release, and battery energy density just isn't there yet for them to be useful.

But electric flight is without a doubt going to revolutionize commuter airlines. With an electric powertrain, you get rid of the vast majority of costs associated with flying which are the intensive maintenance and overhaul schedules required for turboprop/turbofan engines. You can then economically fly small traditional aircraft with electric powertrains carrying ~10 passengers up to 250 miles at 200mph with current battery tech, and takeoff/land from tiny municipal airports with no need for TSA. At that point flying becomes like hopping on a bus, and just as cheap. Living within 250 miles of a metro area and commuting every day will be a nonissue. Something like the Eviation Alice [0] is far more likely to be the future than any of these VTOL concepts.

[0] https://www.eviation.co/

Re: Airbus reveals the next generation of CityAirbus

#19
post #8

As much as I want to live in a world with the Jetsons, what's the business case here? Presumably it's going to have to launch vertically from the top of buildings, which means that you can go from skyscraper landing pad to skyscraper landing pad. How many taxi users are trying to travel within a financial district? I imagine much more commonly they're trying to go from high-density to low-density (like FiDi to West V…

There was a regular helicopter service on top of skyscrapers, like a bus. There isn't anymore, because things that go up, must come down.

"Urban" and "flying" will never happen.

I'm regularly astonished that we trust people with shopping carts, given how well they use them. Nobody is going to trust any density flying over our heads. Not even with auto pilot. Sorry Fifth Element fans.

Re: Airbus reveals the next generation of CityAirbus

#20
I’m really surprised by the noise levels. They say 65db flyover and 70db landing which is quieter than just about every (personal) drone [1].

I wonder how they’re getting those numbers. Like at what distance are they measuring from?

I find it hard to believe they’re able to make a flying vehicle quieter than a drone 1/100th of its size.

Edited for clarity

[1]: https://www.airbornedrones.co/drone-noise-levels/

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