4 ms·
The amount of air you need to move to create the thrust is not silent at all. Whether it is all electric or gas turbine it's going to be noisy.
by yardie 8y ago
The amount of air you need to move to create the thrust is not silent at all. Whether it is all electric or gas turbine it's going to be noisy.
- alex_duf 8y agoSo far, noise level seems to be a repeating argument in favour of electric planes, so I suspect it's still much less noisy
- yardie 8y agoElectric is quieter than gas turbine. That I agree. But quiet enough to meet residential quiet time requirements is still up for debate. The quietest jackhammer in the world still can't run at night. Hopefully these planes are some sort of VTOL and can descend within the confines of the airport property and zone. Current planes line up over residential neighborhoods with the homes closest to the runway getting the worst of the noise.
- aurailious 8y agoIts like how about somewhere around 30 mph cars make more noise from going through the air than their engines.
- lorenzhs 8y agoTyre noise sounds like the more likely source of car noise, at least that's how I previously heard this statement being made.
- yardie 8y agoCars don't derive their propulsion by pushing air. Airboats are a closer comparison. They normally are powered by a V8 and are extremely loud. Not just from the unmuffled engine but also from the big ass fan that's attached to it.
- ordinaryradical 8y agoYes, however a large chunk of that is created by the flaps. If you have shape memory flaps, you can reduce noise by up to 40% on takeoff and landing. I know one company has already proven this technology on some Gulfstreams for qualification.