3 ms·
As far as cars are concerned, above ~30km/h, the noise produced by air resistance is louder than the tire noise. Cars, however, are on the ground, i.e., surroun
by kleiba 9y ago
As far as cars are concerned, above ~30km/h, the noise produced by air resistance is louder than the tire noise. Cars, however, are on the ground, i.e., surrounded by massive sonic breakers (i.e., buildings). It should be quite difficult to have a large amount of flying vehicles without an enormous noise impact, unless they're flying very high.
- bitL 9y agoCould somebody please declassify those silent UFO engines? We need them for the environment! /s
- nightski 9y agoThis seems like an odd claim. I've watched quite a few gliders landing at an airport and you never really hear them. Is this really true?
- bitL 9y agoI've done glider pilot training and gliders are an aberration as they are built to be supremely aerodynamical. Yet, once you go high speed (>100km/h), they are noticeable and at 140km/h they sound like an approaching storm, so you definitely won't miss them nearby.