D. Glenn Arthur Jr. mused: > > Jostein wrote: > > IIRC, the altitude where jumbo jet pollution happens offsets the > > efficiency. The same amount of exhausts do a lot more damage up there. > > Which reminds me ... Are fighters actually much louder than > jetliners, or is it just that when they pass over my house > they do so at a much lower altitude than jetliners do?
The former. Military aircraft don't have to meet noise pollution specifications, and also use inherently noisier engine designs (because the important metric is raw power, not fuel efficiency). Mind you, Concorde (when it was flying) was noisier than most of the military aircraft in service today.
