D. Glenn Arthur Jr. wrote:
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?
They are much, much louder. Airliners use a turbine engine to drive a big fan, which is what provides the energy to fly them. Military planes use "real" jets, where the thrust comes from the reaction of the exhaust. You gat more power ofr the size but use more fuel and make more noise.
mike
