ebonheart_2
Well-Known Member
Hi everyone
Would any of you be aware of what research is being done to quiet down aircraft? Things that would relate to GA aircraft that is; not jet engines or anything. All I've found are these two sites about tuning exhaust. Would any of you know, first hand, how effective this can be... as well as adding HPs? I've also read something about trying to make the airframes produce less noise but cant find it.
http://www.piteraq.dk/flight/exhaust.html
http://www.amtonline.com/publication/article.jsp?pubId=1&id=1502
How effective would angling the exhaust back, and/or up be? Besides the fact that angling it up (or back and up at a 45º) would put it in the faces of most pilots... unless they were flying a rear-engined plane.... It would haved to be better than just straight down like most aircraft right (talking about for people on the ground at the moment)?
and I havnt ever flown a glider so I dont really know how noisy airframes are... but I guess it would add up pritty quick on a 747 or something.
Thanks
Would any of you be aware of what research is being done to quiet down aircraft? Things that would relate to GA aircraft that is; not jet engines or anything. All I've found are these two sites about tuning exhaust. Would any of you know, first hand, how effective this can be... as well as adding HPs? I've also read something about trying to make the airframes produce less noise but cant find it.
http://www.piteraq.dk/flight/exhaust.html
http://www.amtonline.com/publication/article.jsp?pubId=1&id=1502
How effective would angling the exhaust back, and/or up be? Besides the fact that angling it up (or back and up at a 45º) would put it in the faces of most pilots... unless they were flying a rear-engined plane.... It would haved to be better than just straight down like most aircraft right (talking about for people on the ground at the moment)?
and I havnt ever flown a glider so I dont really know how noisy airframes are... but I guess it would add up pritty quick on a 747 or something.
Thanks
