Listees: Jim points out (2) verry importent factors when dealing with noise ans 2 very simple solutions.
The 1st was the treatment of his 182s tail-cone adding the material strategically to the "Cone" that looks like a "Giant Megaphone'' in a way provided "Destructive Interference " to the aircraft shell and the light weight partition that interferred with length of the vibrating column of air in the tail cone. The (2) was interfereing with the free movement of "High Velocity" air which can generate a lot of audible noise and worse yet inaudible noise that can be stressful and you not even know it. A plane just moving though the air at 100 to 200 mph can make a lot of that, just consider a strong wind blowingthrough the tree disrupting the airflow. Don ------------------------------------------------------------------------ Jim wrote: > This may not transfer to wood aircraft however I bought sound deadening > material from a company called E.A.R it was a sticky foam with an aluminum > back it stuck on like tape .I did this on my Cessna 182 and got more than one > comment on how Quiet my airplane was . I put it in the center of two bay aft > of the cockpit and added a thick paper partition aft of that with cut outs > for control cables .After I did that I started finding small little air > leaks. The one thing that made the biggest change that was immediately > noticeable was adding wind lace around the doors. Wind lace looks like a > piece of rope with a fabric flange on one side that you can bend around > curves to fit the opening. > > You may want to try this to get a quieter cockpit it sure worked good in my > Cessna. > > Jim B K.R.-2 S Wichita > _______________________________________ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html
