June 2014 Issue
Soundproofing: Affordable, Effective
When the interiors out for a refurb or avionics upgrade, less than $2000 in materials and labor should quiet the cabin measurably.
Its no news to anyone that general aviation airplane cabins are loud. After all, the engines have minimal mufflers, the thin aluminum skins vibrate like a drum, the exhaust exits ahead of the cabin, the tail cone is shaped like a loudspeaker aimed at the occupants, the windows are thin, the prop tips are moving at a high percentage of Mach and the manufacturers sound insulation is minimal.
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