INLET NOISE SILENCER FOR A JET ENGINE

摘要

The noise silencer consists of an annular chamber being in communication with the inlet of the gas turbine engine and a substantially U-shaped baffle member disposed between the inlet of the silencer and the inlet of the engine wherein the legs of the U are spaced substantially parallel to the side walls of the cavity to define flow channels with L/D ratios (length to diameter or the smallest planar cross-sectional dimension when the cross section is other than circular) being greater than 1/2, which channels serve to guide the air and sound waves over a resistive acoustical lining and provide a lined bend around which the air and sound waves must pass.