초록 ▼

A sound suppressor liner for aircraft exhaust passages is described which is based on the Helmholtz resonator principle including an inlet passage leading into a closed cavity wherein the inlet passages defined by a pair of curved walls with one wall being concave and the other wall being convex and

A sound suppressor liner for aircraft exhaust passages is described which is based on the Helmholtz resonator principle including an inlet passage leading into a closed cavity wherein the inlet passages defined by a pair of curved walls with one wall being concave and the other wall being convex and the space between the walls gradually diminishing from the inlet of the inlet passage to the outlet within the cavity in a sense simulating an acoustic horn in reverse.

대표청구항 ▼

A suppressor liner comprising a first shell and a second shell spaced from the first shell with the second shell being permeable to sound and in contact with a gas path, sheet metal members forming a plurality of attenuator cells, each cell defining a cavity and having inlet passage means therein an

A suppressor liner comprising a first shell and a second shell spaced from the first shell with the second shell being permeable to sound and in contact with a gas path, sheet metal members forming a plurality of attenuator cells, each cell defining a cavity and having inlet passage means therein and constituting a battery of cells between the first shell and the second shell, the adjacent cells in the battery being formed by similarly formed sheet metal members with each member having a first concavely curved section relative to the second shell and forming a wall of the inlet passage of a first cell, a second continuing convexly curved section relative to the gas path and forming a portion of the cavity of a second cell with the first shell, an inwardly looped third section forming the convex wall of the inlet passage of the second cell such that each sheet metal member overlaps an adjacent member to form subsequent cells.