초록 ▼

A double layer structural honeycomb sandwich noise suppression panel for use in severe environments such as aircraft turbine engine housings. Two honeycomb core sheets having multiple cells transverse to the sheets are sandwiched around and bonded to a septum sheet consisting of a wire cloth sheet a

A double layer structural honeycomb sandwich noise suppression panel for use in severe environments such as aircraft turbine engine housings. Two honeycomb core sheets having multiple cells transverse to the sheets are sandwiched around and bonded to a septum sheet consisting of a wire cloth sheet alone or bonded to a sheet of perforated material. A thin sheet of impervious material is bonded to one surface of the sandwich and a facing of thin perforated sheet material is bonded to the other sandwich surface. The panel has improved simplicity, structural strength with unusually light weight.

대표청구항 ▼

A double layer noise suppression honeycomb sandwich panel of improved simplicity, high structural strength and light weight for use in severe environments in and around high velocity fluid flow paths and high sonic environments which comprises: a first honeycomb core sheet having a multiplicity of c

A double layer noise suppression honeycomb sandwich panel of improved simplicity, high structural strength and light weight for use in severe environments in and around high velocity fluid flow paths and high sonic environments which comprises: a first honeycomb core sheet having a multiplicity of cells with walls of thin sheet material, said cells directed transverse to said panel; a thin sheet of impervious material bonded to one major surface of said first honeycomb core sheet; septum having a pliable non-linearity factor of less than 1.5 bonded to the second major surface of said first honeycomb core sheet; a second honeycomb core sheet having a multiplicity of cells with walls of thin sheet material, said cells directed transverse to said panel, said second honeycomb core sheet bonded to said septum; and a facing of perforated sheet material bonded to the free surface of said second core sheet.