Sound absorber for a gas turbine exhaust cone, and method for the production thereof

A gas-turbine exhaust cone, comprising:

• an outer wall including a plurality of through passages;
• a plurality of funnel-like cone elements each being assigned to certain of the plurality of through passages inside the gas-turbine exhaust cone, the cone elements each having a larger opening facing radially outwards and a smaller opening facing radially inwards,
• a plurality of strip-shaped first carrier bands, each of which has a longitudinal extension and on each of which a quantity of the cone elements are provided adjacent to one another along the longitudinal extension;
• a plurality of cup elements being provided radially on an inside relative to the cone elements, each cup element receiving only one cone element;
• a plurality of strip-shaped second carrier bands, each of which has a longitudinal extension and on each of which a quantity of the cup elements are provided adjacent to one another along the longitudinal extension;
• the first carrier bands being arranged side-by-side to one another and skewed in a first direction with respect to an axis of the exhaust cone;
• the second carrier bands being arranged side-by-side to one another and skewed in a second direction with respect to the axis of the exhaust cone;
• the first and second directions crossing each other such that each first carrier band crosses a plurality of second carrier bands and each second carrier band crosses a plurality of first carrier bands;
• the first and second carrier bands being joined to one another and to the outer wall to form a rigid body.