Patent ID: 8061145

Claim:
An arrangement for propelling an aircraft comprising a jet engine and an outlet nozzle arranged downstream of the jet engine, the jet engine being of a type which generates an internal core flow and an external fan flow, a part of the outlet nozzle having an internal surface which defines a gas duct for the fan flow, wherein the part of the outlet nozzle comprises a wall structure that is arranged at a distance from the internal surface such that it separates the gas duct for the fan flow from an internal gas duct for the core flow, the wall structure being tubular and having an extent in an axial direction of the outlet nozzle, and the internal surface exhibiting a form such that at least one part of the fan flow is deflected, the wall structure comprising a plurality of sleeves that overlap one another in the axial direction of the outlet nozzle and the outlet nozzle comprises a structural part that comprises the internal surface, the structural part being formed of a composite material, wherein the wall structure is designed to absorb thermal loadings, the structural part, which comprises the internal surface, is designed to absorb mechanical loadings during operation.