Zoned liner exhaust with buried N-core

A noise attenuation system for a gas turbine engine, comprising:

• an exhaust nozzle having a first noise attenuation panel disposed on a radial inner side of the exhaust nozzle;
• a center plug, the exhaust nozzle configured to surround the center plug, the center plug comprising:
• an inner skin, the inner skin having a substantially cylindrical shape and extending along an axial centerline,
• a forward bulkhead disposed proximate a forward end of the inner skin, the forward bulkhead connected to and extending radially outward from the inner skin,
• an aft bulkhead disposed proximate an aft end of the inner skin, the aft bulkhead connected to and extending radially outward from the inner skin,
• an outer skin, the outer skin connected to and positioned radially outward of the forward bulkhead and the aft bulkhead,
• a plurality of baffles spaced circumferentially about the inner skin and extend radially between the inner skin and the outer skin and axially between the forward bulkhead and the aft bulkhead, and
• a second noise attenuation panel disposed on a first side of each baffle of the plurality of baffles, the second noise attenuation panel positioned such that the noise is received in a rotating pattern in a first direction.