| 主权项 |
1. A gas turbine engine exhaust cone comprising one or more acoustic absorption chambers, each chamber comprising two side walls and an acoustic attenuation wall, the side walls defining the circumferential extent of the chamber and the acoustic attenuation wall having one or more acoustic attenuators and being positioned circumferentially intermediate the side walls, where the side walls extend axially along the exhaust cone at least one of them with a circumferential progression and the acoustic attenuation wall extends axially along the exhaust cone with or without a circumferential progression. |
