Uploaded June 2024 | Updated September 2026, 2 weeks ago

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Issues of aircraft noise in the communities surrounding airports have long been a concern; however, developing noise mitigation methods for aircraft without decreasing performance or fuel economy has proven challenging. ATA’s EAB has been designed to address these challenges through the use of a deployable swirl vane mechanism to switch the operation of a turbofan engine nozzle from conventional mode to a “drag management” mode. In this mode, swirling outflow from the thrust-generating exhaust stream allows an aircraft to generate equivalent drag in the form of engine thrust reduction at a fixed fan rotor speed;