The Hidden Problem With Boeing's 787, 747-8 & 737 MAX Engines

Boeing’s introduction of engine chevrons stemmed from an effort to mitigate noise pollution generated by their 787, 747-8, and 737 MAX jet engines. These aerodynamic features were designed to decrease sound levels emanating from the engines during operation. However, the implementation of these chevrons simultaneously resulted in a reduction of engine efficiency due to increased drag. Airbus chose not to utilize this technology, maintaining a different approach to noise reduction strategies for their aircraft designs. Ultimately, Boeing itself recognized the detrimental impact on engine performance and discontinued the use of chevrons on its newer models.