An investigation of the noise reduction mechanisms of over-the-rotor liners for electric ducted fan applications using a duct acoustics approach

Key Points

• Noise reduction mechanisms improve performance in electric ducted fan designs, focusing on over-the-rotor liners.
• Duct acoustics played a crucial role in understanding the acoustic mechanisms at work in this context.
• The analysis incorporated various acoustic models to assess noise reduction in electric ducted fans and their efficiency.
• These findings highlight the potential for further innovation in noise control technologies applicable to electric ducted fans.