Segmented Variable Fan Outlet Guide Vane Actuation

The outlet guide vane is divided into multiple independent segments (first outlet guide vane segment, second outlet guide vane segment, etc.) that can be actuated independently of each other. Each segment can be rotated to different pitch angles to independently control airflow in different radial regions, allowing the system to adapt to varying airflow conditions and maintain fan operability while managing complexity through modular design

The outlet guide vanes are transformed from a fixed structure to a dynamic, adjustable structure. Each vane segment is equipped with an actuation mechanism (such as a cam and cam rod assembly) that allows it to rotate about a pitch axis, enabling real-time adjustment of the vane pitch angle in response to changing airflow conditions, thereby improving fan operability across different operating regimes

Different outlet guide vane segments are assigned different pitch angles based on local airflow conditions and requirements. The first outlet guide vane segment may be set to a different pitch angle than the second segment, allowing each region to be optimized for its specific airflow characteristics. This local differentiation enables the system to match distorted airflows more effectively while the modular actuation system manages the complexity through standardized components

The outlet guide vane assembly is segmented into multiple independently controllable sections, each capable of being rotated to its optimal pitch angle. This segmentation allows the system to address non-uniform airflow distortion by applying different control strategies to different segments, improving adaptability while maintaining manageable complexity through modular architecture