English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

While dragonflies are highly agile flyers, some key aerodynamic mechanismsresponsible for their flight performance remain inadequately understood. Basedon forward flight conditions, we investigate dragonfliess spanwise aerodynamicbehaviors associated with flapping wings phasing relationship. Overall, theleading edge vortex (LEV) on the forewing forms without the influence of thehindwing. For hindwing, the wing root region prominently displays a trailingedge vortex (TEV). In the inner span region, the vortical flow structuresaround the hindwing is influenced by the forewings LEV when both wings are inclose proximity and move in opposite directions. In the mid-span region,downwash following the forewing suppresses LEV formation on the hindwing.Finally the outer span region of the hindwing develops its LEV by wake captureat the end of a stroke cycle. In the inner region, the timing of shedding onboth fore- and hind-wings is synchronized, which is not the case elsewhere.These varied flow structures suggest that the fore- and hind-wings, along theirspanwise directions, play different roles in force generation.

Dragonflies Utilize Flapping Wings Phasing and Spanwise Characteristics to Achieve Aerodynamic Performance