A Preliminary Investigation of Trailing Edge Serrations in High Lift Systems

A wind tunnel investigation into the effect of trailing edge serrations ahead of single slotte d flaps was undertaken to examine the potential for enhancing the aerodynamic performance of conventional high lift systems . Measurements of incremental drag and lift were made using both a generic flat plate model and the 2D HELIX high lift system, as p art of broader programme. The data indicates that a serrated trailing edge can enhance slotted flap performance at specific flap lap/gap settings and flap deflections.