Leading-edge vortices over swept-back wings with varying sweep geometries

Leading-edge vortices over swept-back wings with varying sweep geometries

Blog Article

Micro air vehicles are used in a myriad of applications, such as transportation and surveying.Their performance can be improved through the study of wing designs and lift generation techniques including leading-edge vortices (LEVs).Observation of natural fliers, e.g.birds and bats, has shown that LEVs are a major contributor to lift during flapping flight, and the common swift (Apus apus) has been observed to generate LEVs during gliding flight.

We hypothesize that nonlinear swept-back wings generate a airpods pro houston vortex in the leading-edge region, which can augment the lift in a similar manner to linear swept-back wings (i.e.delta wing) during gliding flight.Particle image velocimetry experiments were performed in a water flume to compare flow over two wing geometries: one with a nonlinear sweep (swift-like wing) and one with a linear sweep (delta wing).Experiments were performed at three spanwise planes and three angles of attack at a chord-based Reynolds number of 26 000.

Streamlines, vorticity, swirling strength, and Q-criterion were used to identify LEVs.The results show similar LEV characteristics for delta and swift-like wing geometries.These similarities suggest that sweep geometries other than a linear sweep (i.e.delta wing) are depileve easy clean capable of creating LEVs during gliding flight.