[PDF] Top 20 Petiolate wings: effects on the leading-edge vortex in flapping flight

... the wings, at the mid-span position, the LEV growth rates are more compar- able across P ¼ 1–3 (figure ...the vortex is generally larger and stronger for more petiolate ...trailing edge, ... See full document

... the flight of the birds and ...use flapping wings in order to be able to ...the flapping flight, helicopter rotor dynamics and wind power devices is incomplete partly because of the ... See full document

... fly wings up to, and including, naturally occurring ...gliding flight, and quantified the contribution that the forewing leading-edge vortex makes to weight support during typical ... See full document

... trailing edge vorticity in their studies on the clap-and-fling (see peel, ...Lighthill’s leading-edge separation bubble was later replaced by Edwards and Chen (1982), who introduced the concept of ... See full document

... model wings and the flat-plate wing To study the effects of wing corrugation, we used four model wings: three corrugated wings with different corrugation patterns and one flat-plate ...model ... See full document

... attached leading edge vortex (LEV) on top of their ...on flapping fly wings we expressed the Navier–Stokes equations in a rotating frame of reference attached to the wing’s ...on ... See full document

... biological flight vehicles is ...sustainable flight conditions (L > ...for wings with high ...biological flight the downstroke time is more than upstroke ...and leading edge ... See full document

... the leading- edge flow structures on the flapping wings are analogous to those on the fixed delta wings, for example, the conical primary vortex, the intense spanwise flow, the ... See full document

... insect wings (Ellington, 1984) and that unsteady effects such as delayed stall can contribute up to 2/3 of the required lift generation for insects (van den Berg and Ellington, 1997), bird flight is ... See full document

... AR effects on insect-like flapping wings was that of Usherwood and Ellington (2002b), who investigated the forces produced by revolving hawkmoth wing planforms in the range AR = ...the effects of ... See full document

... Dragonfly wings possess great stability and high load-bearing capacity during flapping flight, gliding and hovering, despite the fact that their mass is less than 2% of the insect’s total mass; such ... See full document

... leading edge vortex (LEV), the hallmark of dynamic stall, has been observed on the leading edge of model Manduca wings at Re=5000 and model Drosophila wings at ...the ... See full document

... The vortex formation of the wake of dual-flapping foils has been numerically studied using the immersed boundary ...von-Kármán vortex street, an interesting phenomenon, the deflection of the ... See full document

... non-linear vortex-wave interaction solutions in a compressible boundary layer whereas here we are simply considering the incompressible ...separate vortex or wave components in each region or ...The ... See full document

... during flight and lowers the flight performance of ...on flight performance in the absence of other damage to the wing membrane, ...trailing edge of the plagiopatagium would alter the ... See full document

... of leading- edge tubercles for a 2D foil, the next task of this research was to apply the optimized tubercle shapes onto a 3D representative tidal turbine blade to understand the impact of the tidal turbine ... See full document

... of vortex-body interactions in the area of flapping foil propulsion and energy ...a flapping foil in the wake of a D-section cylinder experimentally and reported the strong de- pendence of the ... See full document

... When the wings are not in use they lie parallel over the abdomen with the fringes collapsed; in this closed position the trailing edge cilia do not.entangle and the forewing leading edge[r] ... See full document

... Additionally, the diminishing chordwise constraint of membrane excess length towards the tip could have caused a spanwise increase in profile camber. This would have caused the local zero-lift angle of attack to decrease ... See full document

... The most probable candidate appears to be the cambered cross section. The wing relief of butterflies has attracted little attention. It is most obvious in the membrane, which has deep grooves between and parallel to most ... See full document