This paper aims to numerically validate the aerodynamic performance and benefits of variable camber rate morphing wings, by comparing them conventional ones with plain flaps, when deflection angles vary, assessing their D reduction or L/D improvement. Many morphing-related research works mainly focus on design mechanisms using smart materials, innovative mechanism designs through materials stru...

in this work, harmony search meta-heuristic optimization algorithm has been developed for aerodynamic shape optimization problem for the first time. the aerodynamic shape, which has been investigated, is an airfoil with parces method for its shape parameterization. the problem was minimization of aerodynamic objective function using inverse design method and the objective function has been the ...

with speed increasing in high-speed trains, due to limitations of other types of brakes, aerodynamic brake has become an important braking method. in this task to make better use of brake’s panel different configurations are examined and the best panel shape which provides the reasonable drag coefficient is introduced. the results of simulations are carried out with the computational fluid dyna...

The low Reynolds numbers (< 5 × 10) flows over wings have some unique features specially concerning separation. A comprehensive knowledge about this flight regime is extremely important for the autonomous aircrafts (UAV), since a large percentage of these vehicles operated in this regime. In this report we simulate numerically the wind-tunnel experiments for two different wings inspired in the ...

One-dimensional linear interpolation is extended to arbitrary dimensions and scattered data using nested hypercubes. This is targeted at the evaluation of aerodynamic performance data in trajectory simulations and the generation of multi-fidelity response surfaces, though the approach is general. The algorithm demonstrates logarithmic scaling and quadratic convergence for regular and scattered ...

A flapping wing micro air vehicle (FWMAV) demands high lift and thrust generation for a desired payload. In view of this, the present work focuses on novel way enhancing characteristics through integrating check-valves in membrane. Modal analysis static are performed to determine natural frequency deformation check-valve. Based inference, check-valve opens closes during upstroke downstroke flap...