... two ideas leads to a novel class of airfoil structures (active aeroelastic, compliant airfoils) which enable operation at and beyond aeroelastic instabilities. Such structures need a new modeling approach, which includes nonlinearities of structural and aerodynamic kinds. In this paper, a non linear...

... provide a fighter aircraft with a variable engine inlet capability. The reconfigurable rotor blade program demonstrated the ability of highly robust, controlled 55-Nitinol tube actuators to twist a rotor blade in a spin stand test to optimize rotor aerodynamic characteristics. The variable geometry...

...P. S. Sreetharan; R. J. Wood Flapping-wing robotic platforms based on Dipteran insects have demonstrated lift to weight ratios greater than 1, but research into regulating the aerodynamic forces produced by their wings has largely focused on active wing trajectory control. In an alternate approach...

... in this study is experimentally validated. actuators aerodynamics aerospace components aerospace control design engineering flexible structures laminar flow laminates shape memory effects subsonic flow morphing wing flexible extrados SMA actuators Ti–Ni shape memory alloys design...

...K. Kurien Issac; Sunil K. Agrawal In this paper, we investigate the effect of using springs and wing motions to minimize the power required by a mechanical bird to fly. Inertia forces as well as aerodynamic forces on the wing are included. The design takes into account different flight speeds...

...Apurva Kumar; Andy J. Keane; Prasanth B. Nair; Shahrokh Shahpar This paper is concerned with robust aerodynamic design of compressor blades against erosion. The proposed approach combines a multiobjective genetic algorithm with geometry modeling methods, high-fidelity computational fluid dynamics...

...-line mechanism with a drive train utilizing a Geneva wheel and a spatial articulation. The actual design, implementation, and testing of this concept are briefly described at the end of the paper. Not only are insectlike aerodynamics quite complex, but their observation and measurement in nature...

... is a parameter that strongly influences the inlet air mass of the diesel engine. This study deals with radial bearings and illustrates the advantages and the limits of the aerodynamic bearing application. First, the computing concerns the determination of the bearing load by resolving the Reynolds equation. So...

... flying-bird prototypes. 27 05 2004 25 02 2005 optimisation design aerodynamics kinematics In the field of flying machines, a number of successful research have been conducted on fixed-wing vehicles. However, as one shrinks the size to micro flying machines, flapping-wing...

... similar to an insect thorax which stores part of the kinetic energy of the wing as elastic potential energy in the thorax during a flapping cycle; (ii) inclusion of aerodynamic wing models using blade element theory and inertia of the mechanism using rigid body modeling techniques; (iii) optimization...