Ribs in aircraft wings maintain the airfoil shape of wing under aerodynamic loads and also support resulting bending shear that act on wing. Aircrafts are designed for least weight hence made hollow torsion box ribs with cut-outs to reduce structure. These will lead higher stresses stress concentration can failure structures. The depend thus present work, commercial software ANSYS was used eval...

Control of aerodynamic loads in wind turbines is a critical issue in terms of keeping them economically competitive with alternative energy sources. This paper continues the investigation of the use of Iterative Learning Control (ILC) for load control in wind turbines with smart devices on rotor blades. Smart devices controlled by ILC are used to modify the blade section aerodynamics such that ...

Small stationary diesel engines, like in generator sets, have limited emission control measures and are therefore responsible for 44% of the particulate matter (PM) emissions in the United States. The diesel exhaust composition depends on operating conditions of the combustion engine. Furthermore, the measurements are influenced by the used sampling method. This study examines the effect of eng...

Abstract: Addressing the simulating issue of the helicopter-manipulating booster aerodynamic load with high-frequency dynamic load superimposed on a large static load, this paper studies the design of the robust controller for the electro-hydraulic loading system to realize the simulation of this kind of load. Firstly, the equivalent linear model of the electro-hydraulic loading system under as...

As the size of wind turbine blades increases, influence geometric nonlinearity on aerodynamic, structural and design becomes more serious. In this work, efficient aero-elastic calculation large flexible is studied. order to solve problem aeroelastic caculation blades, work applied geometrically exact beam theory based Legendre spectral finite element coupled with blade momentum establish analys...

During the flight mission of hypersonic aircraft, severe aerodynamic heating will occur on surface, so thermal protection system (TPS) is required to protect load-bearing structure aircraft. The present paper develops an engineering software for automatic optimization thickness tile-type TPS reusable For requirements aircraft in reentry stage, method heat flow-time curve enveloping, material se...

Flapping flight is an increasingly popular area of research, with applications to micro-unmanned air vehicles and animal flight biomechanics. Fast, but accurate methods for predicting the aerodynamic loads acting on flapping wings are of interest for designing such aircraft and optimizing thrust production. In this work, the unsteady vortex lattice method is used in conjunction with three load ...

3D techniques are increasingly used in aerospace industry to improve quality and performance of aircrafts. This paper presents a 3D imaging technique for studying the aerodynamic shape and flight performance of micro air vehicles. 3D stereoscopic vision, based upon stroboscopic imaging, was utilized to obtain the 3D information of the aircraft’s flexible aerodynamic surface. The aircraft models...