Flexible membrane structure is generally used as wing skin for long-endurance low-speed aircraft, such solar to control the weight within allowable range. Predictably, elastic deformation of under complex loads will cause uncertain impacts on aerodynamic performance. The existing research indicates that helpful improve characteristics. However, most objects are non-thickness wings. In this pape...

Dynamic stall on airfoils negatively impacts their aerodynamic performance and can lead to structural damage. Accurate prediction modelling of the dynamic loads are crucial for a more robust design wings blades that operate under unsteady conditions susceptible widening range operation these lifting surfaces. Many models rely empirical parameters need be obtained from experimental or numerical ...

in this research, the calculation method of aerodynamic loads on an airplane in all flight situations is presented. in order to find an calculation equation for aerodynamic loads on an airplane in all flight conditions, the f-5 aircraft is selected as a prototype is divided into one hundred small parts longitudinally. therefore, the numerical solutions are taken place in different conditions of...

Aircraft loss-of-control, in particular approach to stall or fully developed stall, is a major factor contributing to aircraft safety risks, which emphasizes the need to develop algorithms that are capable of assisting the pilots to identify the problem and providing guidance to recover the aircraft. In this paper we present several stall recovery guidance algorithms, which are implemented in t...

Title of Dissertation: A Coupled CFD/CSD Investigation of the Effects of Leading Edge Slat on Rotor Performance Asitav Mishra, Doctor of Philosophy, 2012 Dissertation directed by: Associate Professor James D. Baeder Department of Aerospace Engineering A coupled Computational Fluid Dynamic (CFD) and Computational Structural Dynamics (CSD) methodology is extended to analyze the effectiveness of a...

Computers have had a twofold impact on the science of aerodynamics. On the one hand numerical simulation may be used to gain new insights into the physics of complex flows. On the other hand computational methods can be used by engineers to predict the aerodynamic characteristics of alternative designs. Assuming that one has the ability to predict the performance, the question then arises of ho...

This paper introduces the realization and wind tunnel testing of a novel variable camber wing equipped with compliant morphing trailing edges. Based on aerodynamic shape mechanisms that were optimized in advance, model called mTE4 was developed, which rigid leading edge, box, edge manufactured by 3D printing technology using three different materials. Due to difficulties detailed design small-s...

A combination of theoretical and computational nonlinear analysis techniques are used to study the scenario of bifurcations responsible for the initiation of rotating stall in an axial ow compressor model. It is found that viscosity tends to damp higher-frequency modes and so results in a sequence of bifurcations along the uniform-ow solution branch to stall cells of diierent mode number. Lower...

The dielectric barrier discharge (DBD) plasma actuator that controls flow separation is one of the promising technologies to realize energy savings and noise reduction of fluid dynamic systems. However, the mechanism for controlling flow separation is not clearly defined, and this lack of knowledge prevents practical use of this technology. Therefore, large-scale computations for the study of t...