Showing papers in "Progress in Aerospace Sciences in 2003"

TL;DR: In this article, the aerodynamic properties of wind turbine wakes are studied, focusing on the physics of power extraction by wind turbines, and the main interest is to study how the far wake decays downstream in order to estimate the effect produced in downstream turbines.

TL;DR: In this paper, the lattice Boltzmann equation (LBE) is applied to high Reynolds number incompressible flows, some critical issues need to be addressed, noticeably flexible spatial resolution, boundary treatments for curved solid wall, dispersion and mode of relaxation, and turbulence model.

TL;DR: A summary of physical insights gained into three-dimensional linear instability through solution of the two-dimensional partial-differential-equation-based nonsymmetric real or complex generalised eigenvalue problem is presented in this article.

TL;DR: In this article, the Kirchhoff formulation for moving surfaces is compared with the Ffowcs Williams Hawkings (FW-H) equation for the prediction of high-speed impulsive noise, in an effort to eliminate the need to compute the quadrupole contribution.

TL;DR: In this paper, the scaling laws and unsteady flow regime constraining both biological and man-made fliers have been reviewed and an explanation for aerodynamic gains seen in flexible versus rigid membrane wings, derived from a three-dimensional computational fluid dynamics model with an integrated distributed control algorithm, is presented.

TL;DR: In this paper, the authors review the advances made within the past 50 years and then look into the future, not just for new technological developments, but for new ways of thinking about the unknown challenges that lie ahead.

TL;DR: In this paper, a survey of recent computational fluid dynamics (CFD) simulations of turbulent boundary layer interactions is presented, and the capabilities and limitations are described, and future research needs identified.

TL;DR: The physical and the design factors are discussed, which affect the aerohydrodynamic characteristics of flapping wings and that therefore have to be accounted for in the modern mathematical models.

TL;DR: In this article, the aerodynamics of membrane and corresponding rigid wings under the MAV flight conditions are reviewed. And the proper orthogonal decomposition method is also discussed as an economic tool to describe the flow structure around a wing and to facilitate flow and vehicle control.

TL;DR: In this paper, the aerodynamic and the vortical flow structure over simple delta wings undergoing either a pitching or rolling motion are presented, and the importance of unsteady aerodynamics on the flight dynamics of aircraft maneuvering at large angles of attack is examined.

TL;DR: In this paper, a review of the use of high-resolution methods in turbulent flow computations is presented, and theoretical arguments and recent research aiming at justifying their use as an implicit turbulence model are discussed.

TL;DR: In this article, the authors review the available information on the mechanisms of lightning-aircraft interactions based primarily on studies involving four different instrumented aircraft and present available statistics on lightning-related aircraft incidents as a function of aircraft altitude and ambient temperature.

TL;DR: Current predictive capabilities for high angle of attack flows are reviewed, and solutions based on hybrid turbulence models are presented.

TL;DR: In this article, the authors used infrared thermography for the detection of simulated artificially introduced damages on the surface of Al 2024-T3 aircraft skin panels under composite patching or simulated delaminations between two plies of composite patches.

TL;DR: A review of classical interference assessment methods for solid-walled wind tunnels drew attention to weaknesses when applied to heavily separated flows or in tests with models at off-center positions near the roof of the wind tunnel as mentioned in this paper.

TL;DR: The BAE Systems Project Greenglow project as mentioned in this paper is an example of a project-led research in the field of aeronautics, where the primary task is to design radically new aeronautical systems based on new physical principles.

TL;DR: The aim of the experimental program on an aeronautical specimen involving a HMF 322/34 composite was performed in order to find expressions and requirements for the optimisation procedure involving the curing cycles of its components and the development of an Optimisation procedure based on experimental relations and stochastic models.