Showing papers in "Progress in Aerospace Sciences in 1999"

TL;DR: In this paper, the scaling laws of biological and micro-air vehicles involving wing span, wing loading, vehicle mass, cruising speed, flapping frequency, and power are summarized and discussed.

TL;DR: In this paper, the present state of the large-eddy simulation (LES) technique is discussed, and results of state-of-the-art calculations are presented to highlight the response of the subgrid-scale models to important features of the flow field.

TL;DR: In this paper, a review of the fundamental characteristics of the shock train and pseudo-shock is presented, and some simple predictions are made to simulate these very complicated phenomena, and control methods of the pseudo-shocks are also described.

TL;DR: In this article, the equations of motion of a two-dimensional airfoil oscillating in pitch and plunge are derived for a structural nonlinearity using subsonic aerodynamics theory.

TL;DR: In this article, a review of the results of basic experiments on the transition process in three-dimensional boundary layers governed by crossflow instability is presented, with a detailed description of the essential physical features rather than a complete survey on all the experiments known so far.

TL;DR: In this article, the authors present an overview of research conducted on the structure and modification of lift-generated vortices generated by the lifting surfaces of subsonic transport aircraft.

TL;DR: In this article, a review of recent experiences in CFD-based drag prediction with an emphasis on flow solutions governed by the Euler and Reynolds-averaged Navier-Stokes equations is presented.

TL;DR: A survey of microelectromechanical systems for the diagnosis and control of turbulent shear flows can be found in this paper, where the status and outlook of microsensors and microactuators as used for those particular applications, and compare the minute devices to their larger cousins.

TL;DR: In this paper, the first step of the TSM is referred to as ''flight path reconstruction'' and a modified recursive maximum likelihood adaptive filter (MRML) is proposed to solve the problem.

TL;DR: A comprehensive review of the application of Planar Doppler Velocimetry to laboratory flows, supersonic flows, and large scale subsonic wind tunnels is given in this article.

TL;DR: In this article, separate flow and vortex induced rotary motion of various wings and airplane configurations is discussed with emphasis on the limit cycle roll oscillations, commonly referred to as "wing-rock".

TL;DR: In this paper, the design and analysis of airbreathing hypersonic vehicles is discussed and HOLIST, a framework that modularly integrates the analysis methods for use in design and optimization, is presented.

TL;DR: In this article, the effect of transverse surface curvature on the turbulent boundary layer is reviewed by recourse to experiments on axial flow along a circular cylinder and three flow regimes are identified depending on values of the two controlling parameters, namely, the Reynolds number and the ratio of the boundary layer thickness to cylinder radius.

TL;DR: A reasoned conjecture of the future up to 2050 AD including estimates of energy supply and consumption, transport system developments and corresponding pollution effects and later work on normative forecasts is also included.