The design and optimization of aircraft structures need to be accompanied by the analysis their aerodynamics. This paper presents numerical calculations wind tunnel tests determine aerodynamic characteristics designed unmanned aircraft. aim study was analyze performance hybrid aerial vehicle its longitudinal stability. unique design, i.e. a which is combination gyrocopter multi-rotor has not be...

Abstract There has been a renewed interest in developing environmentally friendly, economically viable, and technologically feasible supersonic transport aircraft reduced order modeling methods can play an important contribution accelerating the design process of these future aircraft. This paper reviews use vortex lattice method (VLM) general aerodynamics subsonic The historical overview is re...

Supersonic biplanes can achieve low-boom and low-drag supersonic flights. In the present study, aerodynamic analysis of a two-dimensional stagger Bussmann biplane (staggered upper element by 0.5c) at zero degrees angle attack with trailing edge flap was investigated help computational fluid dynamics (CFD) tools. Due to wave cancellation effect, Busemann delivers positive drag reduction design M...

1 Robert O. Lawton Distinguished Professor, Department of Mathematics, Fellow AIAA. 2 Post-Doctoral Research Associate, Department of Mathematics. 3 Research Scientist, Structural Acoustics Branch, Aerodynamics, Aerothermodynamics and Acoustics Competency, Member AIAA. 4 Senior Research Scientist, Computational Modeling and Simulation Branch, Aerodynamics, Aerothermodynamics and Acoustics Compe...

The objective of the current work is to define a design optimization methodology in aerodynamics, which all numerical components are based on unique geometrical representation, consistent with Computer-Aided Design (CAD) standards. In particular, parameterized by Non-Uniform Rational B-Splines (NURBS), computational domain automatically constructed using rational Bézier elements extracted from ...

With advanced subsonic transports and military aircraft operating in the transonic regime, it is becoming important to determine the effects of the coupling between aerodynamic loads and elastic forces. Because aeroelastic effects can signiŽ cantly impact the design of these aircraft, there is a strong need in the aerospace industry to predict these interactions computationally.Such an analysis...

A large-scale, real-world application of Evolutionary MultiCriterion Optimization (EMO) is reported in this paper. The Multidisciplinary Design Optimization among aerodynamics, structures and aeroelasticity for the wing of a transonic regional jet aircraft has been performed using high-fidelity models. An Euler/Navier-Stokes (N-S) Computational Fluid Dynamics (CFD) solver is employed for the ae...

The study investigates the effects of servo valve nonlinearity, actuation compliance and friction related nonlinearity on the dynamics of a flight control surface, during its deployment through an electro-hydraulic actuation system. Starting from the pilot command, a realistic model of the electro-hydraulic actuation system is evolved, which includes the command lags, servo valve nonlinearity, ...

– Wind tunnel is a device, by artificially producing airflow relative to a stationary body that measures aerodynamic force and pressure distribution to simulate with actual conditions. Wind Tunnels offer a rapid, economical, and accurate means for aerodynamic research. The most important aspect of wind tunnels is their ability to accurate recreate the full complexity of full fluid flow. In the ...