On simple aerodynamic sensitivity derivatives for use in interdisciplinary optimization [PDF]
Low-aspect-ratio and piston aerodynamic theories are reviewed as to their use in developing aerodynamic sensitivity derivatives for use in multidisciplinary optimization applications.
Doggett, Robert V., Jr.
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Improvements to tilt rotor performance through passive blade twist control [PDF]
A passive blade twist control is presented in which the twist distribution of a tilt rotor blade is elastically changed as a function of rotor speed. The elastic twist deformation is used to achieve two different blade twist distributions corresponding ...
Nixon, Mark W.
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An integrated approach to the optimum design of actively controlled composite wings [PDF]
The importance of interactions among the various disciplines in airplane wing design has been recognized for quite some time. With the introduction of high gain, high authority control systems and the design of thin, flexible, lightweight composite wings,
Livne, E.
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Aerodynamics of an airfoil with a jet issuing from its surface [PDF]
A simple, two dimensional, incompressible and inviscid model for the problem posed by a two dimensional wing with a jet issuing from its lower surface is considered and a parametric analysis is carried out to observe how the aerodynamic characteristics ...
Karamcheti, K., Tavella, D. A.
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Multi-disciplinary optimization of aeroservoelastic systems [PDF]
New methods were developed for efficient aeroservoelastic analysis and optimization. The main target was to develop a method for investigating large structural variations using a single set of modal coordinates.
Karpel, Mordechay
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Design of 3-dimensional complex airplane configurations with specified pressure distribution via optimization [PDF]
A subcritical panel method applied to flow analysis and aerodynamic design of complex aircraft configurations is presented. The analysis method is based on linearized, compressible, subsonic flow equations and indirect Dirichlet boundary conditions ...
Kubrynski, Krzysztof
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Aerodynamic design using numerical optimization [PDF]
The procedure of using numerical optimization methods coupled with computational fluid dynamic (CFD) codes for the development of an aerodynamic design is examined.
Chapman, G. T., Murman, E. M.
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Design and Verification of New Head Type of Super High-speed EMUs
机车电传动, 2016 To decrease the aerodynamic drag of super high-speed EMUs, integrating high-speed EMUs head type design elements at home and abroad together, a new head type for super high-speed EMUs with speed of 500 km/h was designed.
LI Ming, LI Minggao, LIU Nan, HAN Lu
doaj
Transonic airfoil design for helicopter rotor applications [PDF]
Despite the fact that the flow over a rotor blade is strongly influenced by locally three-dimensional and unsteady effects, practical experience has always demonstrated that substantial improvements in the aerodynamic performance can be gained by ...
Hassan, Ahmed A., Jackson, B.
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High-fidelity Multidisciplinary Sensitivity Analysis and Design Optimization for Rotorcraft Applications [PDF]
A multidisciplinary sensitivity analysis of rotorcraft simulations involving tightly coupled high-fidelity computational fluid dynamics and comprehensive analysis solvers is presented and evaluated.
Bauchau, Olivier A. +4 more
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