Aeroengine Multi-Rotors Dynamics Optimization
نویسندگان
چکیده
Abstract Based on detail analyzed optimization model of rotor dynamics of aeroengine multi-rotors system, the sum of weight of normal distribution membership function of fuzzy theory was used to describe the distribution of multi-order critical rotor speeds versus multi in common used operating speeds, and then to formulate the optimal objective function. According to the design specification and criterion, the design variables and constraints, which remarkably influence the critical rotor speeds, were chosen. Finally, the optimization mathematics model for rotor dynamics of aeroengines was formulated successfully. The integrated tool of aeroengine rotor dynamics was set up with VC++ 6.0, where Windows’ I/O interface and visual post processing are implemented. The optimization algorithm was encapsulated into the tool by the form of DLL, and MSC/PATRAN/NASTRAN, which can be used to analyze the deformation and stress of aeroengine rotor.system, was also integrated in it, To validate the tool, the multi-rotors of an aeroengine were optimized and analyzed with this tool.
منابع مشابه
Prediction of the acoustic shielding by aircraft empennage for contra- rotating open rotors
This paper presents a numerical study of the acoustic shielding of aeroengine noise by the aircraft structure. More specifically, the engines considered are contra-rotating open rotors in pusher mode which are installed at the rear of the aircraft. Several empennage designs and engine positions are evaluated. An original method for the calculation of engine noise installation effects is present...
متن کاملCFD and Virtual Aeroengine Modelling
Use of large scale computational fluid dynamics (CFD) models in aeroengine design has grown rapidly in recent years as parallel computing hardware has become available. This has reached the point where research aimed at the development of CFD-based “virtual engine test cells” is underway, with considerable debate of the subject within the industrial and research communities. The present paper c...
متن کاملBlade Geometry Optimization for the Design of Wind Turbine Rotors
This paper describes a blade geometry optimization method for wind turbine rotors in which considerations are given to aerodynamics, structures, noise, and cost. An existing computer program named PROPGA, which is a genetic-algorithm based optimization method for wind turbines, provided part of the foundation for this work. The objective was to develop and implement structures and costs modelin...
متن کاملReduction of Controlled Lagrangian and Hamiltonian Systems with Symmetry
We develop reduction theory for controlled Lagrangian and controlled Hamiltonian systems with symmetry. Reduction theory for these systems is needed in a variety of examples, such as a spacecraft with rotors, a heavy top with rotors, and underwater vehicle dynamics. One of our main results shows the equivalence of the method of reduced controlled Lagrangian systems and that of reduced controlle...
متن کاملPareto Optimization of Two-element Wing Models with Morphing Flap Using Computational Fluid Dynamics, Grouped Method of Data handling Artificial Neural Networks and Genetic Algorithms
A multi-objective optimization (MOO) of two-element wing models with morphing flap by using computational fluid dynamics (CFD) techniques, artificial neural networks (ANN), and non-dominated sorting genetic algorithms (NSGA II), is performed in this paper. At first, the domain is solved numerically in various two-element wing models with morphing flap using CFD techniques and lift (L) and drag ...
متن کامل