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For the purpose of acquiring the immersion and reality of flight simulation, there is a necessity to reproduce 3D sound field of aircraft cockpit. In this paper, a 3D sound simulation system which is integrated into flight simulator used for training pilots is developed. After determining the sound events which will be simulated in flight simulation, spectrum analysis and time-frequency analysis are...
This paper introduces methods of several transformation matrixs in filight simulation on digital Earth. Use these methods and use double-precision matrix, avoiding the calculation of the simulation engine, the error caused by an error caused by simulation results, to better meet the design requirements.
Aircraft MDO (Multidisciplinary Design Optimization) needs Grid technology because of complex process and time-consuming design. Specifically, aircraft MDO can benefit from Grid computing in terms of massive computational capacity and resource sharing. However, determining how to manage aircraft MDO processes and how to effectively apply grid technology into aircraft MDO remain as problems, which...
In order to investigate and exploit advanced flight management system with complete functions, provide applicable and reliable performance data for optimal trajectory search, data structure requirements of performance database of flight management system are presented, including the structure of aerodynamic data ,engine performance data and operation data. The whole authentic performance data is acquired...
Given article describes the motivation for use of commercial off the shelf (COTS) components for the development of critical control applications in the aerospace industry. A V-cycle model based development is introduced and its advantages and development practices that leads from design of a MATLAB/Simulink models into a real target application are depicted. Attention is also paid on FAA/EASA certification...
In the aerospace field one often has to deal with a host of highly specialized software applications that need to be orchestrated into one optimization process to produce e. g., an optimized aircraft model. This optimization process combines engineering knowledge from fields as diverse as aerodynamics, aeroelasticity, engine building, environmental impact assessment, material science and structural...
A new fusion model is proposed, which is the combination of BP neural networks and rough set algorithm, to solve the problems of low precision rate in aircraft engine fault diagnosis by traditional methods. The method realizes feature level fusion of all subjective data and expert experiments on different parts of engine, and the predominance compensation of different models. In simulation experiment,...
The Department of Civil and Mechanical Engineering at the United States Military Academy requires its graduates to complete an integrative capstone design in their senior year. One of these projects involves the design, construction, testing, and demonstration of a small, highly autonomous, uninhabited aerial system (UAS). This particular capstone option was added to the list of available capstone...
Because of aeroengine properties such as the strong nonlinearity and time-varying uncertainty, a new identification algorithm of aeroengine model based on improved LS-SVM was brought forward. In the method, LS-SVM robustness was improved by adding weighed values to errors and its sparseness was improved by clipping algorithm. In terms of the recorded flight data on some turbofan engine, improved LS-SVM...
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