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The present article covers briefly state of the art software interoperability technical solutions and the development of the first module of a new single platform D & A (design & analysis) tool for simulation and prediction of stress and burst behavior of turbine rotating disc a preliminary design stage. This platform singularity requires integration of multiple CAD (computer assisted design) & FEA (finite element analysis) tools processing in batch mode and driven from a SPIE (single platform integration environment). This first module is also to demonstrate, for an axial turbine disc hub axi-symmetric component, feasibility and usefulness of such a platform at preliminary design stage. Expected benefits of the D & A single platform are to improve output accuracy, reduce cycle time, improve process quality and improve resource productivity.  相似文献   
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Ten steps towards systematic requirements reuse   总被引:1,自引:0,他引:1  
Reusability is widely suggested to be a key to improving software development productivity and quality [1,2]. It has been further argued that reuse at the requirements level can significantly increase reuse at the later stages of development [3,4]. However, there is little evidence in the literature to suggest that requirements reuse is widely practised. This paper describes ten practical steps towards systematic requirements reuse based on work at the Rolls-Royce Systems and Software University Technology Centre (UTC) for Rolls-Smiths Engine Controls Ltd (RoSEC) in the domain of aero-engine control systems. We believe these steps have made a significant overall contribution to the 50% reuse figure quoted by the management at RoSEC for current projects within the BR700 family of engine controllers.  相似文献   
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随着"深蓝战略"的实施,航空发动机热端部件耐海洋大气腐蚀性能的研究引起人们的重视。从海洋大气特点,高温涂层种类,海洋大气腐蚀研究现状,腐蚀机制,检测技术等方面论述了航空发动机高温涂层耐海洋大气腐蚀的研究进展。  相似文献   
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转子/机匣碰摩引起的转子弯扭耦合振动   总被引:1,自引:0,他引:1  
以航空发动机为研究背景,针对其转子/机匣间隙小,转速控制存在延迟,碰摩故障发生可能导致的发动机转子弯扭耦合振动的特征,建立了计及陀螺力矩的弹性支承-柔性转子-弹性静子系统的碰摩故障模型,模型中考虑了有延迟的转速控制力矩。采用延迟微分方程的数值积分方法对方程进行了数值分析。分析结果表明:碰摩作用发生时,剧烈的碰摩会导致转子的反进动,而碰摩与转速控制力矩的延迟共同作用会导致转子的扭转振动加剧,甚至可能发生扭振失稳。应当在发动机控制系统的设计中充分考虑这种转子动力学影响。同时,发动机扭振信号也可以作为转子/机匣发生碰摩的重要诊断信息之一。  相似文献   
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