A set of systems for labor standards computer-aided design

A set of systems for labor standard computer-aided design is described, namely, initial developments, advance and state-of-the art.     

旋板泵过渡曲线的数学模型

为了实现计算机辅助设计和辅助制造双作用式旋板泵定子过渡曲线,本文试提出过渡曲线的一种数字模型,用来取代目前常用的极座标过渡曲线方程。利用这一数学模型便于分析、此较和评价各种过渡曲线的特性;扩大了过渡曲线的设计范围;有利于编写通用的计算机程序,为进一步实现过渡曲线的最佳设计创造了条件。     

An algorithm for computer-aided design calculation of aircraft stability and controllability parameters

An algorithm is proposed for computer-aided calculation of required values of aircraft controlling moments and aerodynamic moment coefficients for stable fulfillment of flight trajectories specified by design flight performance.     

Research and development version of computer-aided system of aircraft and rocket-space equipment vibration tests

In this paper, a research and development version of the computer-aided system of mass tensometry (SMT) for conduction of aircraft and rocket-space equipment vibration tests is considered. A technique of the system design and development that combines the advantages of the system and process approaches when using the modern element base around the high-performance integral microcircuits is a distinctive feature in this research and development problem solution. We describe the architecture and structure of the advanced computer-aided SMTs and present data on its basic components desigtn. Also determined are the list and functional parameters of ratio-measuring network modules as well as the scheme of their connection to the test object and the local computer network of the enterprise.     

电路分析语言ECAL

计算机辅助设计技术是计算机应用的重要发展,是计算机科学的一个重要组成部分。电路分析的专用语言是模拟电路的计算机辅助设计或辅助分析技术（简称为CACD和CACA）的基础。 电路分析语言ECAL是利用FORTRAN语言对语句进行解释执行的一种比较简单,而使用又比较方便的电路分析专用语言,它能对电路进行直流分析、交流分析和暂态分析,而且直流分析的结果可以直接作为交流或暂态分析的初始条件而转入交流或暂态分析。 ECAL语言用接近电路工程人员习惯的输入语句来描述电路,允许使用的元件除常规线性的如电阻、电容、电感、电流源、电压源等以外,还允许使用二极管、晶体三极管和非线性电阻等非线性元件,因此它可以对线性或非线性电路和系统进行分析。 ECAL语言用简单的输出语句来控制分析结果数据的输出形式,它可以是表格、也可以是图形以适应不同的需要。因此它对于工程技术人员来说是一种很有用的分析工具。     

Dynamics investigation of the two-channel automatic system controlling the mirror of aircraft-based surveillance-search system

The mathematical model of the control system for the mirror having a cardan suspension, installed aboard an aircraft is investigated. Control algorithms that provide the required dynamic properties in scanning, guidance and tracking modes were synthesized. We analyze dynamics of the control system for a mirror with regard to nonlinearities in controllers using the computer-aided simulation.     

Computer-aided formation of the aircraft appearance on the basis of base version reconfiguration

A technique for the computer-aided aircraft appearance formation is presented; the technique is based on the use of potentialities of the present-day systems and means of design work automation. In the technique being suggested, a process of the aircraft appearance formation is accomplished based on the reconfiguration of a parametric model of the base configuration.     

Computer-aided tests in the quality control system of aircraft engines

The quality control system for an aircraft engine that is continuously developed in the life cycle stages is considered. Main quality indicators and their control methodology are analyzed. The computer-aided tests are substantiated as part of the quality control system and their generalized technological process structure and its construction methodology are proposed.     

Topical problems of corporative control in aircraft manufacturing

In this paper, the necessity for applying the corporative methods and tools of control over the processes of development, production, and realization of aircraft engineering articles is substantiated. The general structure of aircraft-manufacturing corporation is presented. Some problems of constructing the most advanced computer-aided corporative systems of control in aircraft manufacturing are discussed.     

受约束多刚体系统动力学的计算机辅助分析

 以Newton-Euler法为基础建立了受约束多刚体系统动力学的一种新的递推算法,采用奇异值分解(SVD)对约束系统动力学方程缩聚求解。编制了计算机辅助分析通用程序CADACMS。     

利用图像处理技术自动评价超光滑表面的清洁度

讨论了利用计算机图像处理技术对精密抛光基片表面清洁自动评价的可能性、优点及应用前景.     

Computer-aided design of blank forging production facilities for aircraft engine compressor blades

The computer-aided design (CAD) system is specified for the preproduction engineering of the aircraft engine compressor blades. This system is characterized by a high quality of designing the finishing cutoff and reducing dies. It is shown that a high level of unification and integration in CAD permits the time of designing the punch tool sets to be significantly reduced.     

数字化民用飞机设计与制造构想

阐述了数字化制造概念和特点,从项目管理方式、构建数字化协同工作平台,开展精益生产研究、建设多种计算机辅助设计环境融合软件等方面进行了分析,并提出构想性建议.     

Compact AM Signals for Maximum Clutter Rejection

The transmitted signal is assumed to consist of a close succession of rectangular pulses of equal width. A matched filter scheme is employed and a theory is developed for a computer-aided optimization of the envelope of monotone compact signals for maximum rejection of dense clutter of any given distribution in range. Specific results are presented and indeterminate cases are discussed.     

文书立卷改革方法的选择

寻找一种能与计算机管理方式相适应的文书立卷方法，是当前档案 研讨的一个主题。本文认为，不立卷按时间排列消除了传统文书立卷方法弊端，是文书立卷改革的方向。     

计算机辅助管理技术在库房管理中的应用

介绍了 计算机辅助管理技术在工厂库房管理中的应用情况，侧重介绍了计划编制、智能专家系统、出入库处理、财务核算等等。     

航空发动机零件工时定额测算技术研究与实现

针对航空企业加工工艺的多样性,本文基于数学模型法提出工时定额测算中各种机加工艺的机加时间数学表达,并在此基础上构建了普通机床、数控机床ISO代码指令及宏指令的工时定额测算工具。该工具经应用验证,效果良好。     

复合材料构件模具材料选择模糊决策研究

为了实现复合材料构件模具材料的计算机辅助决策,在分析研究复合材料构件模具材料选择的知识和经验的基础上,运用加权多因素模糊模式识别技术,同时结合基于规则的推理（RBR）技术和权重动态调整技术,实现了具有一定自适应功能的复合材料构件模具材料选择模糊决策方法.实践表明,该决策方法能够很好地实现复合材料构件模具材料选用的快速智能化决策.     

航空发动机试车三分钟事件记录与回放

航空发动机试车计算机辅助试验系统中开发三分钟事件记录与回放功能可以为事后的分析提供数据依据。本文着重研究了事件模型的建立的一般方法,讨论了数据记录与回放的方法,最后给出了所采用的数据结果。根据本文所论述的方法,实现了该功能并已投入了某型航空发动机试车实验使用。      

A technique of computer-aided synthesizing a finite element model of wing center section and outer wing torsion box joint for a transport aircraft

A technique of synthesizing the finite element model of the flange joint of the outer wing torsion box with the wing center section for a transport aircraft is presented. The technique is based on the functional decomposition principle, in which the general model of wing torsion box is synthesized from the separate substructure models including the flange joint. It has been shown that the manual input is significantly reduced, when the computer-aided synthesis is applied. This made it possible to cut time of synthesis and decrease the probability of error occurrence.