《飞机液压与燃油系统》课程建设研究

《飞机液压与燃油系统》是中国民航大学飞行器制造专业的专业课和核心课,是飞机系统课程群的主干课程之一。该课程与课程群内的其他课程的内容联系紧密,但也存在重复等问题。在目前专业课总课时限制的条件下,对整个课程体系进行分析研究,以优化教学内容,结合《飞机液压与燃油系统》课程建设提出改革方案。     

Aerobasics — An introduction to aeronautics

Modern aircraft are designed for the utmost in performance and safety as the penalty for any shortfalls in these areas is very heavy. Thus they incorporate many complex systems and subsystems, each developed using advanced scientific concepts and manufacturing methods. Aircraft design is undertaken by a group of design engineers, each with a specialized knowledge about a few subsystems but only a rough understanding of the whole aircraft. This rough overall understanding of the concepts and principles based on which an aircraft is organized is a vital element of a design engineer’s toolbox. It helps him perform his own specialized task such that it fits in the complete design seamlessly. This comprehensive knowledge is not easily acquired from modern technical literature which is voluminous and primarily caters to special interest groups. An attempt has been made here to gather this knowledge and present it concisely as a series of articles, so that it will serve as a broad general introduction to aircraft engineering. This material should be useful not only to fresh engineers entering the aeronautical industry but also to students in all relevant branches of engineering. It is also likely to be of general interest to any scientifically inclined reader as a source of basic information in a number of aeronautical disciplines. The general philosophy adopted here is best summarized by the following quote from the Panchatantra: “Knowledge indeed is unlimited, but life is short and there are many obstacles to the acquisition of knowledge. Therefore one must grasp the essential knowledge leaving out much detail ….”     

《飞机复合材料结构修理》课程教学探讨

《飞机复合材料结构修理》是飞行器制造工程（飞机维修方向）专业的一门专业技术课程。本文归纳出了该课程提高教学质量的几点思路：合理选择教学内容,案例教学、视频教学与现场参观相融合和重视实验教学。这对调动学生的学习情趣,提高教学质量都有很大的帮助。     

Aerobasics — An introduction to aeronautics 2. The atmosphere

Aircraft of all types dynamically interact with the atmosphere generate forces required for lift and propulsion. Properties of the atmosphere and their variations over geographic locations and altitude are thus relevant to aircraft flight operations. This article presents some facts about the atmosphere and indicates their relevance to flight.     

基于故障树的飞机氧气系统可靠性仿真研究

飞机氧气系统是飞机的重要组成部分,其可靠性的高低对飞行安全至关重要,使用故障树方法对其进行了定性分析,在此基础上用蒙特卡洛仿真方法进行了仿真计算,得出氧气系统的可靠度。结果表明,把蒙特卡洛用于飞机氧气系统的故障树分析是切实有效的。     

飞机方向舵剩余强度试验方法研究

介绍了飞机方向舵雷击后剩余强度试验方法。试验件为飞机复合材料方向舵全尺寸部件。方向舵结构由复合材料层压板、复合材料面板NOMEX蜂窝芯夹层结构及金属结构件组成。该试验利用国际先进的MTS多点协调加载系统进行双通道高精度协调加载,并利用集成的VXI1629数据采集模块自动进行同步数据采集。试验方案科学合理,试验加载精度达到0.4%满量程以内,试验方法可为其他大型结构部件静力试验提供参考。     

某耐腐蚀铝合金应用试验研究

对某耐腐蚀铝合金在飞机结构上应用的可行性进行了试验研究,选取飞机某部位全尺寸结构进行了静强度试验鉴定,结果表明,该新研耐腐蚀铝合金结构能够满足飞机设计使用要求,从而为新材料在飞机上的替代给出了可靠的试验依据。     

Improving the wind and temperature measurements of an airborne meteorological measuring system

The Aircraft Integrated Meteorological Measuring System 20 Hz(AIMMS-20) has been used by the Hong Kong Observatory(HKO),China in data collection for tropical cyclone situations over the South China Sea and windshear and turbulence measurement at the Hong Kong International Airport(HKIA).This paper discusses possible methods for further enhancing the quality of the wind and temperature measurements from the system.For wind measurement,the enhancement methods include:error modelling of the accelerometer(e.g.,bias offset and cross-axis rate sensitivity),global positioning system(GPS) phase lag consideration,better representation of the inertial measurement unit(IMU) velocity based on the GPS velocities and considering their location differences,consideration of the slower update of GPS velocity,and wing flexure.For temperature measurement,the methods include the consideration of the temperature sensor response and the sensor housing response.The results of typical flights using AIMMS-20 show that the accuracy of the wind and temperature data could be improved by 20%-30%.Though the discussion in the present paper is related mainly to a specific meteorological measuring system on a particular aircraft,the techniques so employed should be a useful reference for similar systems installed on other aircraft.     

一种高性价比A/D、D/A转换电路的实现

介绍了一种用于小型飞行器数据采集和信号处理系统的多通道A／D、D／A转换电路；并采用性价比较高的ADC、DAC芯片，给出了电路设计和详细工作过程．针对小型飞行器电磁环复杂的情况，采用了新的设计方案，提高了电路的转换精度和系统的可靠性；在电路板设计中采用了适当的措施，增强了电路的抗干扰能力．实验证明，该电路能够满足飞行器系统要求．     

论高校学生党员的培养

高校学生党员培养和发展中普遍存在"重发展、轻培养"现象,高校基层党支部应在学生党员发展对象的培养过程中严格把关,使之符合入党要求,为党和国家输送可靠的建设者和接班人。     

小学科学课堂教学模式的有效性研究与实践——以小学科学《七色光》教学片断设计为例

文章针对小学科学课堂教学的现状与小学科学课堂教学的特殊性,结合新课程条件下小学科学教学的目标、理念和课堂教学设计有效性的要求,以小学科学《七色光》这一具体的教学内容片断为对象,探索小学科学课堂教学设计的有效性策略和实施途径。提出了＂五步-四层＂的课堂教学模式。     

大型民机系统纵向Nz控制律设计

针对国内民机系统纵向稳定性较差、飞机纵向短周期模态响应稳定性不足等问题,以某大型民机为研究对象,基于特征结构配置方法,利用逆模型的思路确定控制系统前馈增益系数,并基于某典型配平状态点,利用线性模型设计该飞机纵向控制律。线性仿真分析中,利用俯仰角速率q响应准则评价控制方案效果。仿真结果表明,采用特征结构配置方法设计的纵向飞行控制律具有良好控制效果,可以改善系统飞行品质使其达到一级飞行品质要求,相比于经典控制理论,通过特征结构配置方法进行纵向Nz控制律设计可以一次性确定反馈增益系数,缩短控制律设计时间。     

机务部队复合型航空维修人才培养探究

航空维修人员能力素质决定飞机维修保障的质量,影响飞机的完好率、可靠性和安全性,甚至直接影响战争的胜败。随着大量新型航空装备不断列装海军航空兵部队,以及战训任务拓展和部队实战化训练水平与强度的提高,不仅对维修人员的能力素质提出了更高要求,也为部队开展业务培训和复合型维修人才培养提供了有利机会,使得部队在维修人才培养方面发挥着越来越重要的作用。文章依据高技术条件下航空维修保障对人员能力素质要求,在系统分析机务部队在业务培训和人才培养方面存在问题的基础上,紧密结合部队实际,研究提出部队在复合型航空维修人才培养方面的方法建议。     

Virtual design and performance prediction of a silencing air cleaner used in an I.C. engine intake system

INTRODUCTION The primary function of an intake system is firstly to efficiently channel fresh air to the engine,and secondly to minimize intake noise emissions.There are a number of current approaches for devel-oping a more realistic method to improve intake sys-tem design.The objectives include more effective silencing performance to meet increasingly severe legislative targets for reduced noise on the one hand,with optimized engine performance and fuel economy accompanied by improvements…     

VDS-A01客车前空气悬架参数计算

以VDS-A01客车前空气悬架为研究对象,充分考虑了其他系统和外界条件对悬架计算结果精度的影响,计算了前空气悬架的刚度、固有频率和侧倾刚度,计算结果与实验结果相对偏差在3％以内,计算结果满足设计要求.该参数计算方法对客车空气悬架开发与设计具有良好的借鉴意义.     

机械设计制造及其自动化发展方向分析

随着社会发展水平的提升,机械设计制造行业在我国得到了快速的发展。在我国,相关部门对机械实际制造要求极为严格,相关的要求也较为细致。例如,在设计、选材等方面都严格把关,在加工过程等环节也是如此。在工艺设计环节中,更要注重细节,因为这一环节是最为重要的。为此,本文针对机械设计制造及其自动化发展进行相应的研究。     

基于故障分析的A320系列飞机空调系统故障研究

文章在介绍飞机空调系统工作原理的基础上,针对飞机空调系统故障频发的问题,以A320系列飞机空调系统2002、2004和2005年统计的故障数据为依据,分析得出A320系列飞机空调系统频发故障的主要部/附件,并且列出空调系统发生故障时的现象。这种方法有助于工程人员快速地获得发生故障的部/附件,及时进行维修或者更换,提高飞机空调系统使用的可靠性和安全性。     

教育信息化2.0背景下的课堂教学改革探究——以“飞机结构修理实训”课程建设为例

在教育信息化2.0的计划背景下,以本校飞机结构专业的课程“飞机结构修理实训”为研究对象,展开了信息化课程设计和建设,并进行有效的课堂教学改革,尝试通过信息化课程改革提高课堂教学成效。     

执政与民主的法治化

在中国共产党领导下,坚持依法执政,依法民主,即执政与民主的法治化,是坚持党的领导、人民当家作主和依法治国有机统一的基本思路。这是中国共产党历史地位与历史任务转变的历史选择,这是中华人民共和国依法治国的必然选择,这是党的建设的内在要求,这是人民当家作主的具体体现和实现方式,这是中国现实、国情赋予中国共产党的历史使命。     

高频地波雷达在海洋领域中的若干应用

本文简要介绍了高频地波雷达的工作原理和在海洋经济开发、灾害预报和科学研究等若干方面中的应用,分析讨论了我国开展高频地波雷达及其应用研究的必要性和可行性.