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对自然环境尤其是东南沿海气候对航空装备的影响进行了分析,指出空气温度、湿度和盐雾是影响装备正常工作的主要因素,导致装备零部件老化、失效和高故障率。针对南方某机场在飞机维护工作中的探索,总结实践经验,提出了为改进和提高现有航空装备的环境适应性应采取的管理办法和技术措施,为我军布署在东南沿海地区的航空装备的使用维护提供了参考,为提高航空装备战备完好性、降低全寿命周期费用有重要意义。 相似文献
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近日,Ameco成都分公司与海南航空公司签订了5架空客A330-200型宽体飞机的定检及整机喷漆合同,另有2架宽体飞机的中型维修业务也正在进行最后的评估。据悉,该公司紧紧围绕国内各大航空公司对飞机大修业务的需求,开发了波音737全系列、波音757-200和空客A320全系列等窄体飞机的大修能力,以及宽体飞机空客A330-300型6C检和空客A340大修的能力,还形成了波音757-200飞机客改货、CFM56-7B/-3反推组件翻修、各型飞机整机喷漆、空客A320系列飞机旅客座椅翻修等具有高附加值的单产品维修能力,并与海南航空、深圳航空、四川航空、澳门航空、顺丰航空、春秋航空、邮政航空、成都航空、吉祥航空等国内外60余家航空公司建立了良好的合作关系。 相似文献
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结合航空电子火控系统组成和计算机仿真技术的发展,简要介绍了航电仿真系统的功能、目的、任务,并以某飞机系列改进型为实例介绍航电仿真系统的构成、功能和实施过程。 相似文献
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《航空世界》2014,(3)
<正>2013年8月,迪斯尼推出的全新电脑动画电影力作《飞机总动员》(英文原名《PLANFS》)在美国上映,这是《汽车总动员》系列电影的衍生作品。片中主角基本上都是飞机,很多飞机都是航空爱好者耳熟能详的机型,算得上是航空文化传播的典范之作。文化是一种社会现象和历史现象,是伴随着人类社会的发展以及某一领域的积淀传承产生的,是某一国家、地域、民族甚至是某个特定团体的人的发展历史、风俗人情、传统习惯、行为方式、处世准则,思考方式、价值理念、艺术品味等等。换句话说:某某文化就是包含这个领域的全部知识的总和!所以,航空文化的定义应该就是包含航空领域全部知识的总和,是能让热爱航空的人们感到共鸣,流连忘返如痴如醉的各种载体或者手段。电影《飞机总动员》汇集了很多航空领域的内容, 相似文献
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加速发展我国航空发动机事业 总被引:3,自引:1,他引:2
刘大响 《燃气涡轮试验与研究》2000,13(3):1-4
1 前言二十世纪,是航空飞速发展的时代,而航空发动机则是推动航空事业飞速发展的强大动力.半个世纪以来,我国航空工业取得了长足的进步,但在航空发动机方面却进展迟缓.30多年前周恩来总理就指出:我们的飞机得了"心脏病”.这种状况仍然延续至今.航空动力落后严重制约了我军航空装备的更新换代,已成为航空武器平台发展的"瓶颈”技术.因此,根治飞机"心脏病”,加速发展我国航空发动机事业,已势在必行、刻不容缓. 相似文献
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Industrial battery market segments generally fall into two major categories--traction batteries, also called motive power batteries; and stationary batteries, also referred to as standby power batteries. The major industrial battery subcategories are discussed. Industrial trucks and rail and mine vehicles represent two major subcategories of motive power batteries. Industrial trucks include forklifts, automated guided vehicles (AGVs), various types of towing vehicles, floor cleaning equipment and so forth. Battery-powered rail and mine vehicles are used in mines where gas is present that could be ignited by spark ignition engines. Locomotive starting batteries and railcar emergency power batteries are also included in the second subcategory. The distinction is beginning to blur between valve-regulated industrial batteries and golf cart or marine batteries. Both industrial and SLI(starting/lighting/ignition)-derivative batteries are competing for markets in the future. The future trends in industrial battery production in Japan, USA and Europe are discussed 相似文献
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The capability of lead-acid batteries for supplying very high power for a short time is explored. The application of such a battery for accelerating a hypersonic plane is used to illustrate the requirements. A technique for analyzing batteries and controlling voltage for pulse loads is described. Evaluation of lead-acid batteries in production and voltage regulation by switching batteries in and out are covered. Alternatives to batteries, including superconducting magnetic energy storage, are discussed 相似文献
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《中国航空学报》2020,33(5):1517-1531
As an emergency and auxiliary power source for aircraft, lithium (Li)-ion batteries are important components of aerospace power systems. The Remaining Useful Life (RUL) prediction of Li-ion batteries is a key technology to ensure the reliable operation of aviation power systems. Particle Filter (PF) is an effective method to predict the RUL of Li-ion batteries because of its uncertainty representation and management ability. However, there are problems that particle weights cannot be updated in the prediction stage and particles degradation. To settle these issues, an innovative technique of F-distribution PF and Kernel Smoothing (FPFKS) algorithm is proposed. In the prediction stage, the weights of the particles are dynamically updated by the F kernel instead of being fixed all the time. Meanwhile, a first-order independent Markov capacity degradation model is established. Moreover, the kernel smoothing algorithm is integrated into PF, so that the variance of the parameters of capacity degradation model keeps invariant. Experiments based on NASA battery data sets show that FPFKS can be excellently applied to RUL prediction of Li-ion batteries. 相似文献
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Electro Energy Inc. (EEI) is developing high power, long life, bipolar nickel-metal hydride batteries for aerospace applications. Bipolar nickel-metal hydride designs allow for high energy and high power designs with a 25 percent reduction in both weight and volume as compared to prismatic and/or cylindrical Ni-MH designs. Utilizing a sealed wafer cell design EEI has demonstrated a 1.2 kW/kg power capability. Prototype designs have achieved 70 Wh/kg. Designs studies show 80 Wh/kg are achievable with EEI's state-of-the-art technology. The sealed wafer cell is the building block for EEI's high power and high voltage bipolar batteries making the assembly easy and significantly lower in cost. Satellite and aircraft batteries are being developed which provide high power and long life. Sealed cells now show excellent rate capability and life. Cells tested in a low earth orbit (LEO) cycle have reached 9000 cycles and continue on test. High power, bipolar battery designs are ideal in applications where using conventional aerospace battery technology would require excessive capacity; weight and volume, thereby reducing usable payload on the vehicle 相似文献
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《Aerospace and Electronic Systems Magazine, IEEE》1995,10(4):14-19
The following topics are discussed: new batteries for old airplanes; new charge controls for lengthening battery life; fast methods for batteries charging; AC conductance measurement based battery testing; pulse power; bipolar lead-acid batteries vs supercapacitors; Ni electrode cells for spacecraft; worn-out battery disposal; recycling technology; vehicle batteries cost; high energy content batteries; and energy storage for electric utilities 相似文献
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Hamlen R.P. Christopher H.A. Gilman S. 《Aerospace and Electronic Systems Magazine, IEEE》1995,10(6):30-33
The purpose of this paper is to describe the needs of the U.S. Army for silent portable power sources, both in the near and longer term future. As a means of doing this, the programs of the Power Sources Division of the Army Research Laboratory are discussed. In carrying out these programs, the personnel of the Power Sources Division work closely with the Battery Management Office of the Army Materiel Command, which is located in the Logistics and Readiness Directorate of the Communication-Electronics Command (CECOM). We are also closely integrated with the Army Research Office, and the fuel cell personnel of the CECOM Research Development and Engineering Center (RDEC), and the battery personnel of the RDECs for the Tank and Automotive Command and the Missile Command. The six program areas discussed in which the Power Sources Division is engaged are: primary batteries, rechargeable batteries, reserve/fuze batteries, pulse batteries and capacitors, fuel cells, and thermophotovoltaic power generation 相似文献
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Jacobs R. Christopher H. Hamlen R. Rizzo R. Paur R. Gilman S. 《Aerospace and Electronic Systems Magazine, IEEE》1996,11(6):19-25
This paper describes the US Army's future needs for silent portable power in the area of batteries and fuel cells. These needs will continue to increase as a result of the introduction of newer types of equipment, the increasing digitization of the battlefield, and future integrated Soldier Systems. Current battery programs are aimed at improved, low-cost primary batteries, and rechargeable batteries with increased energy densities. The Army fuel cell program aimed at portable systems capable of the order of 150 W is also described 相似文献
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Selective buck-boost equalizer for series battery packs 总被引:1,自引:0,他引:1
To maximize the capacity and reliability of a series connected battery pack, a new selective equalizer developed from the earlier ramp equalizer is proposed. A set of bipolar junction transistors (BJTs) controlled by a microcontroller is used to route equalization current to the lowest voltage batteries. Since only the lowest voltage batteries are connected to the equalizer, the need for uniform transformer leakage inductance is avoided, and a lower power level can be used since no excess current flows to the other batteries. An equalization experiment has shown that a 37 W selective equalizer had a slightly better effect on a 24-battery pack than a 63 W ramp equalizer 相似文献
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This paper gives a review of the papers presented at the IEEE 17th Annual Battery Conference on Applications and Advances, Long Beach, CA, USA, 2002. The topics covered are: Li batteries for satellites, capacity fade of Li-ion cells cycled at different temperatures, Ni-H/sub 2/ battery lifetime, batteries for Mars-exploring vehicles, Li-ion cell performance enhancement at low temperatures, navy service batteries, and US Army man portable applications and mobile power challenges. 相似文献
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Since they were first introduced in the early 1990s, lithium ion batteries have enjoyed unprecedented growth and success in the consumer marketplace. Combining excellent performance with affordability, they have become the product of choice for portable computers and cellular phones. Building on the same energy and life cycle attributes, which marked their consumer market success, but adding new high power storage capability, lithium ion technology is now poised to play a similar role in the transportation, military, and space sectors. With major program in various aspects of electric and hybrid electric vehicles, Saft has developed a family of battery products that address the power and energy storage where lightweight, long life, and excellent energy or power storage capabilities are needed. Significant progress in the packaging and control of high power, yet compact, batteries has been accomplished for a variety of vehicle applications. This paper discusses the charger and balancing strategies of one of this family of products 相似文献