A large flat panel multifunction display for military and spaceapplications

A flat panel multifunction display (MFD) that offers the size and reliability benefits of liquid crystal display technology while achieving near-CRT display quality is presented. Display generation algorithms that provide exceptional display quality are being implemented in custom VLSI components to minimize MFD size. A high-performance processor converts user-specified display lists to graphics commands used by these components, resulting in high-speed updates of two-dimensional and three-dimensional images. The MFD uses the MIL-STD-1553B data bus for compatibility with virtually all avionics systems. The MFD can generate displays directly from display lists received from the MIL-STD-1553B bus. Complex formats can be stored in the MFD and displayed using parameters from the data bus. The MFD also accepts direct video input and performs special processing on this input to enhance image quality     

Synthetic vision: a prototype display concept for commercial aircraft

The synthetic vision implementation discussed in this paper comprises elements in the navigation display, the vertical profile display, and the primary flight display. The design rationale is provided based on an overview of the intended functions, options to implement these functions, and the justifications used in the selection of a specific option.     

New ATC requirements phasing in preparation for the C-17 GATM/NAV safety functions to meet civil requirements

For the next 10 years new worldwide communication, navigation, and surveillance (CNS) requirements are being incrementally imposed upon commercial aircraft avionics, and upon the Air Traffic Control community, by the Aviation Administrations of most nations, including the FAA and the JAA. These requirements are the result of a decade of study by the United Nations' International Civil Aviation Organization (ICAO) to improve aviation safety and efficiency. In 2001, the USAF mandated compliance to the CNS requirements for its military aircraft, which is called Navigation Safety/Global Air Traffic Management (NS/GATM) by the USAF. By complying with these requirements, the C-17 will maintain its ability to fly internationally without CNS restrictions, such as requiring special handling. The Phase I study reported herein is the first phase of a three-phase study effort that will result in the C-17 achieving NS/GATM compliance for a specific set of NS/CNS requirements.     

一类非线性系统自适应神经网络块控制器设计

对一类多输入多输出非线性系统,提出了一种基于块控原理自适应控制器设计方法.利用反演设计技术和RBF神经网络设计了控制器,并通过引入改进的Lyapunov函数,成功地避免了在控制函数矩阵未知情况下的自适应控制奇异问题.利用Lyapunov稳定性定理证明了系统的所有信号均有界.最后的仿真研究表明了该设计方法的有效性.     

The J-MASS Marketplace: a new way for DoD to do business

It is current DoD policy to use commercial off-the-shelf software whenever it meets DoD requirements. The application of this policy to modeling and simulation has resulted in the concept of “The Joint Modeling and Simulation System (J-MASS) Marketplace.” J-MASS is designed as an Open Systems Architecture with the capability for the Simulation Support Environment (SSE) to be expanded by the addition of site specific software. In the “J-MASS Marketplace” industry will build commercial tools to work with J-MASS and individual organizations will license what they need for their particular site. The J-MASS SSE is a framework or backplane into which everything else plugs. A J-MASS product release would have the core capabilities, but the unique needs of various organizations would be satisfied by industry. This paper addresses how the J-MASS Marketplace could work and how compliance can be defined. It will outline opportunities for industry in both building software for the Marketplace and in defining the Marketplace concept     

CFD评估框架的进展及其最佳实践: QNET-CFD知识库

QNET—CFD是欧盟R＆D项目开发的一个主题网络，该网络讨论了计算流体力学（CFD）供工业应用应具有的品质和可信度，其主要目的是以系统和质量控制的方式收集CFD和实验数据，建立两者相容的知识库（KB），以此为基础，支持对CFD进行指导和评估。QNET—CFD围绕覆盖下述工业部门的6个主题（TA）组成：外流空气动力学；燃烧和传热；化学过程、热水力学和核安全：土木建筑和HVAC；环境；涡轮机内流。其主要成果是建立了具有面向用户界面及丰富的实验和CFD数据的知识库，这些数据来自于大量实验数据，分为53种应用挑战（AC）和43种基本流动状态（UFR）。除对上述6个主题领域中每一个的科学发展动态给出述评外，KB还包含了对大多数应用挑战如何利用CFD的最实际的建议，这被视为QNET—CFD最有意义的贡献，CFD的可信度和质量水平将因此得以进一步提高。     

从计划到规划：宏观经济管理手段的逻辑建构

通过对计划和规划概念上的比较分析,对市场经济条件下规划存在的必要性进行了探讨,并给予了肯定回答.在市场经济条件下规划具有经济宪章、促进经济社会协调发展、遏制政府失灵、构建经济伦理四个方面的作用,从而为规划作为宏观管理的重要手段建立了一个有解释力的逻辑框架.     

The future of military radar: a perspective

This paper describes a perspective of military radar development. The foreseen configuration of radar systems in the first part of the 21 ^st century is proposed. The avenues of radar evolution and the expected occurrence of technological breakthrough are discussed     

Radar History: The Need for Objectivity

The shortcomings of sources of historical accounts of radar are discussed. It is believed that an objective account of its technological evolution would be of benefit to students presently entering aerospace engineering.     

信息服务软件开发设计

本文介绍了一种准网络远程终端结构的设计实现,该结构的系统用于新闻信息发布,情报检索等应用领域,文中详细介绍系统的结构、性能、特征、具体实现方法和关键技术措施。     

MICA: The Mirror Coronagraph for Argentina

As part of the new German-Argentinian Solar Observatory in El Leoncito, San Juan, Argentina, a new ground-based solar telescope (MICA) began to operate in August 1997. MICA is an advanced mirror coronagraph, its design being an almost exact copy of the LASCO-C1 instrument. Since its installation, it has been imaging the inner solar corona (1.05 to 2.0 solar radii) in two spectral ranges corresponding to the emission lines of the Fe XIV and Fe X ions. The instrument can image the corona as fast as every minute. Thus, it is ideally suited to study fast processes in the inner corona. In this way, it is a good complement for the LASCO-C1 instrument. After a brief review of the instrument, we present some recent observations showing the capabilities of the instrument. This revised version was published online in June 2006 with corrections to the Cover Date.     

The Radar Support System (RSS): a tool for siting radars andpredicting their performance

The Radar Support System (RSS) is a software tool for assisting the radar siting engineer in determining the best location for a sensor, evaluating performance in a site-specific environment and analyzing operational problems. The RSS uses detailed sensor models, along with digital topographic, land cover and cultural databases, to provide accurate performance predictions. The RSS is currently being used by the FAA to assist in their sensor deployments and analyses     

Open Systems: a process for achieving affordability

A major factor that will drive the definition and design of future avionics systems is affordability. Affordability is being addressed on numerous fronts such as hardware re-use, software re-use, COTS leveraging, and reduced cycle times. Each of these thrusts provide potential cost saving along with unique challenges. What is needed is a process that integrates these initiatives while ensuring the overall system objectives are achieved. An Open Systems-based process is key to integrating these initiatives and balancing affordability and system performance goals. Although Open Systems are being widely recognized as a key to affordability, most interpret Open Systems as a set of system attributes that need to be achieved. There are numerous claims of vendors saying they have an Open Systems architecture; or how their system will evolve to an Open Systems architecture. This emphasis is not on increasing affordability, but on attaching a politically-correct label to their product. In this paper, we focus on the Open Systems process as the key to affordability. An Open Systems process is based on Open Systems principles. This paper discusses the Open Systems principles and process in detail and shows how this process integrates numerous affordability initiatives     

The Acquisition Probability for a Minimum Distance One-Class Classifier

An approximation for the acquisition probability for a minimumdistance one-class classifier is derived. An exact expression for theacquisition probability is dependent upon the operatingcharacteristics in the distance space, the number of targets detected,and the number of other objects detected. An approximateexpression replaces the operating characteristics curve by a singlepoint. Experimental results are presented to demonstrate thevalidity of the approximation. Combinatorial techniques can be usedwhen only the total number of objects detected is known. All ofthese results can be extended to include the multitarget, multipleshotcase.     

The flying object: a flight data management concept

The drive for greater cost-effectiveness and improved safety/security in an environment of increasing air movements calls for improved availability of accurate and consistent flight data to stakeholder systems. Studies conducted by EUROCONTROL in 2001-2003 indicate significant levels of inconsistency between flight data available to aircraft operators, air traffic control (ATC), air traffic flow management (ATFM), airports and military systems, causing unnecessary workload, inefficient use of resources, and unnecessary delays. Eurocontrol's new flight data interoperability concept is intended to resolve this problem. Having passed through the initial feasibility phase, this concept is now entering the development phase, in which it will become the basis for the development of a draft interoperability standard to be used in Europe for the specifications of new flight data processing systems deployed from 2007 onwards, and potentially to be proposed to the International Civil Aviation Organisation (ICAO) for global standardisation.     

江苏金陵机械制造总厂:在科学修理道路上不断前行

江苏金陵机械制造总厂是一家隶属于空军的机载设备修理工厂。建厂60多年来,始终坚持以军为本,航修为主的发展方向,在空军航修系统中率先走出了一条修、造、研、改、教相结合的发展新路。在装备保障模式快速转型的今天,江苏金陵机械制造总厂以深修精修为基础,在科学修理道路上不断前行。     

一种新型压电陶瓷驱动器电源设计

设计并研制了一种新型压电陶瓷驱动电源。该电源采用高压直流放大器加功率放大器原理,具有良好的动态响应性能,能很好地满足微细电火花加工的伺服要求。     

ARJ21：请不要叫我“支线”

ARJ21作为我国首次自行研制并拥有自主知识产权的喷气飞机。一直以来都被认为属于“支线”飞机范畴。但中航商用飞机有限公司陈进副总经理在接受本刊记者专访时特别提出,ARJ21是区域航空市场的最合适机型,但已不是传统意义上的“支线”飞机。     

The impact of airline alliances on European airports: : Infrastructures,a problem with a solution

On the occasion of the 10th ACI Europe Annual Assembly in Rome, in June 2000, the President of the AEA, Xabier de Irala, gave a speech about the impact of Airline Alliances on European Airports, focusing on infrastructure problems.     

POWOW: power without wires: a SEP concept for space exploration

Electric propulsion has emerged as a cost-effective solution to a wide range of satellite applications. Deep Space 1 successfully demonstrated electric propulsion as the primary propulsion source for a satellite. The POWOW concept is a solar-electric propelled spacecraft capable of significant cargo and short trip times for traveling to Mars. It would enter aerosynchronous orbit and from there, beam power to surface installations via lasers. The concept has been developed with industrial partner expertise in high efficiency solar cells, advanced concentrator modules, innovative arrays, and high power electric propulsion systems. The latest version of the spacecraft, the technologies used, and trip times to Mars are presented. The POWOW spacecraft is a general purpose solar electric propulsion system that uses new technologies that are directly applicable to commercial and government spacecraft with power levels ranging from a LEO power level of 4 kW up to GEO spacecraft about 1 MW. The system is modular, expandable, and amenable to learning curve cost projection methods