民用飞机机体维修企业排行榜

世界航空维修企业在上一个市场周期中触底反弹，获得相对成功。开业和停业、发展和停滞、战略转移和联合重组等因素，对维修市场产生较大的影响。     

Modeling Piecewise-Linear Systems by Topological Techniques

Flowgraph techniques are extended to systems with piecewise-linear characteristics by developing criteria for construction of an optimum model from related subregions in which linearity holds. This requires the synthesis of several known techniques and results in a wide range of useful applications including: 1) devices with nonlinear characteristics which may be considered as linear over certain subregions; 2) networks whose response to changes in applied signal frequency or magnitude may be approximated by piecewise-linear asymptotes; 3) systems processing two or more signals simultaneously with different transfer or immitance characteristics for each signal; 4) circuits approximated by different equivalent circuits depending on the numerical values of critical parameters. Representative examples will illustrate these and similar applications. Procedures are presented to provide a logical, orderly, and effective approach to construct a model, to determine figures of merit, and to optimize the model for a prescribed region of operation or for a desired range of parameters.     

全球十大机体维修供应商

相据O＆M杂志的最新调查,新加坡科技宇航公司在2008年以800余万工时数继续位居全球十大机体维修供应商的榜首.但其他公司的排名却发生了较大的变化.     

Electrical power distribution on space based radar satellites

The radar payload on a space-based radar (SBR) satellite could require tens of kilowatts of power distributed to many small loads over a large area. This poses special problems for the power distribution and control system (PDCS). A study that examined the power requirements of an SBR spacecraft is reported. A baseline prime power system, generating about 30 kW, was derived. The proposed distribution network would transmit 240 V at 20 kHz. The voltage would be downconverted in one converter for about 100 transmit/receive modules. The design considerations are discussed, and the baseline PDCS is described     

低成本航空公司对维修业的影响

低成本航空公司的日渐繁荣,给航空维修业带来的既是机遇又是挑战。众所周知,低成本航空公司(LCC)的机队规模通常较小,机队的售后服务市场相对简单,而且多数是航空公司自给自足。而现在,低成本航空公司的规模经济似乎为MRO供应商带来了发展机会。     

普惠静洁发动机售后服务计划

今年4月，普惠公司在航空周刊举办的MRO2011会展上，正式推出了针对静洁动力PW1000G的PureSolution计划。该计划进一步增加了普惠公司拓展售后服务市场的战略。普惠公司把自己定位为OEMRO，是能够对产品提供设计和诊断服务的制造商。PW1000G是普惠公司近年来推出的首款全新的发动机。     

创新型“蓝弧”技术

众所周知，航空发动机的工作环境非常苛刻，作为其中的重要部件之一，叶盘更是需要长期工作在1500℃左右的高温高压环境中，所以该部件通常采用铬镍铁高温合金Inconel718制造，但依靠传统的计算机数控机床对其进行加工，     

窄体飞机C检

受窄体飞机需求增长,全球C检业务呈增长趋势。C检是指飞机每18～24个月所需执行的为期3～5天的机体结构维修。近年来,全球范围内的飞机C检正随着机队的增长呈上升趋势。根据MRO Prospector统     

碳刹车在波音737机队的应用

<正>碳刹车可以为航空公司节省运营成本,但在实际应用中需要考虑其后勤保障问题。碳刹车因为更轻的重量和更长的寿命期可以节省成本,由此吸引了一些航空公司在其运营的波音737NG改装了碳刹车装置。     

客舱内饰翻新的发展趋势

公务机运营商和民用航空公司部需要经过优化的客舱内饰改装包,其中包括使机载娱乐系统具有更好的连通性和更具时尚的内饰等.二者的差别是公务航空不会因为飞机减重而牺牲其舒适性.