搜索结果: 1-13 共查到“工学 DME”相关记录13条 . 查询时间(0.156 秒)
A DME Based Area Navigation Systems for GPS/WAAS Interference Mitigation In General Aviation Applications
DME Based Area Navigation Systems GPS/WAAS Interference Mitigation Aviation Applications
2015/6/29
The Federal Aviation Administration is leading the National Airspace System modernization e ort, in part by supplanting traditional air trac services with GPS aided by the Wide and Local Area Aug- me...
DME/TACAN Interference and its Mitigation in L5/E5 Bands
DME/TACAN Interference its Mitigation L5/E5 Bands
2015/6/25
The Galileo E5a/E5b signals and the GPS L5 signal lie within the Aeronautical Radionavigation Services (ARNS) band. They suffer interference from the services in this frequency band, in particular, hi...
Acquisition and Tracking of GIOVE-A Broadcast L1/E5/E6 Signals and Analysis of DME/TACAN Interference on Receiver Design
GIOVE-A Broadcast L1/E5/E6 Signals DME/TACAN Interference Receiver
2015/6/25
This paper demonstrates the tracking and acquisition of GIOVE-A broadcast L1/E5/E6 signals of the Galileo system using a multi-signal all-in-view software receiver. We show that existing aeronautical ...
Alternative Position Navigation & Timing (APNT) Based on Existing DME and UAT Ground Signals
Position Navigation Timing (APNT) Based Existing DME UAT Ground Signals
2015/6/24
The United States (US) Federal Aviation Administration (FAA) is developing alternative position navigation and timing (APNT) technologies to maintain efficient and safe operations even with a degradat...
Containing a Difficult Target: Techniques for Mitigating DME Multipath to Alternative Position Navigation and Timing (APNT)
Containing Difficult Target Techniques Mitigating DME Multipath Alternative Position Navigation Timing (APNT)
2015/6/24
Distance measuring equipment (DME)/Tactical Air Navigation (TACAN) has been serving aviation for approximately 60 years. It has been a primary navigation aid in the national airspace (NAS) for much of...
Production of dimethylether (DME) as a clean fuel using sonochemically prepared CuO and/or ZnO-modified γ-alumina catalysts
ultrasonication methanol DME &gamma -Al2O3 CuO ZnO
2014/3/24
The catalytic conversion of methanol to dimethylether (DME) was studied over CuO/Al2O3, ZnO/Al2O3 and ZnO-CuO/Al2O3 nanocatalysts prepared in presence or absence of ultrasonic irradiation. The catalys...
中国民航飞行学院空中领航课件 VOR/DME领航方法
中国民航飞行学院 空中领航 课件 VOR/DME领航方法
2013/11/26
中国民航飞行学院空中领航课件 VOR/DME领航方法。
中国民航飞行学院空中领航课件 VOR/DME区域导航
中国民航飞行学院 空中领航 课件 VOR/DME区域导航
2013/11/26
中国民航飞行学院空中领航课件 VOR/DME区域导航。
温度对柴油和二甲醚喷射系统性能的影响（Comparison of Diesel and DME Injection System Performances at Different Temperatures）
喷射系统 温度 柴油 二甲醚
2009/8/11
针对普通油泵—油管—油嘴燃油系统，建立了喷射系统的数学模型。对不同温度下柴油和二甲醚喷射系统性能进行了数值模拟。研究表明：在相同温度下，二甲醚喷嘴压力的上升和下降速率、压力峰值都比柴油低，20℃时二甲醚较柴油下降51.1%，50℃时较柴油下降45.2%，喷射速度和累积喷油量均远低于柴油，针阀开启时刻较柴油明显延后；在最大速度点，20℃和50℃时二甲醚分别较柴油下降38.8%和36.8%。随着温度的...
Research and Development towards Utilization of DME Powered Diesel Engines
Diesel engine Alternative fuel Performance Standard
2009/8/4
Evaluation of lubricity used newly developed equipment to evaluate the effects of lubricity improvers. Checking the correlation between the durability of the injection pump and lubricity on fuel, and ...
基于离散小波变换的二甲醚HCCI爆震试验（Experimental Analysis of Knock in a DME HCCI Engine Using Discrete Wavelet Transform）
二甲醚 均质压燃 爆震
2009/5/22
在一台由柴油机改造为二甲醚进气道喷射的发动机上，用离散小波变换分析正常燃烧工况、爆震工况的缸内压力，计算其在各尺度细节部分的能量特征值，研究二甲醚HCCI燃烧的爆震特性。结果表明，正常燃烧工况、爆震工况缸内压力的能量特征值分布具有明显的规律。正常燃烧工况时，细节部分D3的能量特征值最大；爆震工况时，细节部分D1的能量特征值最大。转速升高或进气道喷射燃料添加LPG对正常燃烧工况、爆震工况缸内压力能量...
Aiming at commercialization of DME
DME dimethyl ether fuel natural gas synthesis slurry catalyst
2009/5/7
Dimethyl Ether (DME) is a clean and economical alternative fuel which can be produced from various resources as natural gas, coal or biomass through synthesis gas. The properties of DME are similar t...
DME-CO2-CH3OH和DME-CO2-C2H5OH体系的高压汽液相平衡研究
phase equilibria model reduction dimethyl ether phase diagram
2009/3/26
In this study, the Gibbs-Duhem equation was applied to make the thermodynamic consistency test and thermodynamic model estimation for systems of CO2-DME (dimethyl ether), DME-CH3OH, CO2-CH3OH and DME...