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环境谱
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  environmental spectrum
     Vibration/Temperature Data Processing and Program Design of Environmental Spectrum for Aircraft Airborne Equipment
     飞机机载设备振动/温度环境谱数据处理与程序设计
短句来源
     Engineering method on establishment of local environmental spectrum for military aircraft structure
     军用飞机结构局部环境谱编制的工程方法
短句来源
     The achievement has been successfully applied to the vibration/temperature data processing of environmental spectrum for JL8 and Y7G aircraft airborne equipment. It has achieved great economic benefits and social effect.
     本文所进行的飞机机载设备振动/温度环境谱数据处理研究成果,已成功地应用于JL8型教练机和Y7G飞机的机载环境谱数据处理工作之中,取得了一定的经济效益和社会效益。
短句来源
     NET is used in the programming of data processing application. Combining the programming step of the software engineering, this paper has finished the systematic module design of the environmental spectrum data processing.
     NET,结合应用软件工程的步骤,实现开发完成了机载设备振动环境谱数据处理和包络系统模块设计,在原有SmartDSP系统基础上,增加集功率谱分析、包络、显示于一体的振动环境谱分析处理系统模块。
短句来源
     RESEARCH OF ENVIRONMENTAL SPECTRUM FOR AIRCRAFT STRUCTURE
     飞机结构环境谱初探
短句来源
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  environment spectrum
     Research and application of compilation of load/environment spectrum for aircraft
     飞机载荷/环境谱编制研究及应用
短句来源
     Study on the Ground Corrosion Environment Spectrum of Warcraft
     军用飞机地面腐蚀环境谱的研究
短句来源
     An operational environment spectrum of N5A air- craft is compiled with the method.
     利用该方法编制了N5A飞机使用环境谱
短句来源
     To evaluate the calendar life of aircraft structure,an accelerated corrosion test environment spectrum for the critical aircraft component is presented,and the equivalent accelerated relation between the accelerated corrosion environment spectrum and serve time of aircraft structure is established. This method has been successfully used for evaluating the service life of a fighter aircraft.
     为进行飞机结构日历寿命体系评定,针对某型飞机机体结构内部腐蚀关键部位,对其加速腐蚀试验环境谱进行了研究。 提出了适用于内部结构腐蚀关键部位的加速腐蚀试验环境谱,并进行了加速腐蚀试验,采用腐蚀程度对比法确定了加速腐蚀试验环境谱与实际飞机使用环境之间的当量关系,并已成功地将其应用到歼X型飞机机体结构的日历寿命评定中。
短句来源
     First of all it must be decided which environmental factors significantly influence the corrosion of composites. After a series of corrosion tests,some significant factors influencing the mechanical properties of composite were found. According to the principles of establishment and the results obtained,the environment spectrum of this region was established.
     通过一系列老化腐蚀试验确定环境因素中对碳纤维增强树脂基复合材料力学性能影响显著的因素,并在此基础上,根据特定地域气象资料,对诸环境因素中对复合材料腐蚀行为影响较为显著的因子进行筛选、分析,依据一定的编谱原则,编制该地域的环境谱
短句来源
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  environment spectra
     The equivalent environment spectra and the load-environment spectra of N5A aircraft have been compiled.
     利用该方法编制了N5A飞机当量环境谱和载荷-环境谱
短句来源
     The method is of general usage and engineering application. It can be used for compiling operational environment spectra of different type aircraft.
     该方法具有通用性和工程实用价值,可用它编制各种飞机的使用环境谱
短句来源
     In this Paper the Concept and Classification of aircraft load-environ- ment spectra are stated and compiling method of the spectra put out. Compiling procedure of aircraft equivalent environment spectra is mentioned.
     介绍了飞机载荷-环境谱的概念和分类,提出了飞机载荷-环境谱的编制方法,阐述了飞机当量环境谱的编制步骤。
短句来源
  “环境谱”译为未确定词的双语例句
     THE COMPILATION OF AIRCRAFT LOAD-ENVIRONMENT SPECTRA
     飞机载荷-环境谱的编制
短句来源
     Data Processing and Compilation of Vibration Environmental Spectrumfor Aircraft Airborne Equipment
     飞机机载设备振动环境谱的数据处理与编制
短句来源
     The paper presents a method to determine an aircraft calendar life. On the basis of the method, all types of aircraft throughout the country are divided into several areas. According to the corrosion environment, a corrosion spectrum is drawn up in each area.
     给出一种飞机结构日历寿命的区域定寿法 ,该方法根据腐蚀环境的差异 ,把全国各型飞机划分成若干个区域 ,分别编制出每个区域的腐蚀环境谱 ,然后用每个区域的腐蚀环境谱 ,分别进行该区域中的各种机型飞机的日历寿命确定 ,这与飞机疲劳寿命确定方法有较大不同。
短句来源
     This paper researches the S N curves of aluminum alloy LY12 CZ under the constant amplitude loading after the corrosion of different equivalent calendar years.
     本文研究了在加速腐蚀当量环境谱作用后 ,LY1 2 -CZ铝合金材料的 S-N曲线随日历年限的变化规律。
短句来源
     Secondly the fatigue test is carried out under the constant amplitude cyclic loading for the specimens which are exposed in the corrosive environment for equivalent calendar time of zero year, 3 years, 8 years and 13 years. Four S-N curves with different corrosive time are obtained based on the fatigue experiment.
     (2)完成了在当量加速环境谱下预腐蚀日历年限0年、3年、8年和13年的腐蚀试验,并进行了成组常幅疲劳试验,得到了不同预腐蚀年限下的S-N曲线;
短句来源
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  environmental spectrum
Having obtained this, we turn to a specific model in which the influence functional can be exactly evaluated in a long-time limit (long compared to the inverse of the cutoff frequency of the environmental spectrum).
      
This assembled representatives from across the environmental spectrum and indicated the potential for continuing success.
      


According to the strength and rigidity specificaton and structural integrity program, it is necessary to verify the structural integrity of airplane structures under climatic/chemical/thermal environments. This paper presents the definition of the environmental spectrum and the basic methods of how to draw up the spectrum. The distribution of the total climate/chemical environment and the variational law with respect to time are investigated. The total environments for various climate regions and typical flying...

According to the strength and rigidity specificaton and structural integrity program, it is necessary to verify the structural integrity of airplane structures under climatic/chemical/thermal environments. This paper presents the definition of the environmental spectrum and the basic methods of how to draw up the spectrum. The distribution of the total climate/chemical environment and the variational law with respect to time are investigated. The total environments for various climate regions and typical flying regions of aircraft are statistically analyzed, and the observed data, including atmosphere temperature, air humidity, solar-radiation, sulphur dioxide, seawater salinity and salt fog etc, are provided. All of these investigations can be used for structural integrity test under environmental spectrum and for reference of environmental research.

本文给出环境谱的定义及编谱的基本方法。对总体气候/化学环境因素的分布和随时间变化的规律进行了探讨。统计分析了我国各气候区和飞机典型使用地区的总体环境,提供了气温、湿度、太阳辐射、二气化硫,海水盐度及盐雾等国内实测数据。

The evolution of Military Specifications for Airplane Strength and Rigidity of USAF and USN is presented. The common Military Specifications-MIL-A-8860 (ASG) was applied in the procurement of USAF and UAN in the 1960's, but USAF and USN promulgated MIL-A-87221 (USAF) and MIL-A-8860B (AS) for the procurement of airplanes in the mid of the 1980' s, separately. The revisions of Military Specifications during the twenty five years are presented. The changes in the requirements such as life, loads spectra, fatigue...

The evolution of Military Specifications for Airplane Strength and Rigidity of USAF and USN is presented. The common Military Specifications-MIL-A-8860 (ASG) was applied in the procurement of USAF and UAN in the 1960's, but USAF and USN promulgated MIL-A-87221 (USAF) and MIL-A-8860B (AS) for the procurement of airplanes in the mid of the 1980' s, separately. The revisions of Military Specifications during the twenty five years are presented. The changes in the requirements such as life, loads spectra, fatigue test articles, test schedule, fatigue scatter factors and management are analysed in detail. Finally, the concept of economic life (durability technques), which is only used by USAF, is reviewed.

本文介绍了美国空军、海军飞机结构强度和刚度规范自60年代初共用一套规范到80年代后期各自推出新规范的过程。说明了各个时期规范修订的内容,重点就与寿命和可靠性有关的条款作了较详细的对比分析,诸如寿命概念、载荷环境谱、疲劳试验件、疲劳试验进度、分散系数和部队管理等。最后,对美空军釆用的经济寿命概念(耐久性设计技术)发表了看法。

Aircraft operational environment affects material fatigue behavior and structure service life of aircraft significantly as repeated loads do. In this paper the profile environment analysis method for aircraft operational environment spectrum compilation is put out and operational procedure of the method is stated. An operational environment spectrum of N5A air- craft is compiled with the method. The method is of general usage and engineering application. It can be used for compiling operational environment spectra...

Aircraft operational environment affects material fatigue behavior and structure service life of aircraft significantly as repeated loads do. In this paper the profile environment analysis method for aircraft operational environment spectrum compilation is put out and operational procedure of the method is stated. An operational environment spectrum of N5A air- craft is compiled with the method. The method is of general usage and engineering application. It can be used for compiling operational environment spectra of different type aircraft.

提出了编制飞机使用环境谱的任务-环境分析法,阐述了该方法的实施步骤。利用该方法编制了N5A飞机使用环境谱。该方法具有通用性和工程实用价值,可用它编制各种飞机的使用环境谱

 
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