透波材料高温介电性能评价表征

概述了透波材料高温介电性能评价表征的研究意义及相关的基本概念、测试方法;介绍了国内外发展现状,以高Q腔法为例阐述了高温测试中关键共性技术,并对典型测试结果进行了分析;展望了透波材料高温介电性能评价表征的发展及应用前景.     

某新型大气总温传感器的设计改进探讨

介绍了总温传感器的设计原理,并将国内外各型号进行对比和评价,提出了某新型总温传感器设计改进的方案原理.     

某型涡轴发动机地面低温起动技术研究

分别从不加温直接起动、数控系统控制规律更改、加温后起动等各方面对某型全数控涡轴发动机在高寒机场的地面低温起动试验进行分析研究,最终总结出该型发动机的地面低温起动规律。结果表明：延长起动机带转时间,并对发动机进行适时加温,可使发动机低温起动成功。     

Comparison of calculation models for determination of the mesopause temperature using SATI images

The Spectral Airglow Temperature Imager is an instrument for ground-based spectroscopic measurements of the night-glow atmosphere emissions. This instrument was developed specially for gravity wave investigation. The measured airglow spectra are matched to synthetic spectra calculated in advance for determination of the temperature in the mesopause region where the radiation maximum of some О₂ emissions is situated. The synthetic spectra are transformed into a format which corresponds to the measured spectra in order to be matched. This transformation is based on the known values of the refractive index and the central wavelength of the interference filter used. A substantial part of the processing algorithms of the SATI images is connected with determination of these two filter parameters. The results of the original and newly-proposed algorithms for filter parameter calculation and their importance for the final results for temperature determination on the basis of the О₂ (864–868 nm) emission measurements are presented.     

罩体材料介电常数高温宽带测试方法

介绍了基于传输反射法理论改进,组建了室温（R.T.）～600℃,400MHz～18GHz介电常数测量系统。分别从系统组成和测试方法两个方面入手,详细介绍高温传输反射测试系统对器件的材质、工艺、性能指标等特殊要求,重点介绍了高温测试用到的校准技术、高温修正算法、时域门技术、尺寸误差修正、自动控制等理论和技术难题。并佐以实验进行验证,试验结果与标称值符合良好。     

Semi-analytic Solution of Steady Temperature Fields During Thin Plate Welding

Usually, it is very difficult to find out an analytical solution to thermal conduction problems during high temperature welding. Therefore, as an important numerical approach, the method of lines (MOLs) is introduced to solve the temperature field characterized by high gradients. The basic idea of the method is to semi-discretize the governing equation of the problem into a system of ordinary dif-ferential equations (ODEs) defined on discrete lines by means of the finite difference method, by which the thermal boundary condition with high gradients are directly embodied in formulation. Thus the temperature field can be obtained by solving the ODEs. As a numeri-cal example, the variation of an axisymmetrical temperature field along the plate thickness can be obtained.     

空气循环制冷游离水与空气分离方法的探讨与研究

本文分析了空气循环制冷技术的原理以及技术应用于地面设备的特点，针对外界高温、高湿的大气条件下制冷过程中游离水与空气的分离问题给出了新的有效的解决办法。     

单屏蔽式温度传感器动态建模及补偿技术研究

单屏蔽式温度传感器一般用来测量发动机高速气流总温,本文依据其动态校准试验数据,采用系统辨识方法建立了它的动态试验数学模型.根据辨识的数学模型,采用一种快速的动态补偿算法,得出了传感器动态补偿器的传递函数,为下一步在硬件上设计实用的温度传感器动态补偿器打下了坚实的基础.     

非平衡电弧加热射流光谱学诊断方法：第二部分：氩,氮混合射流

本文是非平衡电弧加热射流光谱学诊断方法实验研究工作的第二部分，给出了氩、氮混合射流的结果，证明亚声速射流中确有非平衡囊兜现象存在。     

太阳活动、黑潮海温年季变化与长江中游旱涝灾害

本文采用太阳１０．７ｃｍ辐射流量（Ｆ１０．７）作为太阳活动指标，根据最近３０多年的太阳活动、西太平洋黑潮区海温和长江中游干支流地区雨量观测数据，分析了三者之间的关系，研究发现长江中游地区旱涝明显地受太阳活动和黑潮海温年季变化的共同控制．可根据某些特征，利用两年之前的太阳１０．７ｃｍ辐射流量和当年春季之前黑潮海温的观测数据，分析判断长江中游当年夏季是否发生旱涝灾害的趋势．