CAJ | 학술논문

详细分析了测热传感器安装后驻点区曲率变化对局部流场变化和热流变化的影响规律，并根据不同传感器的类型和敏感元件的组成情况，研究给出了修正方法和修正系数；研究了传感器表面温升与热流之间的相互影响关系，对热流实测结果进行了修正。同时，研究了来流流场的微小变化对热流的影响，分析了传感器组成尺寸、人为读数、传感器重复使用等随机因素对热流测量的影响，并结合随机误差分析理论给出了不确定度的评定方法，计算得到了某次热流试验中的测量不确定度。并由此给出了对传感器制作和测热试验方法的改进建议。该文的研究内容有利于进一步提高热流测量精度，为高超声速飞行器的研制提供参考。
상세분석료측열전감기안장후주점구곡솔변화대국부류장변화화열류변화적영향규률，병근거불동전감기적류형화민감원건적조성정황，연구급출료수정방법화수정계수；연구료전감기표면온승여열류지간적상호영향관계，대열류실측결과진행료수정。동시，연구료래류류장적미소변화대열류적영향，분석료전감기조성척촌、인위독수、전감기중복사용등수궤인소대열류측량적영향，병결합수궤오차분석이론급출료불학정도적평정방법，계산득도료모차열류시험중적측량불학정도。병유차급출료대전감기제작화측열시험방법적개진건의。해문적연구내용유리우진일보제고열류측량정도，위고초성속비행기적연제제공삼고。
The influence of thermal sensors’mathematical and physical model and data pro-cessing method on the acquisition of heat flux data were analyzed,and the difference between the processed and actual heat flux data was quantitatively presented upon that.The changes of the flow field and wall heat flux caused by the curvature variation of the stagnation region due to the installation of sensors were also discussed in this paper.The correction method and correspond-ing coefficients were proposed for different types of sensors and different compositions of sensi-tive elements.The correlation between temperature rise and heat flux variation on the sensor sur-face was studied and the modified formula was given to modify the original data.Moreover,the uncertainty estimation method of aerodynamic heating measurement was established according to different error sources,and the influences of small changes of inflow condition on the heat flux and sensors’random factors on heat flux measurement were also analyzed.Based on the random error analysis theory,the uncertainty assessment method was established,based on which the uncertainty of heat flux measurement in the validation experiment was obtained.In conclusion, some valuable results and suggestions about the sensor design and aerothermal experiments were obtained,and these results can improve the accuracy of heat flux measurement further and thus have prominent application prospect in near-space hypersonic vehicle development.