导弹与航天运载技术
導彈與航天運載技術
도탄여항천운재기술
MISSILES AND SPACE VEHICLES
2015年
3期
16-21
,共6页
功能梯度防热材料%高超声速飞行器%热防护%分层法%烧蚀/温度场计算
功能梯度防熱材料%高超聲速飛行器%熱防護%分層法%燒蝕/溫度場計算
공능제도방열재료%고초성속비행기%열방호%분층법%소식/온도장계산
Functionally graded materials (FGMs) for thermal protection%Hypersonic vehicle%Thermal protection techniques%Layering method%Ablation/temperature field calculation
研究梯度型防热材料的烧蚀/温度场计算方法，基于分层法，将梯度型防热材料平面结构划分成若干层，每层的材料参数按函数形式变化，在此基础上对材料的热防护方案进行烧蚀/温度场计算。通过与单层均质防热材料、单层均质低密度防热材料、双层式防热材料和夹层式防热材料计算结果的对比分析，指出梯度型防热材料的优势，以及运用于高超声速飞行器需关注和解决的问题。研究结果表明，梯度型防热材料在不增加表面的热解烧蚀量的情况下，能明显减少向内部结构传导的热量，大大减轻防热结构的重量，显示了在高超声速气动热防护领域极高的防热效率和应用前景。
研究梯度型防熱材料的燒蝕/溫度場計算方法，基于分層法，將梯度型防熱材料平麵結構劃分成若榦層，每層的材料參數按函數形式變化，在此基礎上對材料的熱防護方案進行燒蝕/溫度場計算。通過與單層均質防熱材料、單層均質低密度防熱材料、雙層式防熱材料和夾層式防熱材料計算結果的對比分析，指齣梯度型防熱材料的優勢，以及運用于高超聲速飛行器需關註和解決的問題。研究結果錶明，梯度型防熱材料在不增加錶麵的熱解燒蝕量的情況下，能明顯減少嚮內部結構傳導的熱量，大大減輕防熱結構的重量，顯示瞭在高超聲速氣動熱防護領域極高的防熱效率和應用前景。
연구제도형방열재료적소식/온도장계산방법，기우분층법，장제도형방열재료평면결구화분성약간층，매층적재료삼수안함수형식변화，재차기출상대재료적열방호방안진행소식/온도장계산。통과여단층균질방열재료、단층균질저밀도방열재료、쌍층식방열재료화협층식방열재료계산결과적대비분석，지출제도형방열재료적우세，이급운용우고초성속비행기수관주화해결적문제。연구결과표명，제도형방열재료재불증가표면적열해소식량적정황하，능명현감소향내부결구전도적열량，대대감경방열결구적중량，현시료재고초성속기동열방호영역겁고적방열효솔화응용전경。
Methods forAblation/temperature field calculation of FGMs were accomplished and the results were given.Based on layering method, the FGMs plane structure is divided into a certain number of homogeneous layers with the material property between adjacent layer varying in a functional manner. Comparative analysis of homogeneous materials, low density homogeneous materials, double layer materials and sandwich materials, the advantages of FGMs are emphatically discussed as well as the problems which should be noticed and resolved during the application of such materials on Hypersonic vehicle. It showed that, the use of FGMs reduces mass consumption of original material, structural weight, and temperature rise of internal structure. It shows the FGMs may provide high thermal protection efficiency and its future application is prospected on hypersonic aerodynamic heating field.
