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弹箭与制导学报 >

2019 , Vol. 39 >Issue 5: 127 - 130

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2019.05.030

碳/碳端头热防护的烧蚀外形预测

  • 赵力宁 ,
  • 孟军 ,
  • 周培培
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  • 中国航天空气动力技术研究院, 北京 100074

赵力宁(1985-),男,河北邢台人,工程师,硕士,研究方向:高超气动力。

收稿日期: 2018-08-15

  网络出版日期: 2025-05-12

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Prediction Ablative Shape of C/C Nosetip

  • ZHAO Lining ,
  • MENG Jun ,
  • ZHOU Peipei
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  • China Academy of Aerospace Aerodynamics, Beijing 100074, China

Received date: 2018-08-15

  Online published: 2025-05-12

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摘要

飞行器再入过程中在恶劣热环境作用下会发生烧蚀,准确预测烧蚀外形变化对飞行器的防热设计和稳定性分析非常重要。针对碳/碳钝锥烧蚀防热结构,在考虑气动热和烧蚀的耦合作用下,建立了沿弹道的钝锥烧蚀外形快速预测方法。首先通过轴对称比拟法获得钝锥表面热流,继而由表面热流作为输入求得表面烧蚀量,预测结果与风洞烧蚀试验对比表明外形吻合较好,驻点烧蚀率误差小于30%。

关键词： 高超声速; 烧蚀; 气动热; 热防护

本文引用格式

赵力宁 , 孟军 , 周培培 . 碳/碳端头热防护的烧蚀外形预测[J]. 弹箭与制导学报, 2019 , 39(5) : 127 -130 . DOI: 10.15892/j.cnki.djzdxb.2019.05.030

Abstract

Approximate engineering codes have been developed to predict the C/C nosetip ablative shape change during reentry process.A rapid engineering aero-heating calculation is established by axisymmetric analog method, and the ablative velocity of C/C nosetip is considered by solving the mass and chemical conservation equations of boundary.Then, the shape of C/C nosetip in fluid zone is changed by grid remeshing.At last, this engineering codes is appoved with C/C nosetip ablative experiment, the result show that it can predict the ablative shape change effetvely.

Key words： hypersonic; ablation; aeroheating; thermal protection

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参考文献

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