CAJ | 학술논문

为了获得液氮冷屏蔽罩对弹道导弹中段弹头红外辐射特性的抑制效果,研究了液氮冷屏蔽罩内的流动与换热机理,综合考虑各种影响弹头与冷屏蔽罩温度分布和红外辐射特征的因素,建立了用于中段弹头的冷屏蔽罩温度与红外辐射模型,得到了冷屏蔽罩外表面与内部流体的温度分布以及红外辐射亮度,分析了冷屏蔽罩的红外辐射抑制效果.计算结果表明,冷屏蔽罩可有效降低弹道导弹中段弹头的红外辐射特征.
위료획득액담랭병폐조대탄도도탄중단탄두홍외복사특성적억제효과,연구료액담랭병폐조내적류동여환열궤리,종합고필각충영향탄두여랭병폐조온도분포화홍외복사특정적인소,건립료용우중단탄두적랭병폐조온도여홍외복사모형,득도료랭병폐조외표면여내부류체적온도분포이급홍외복사량도,분석료랭병폐조적홍외복사억제효과.계산결과표명,랭병폐조가유효강저탄도도탄중단탄두적홍외복사특정.
In order to obtain the inhibition effect of the infrared signature of ballistic missile warhead in midcourse using the liquidnitrogen cooled shroud, mechanism on flow and heat transfer of liquidnitrogen cooled shroud was investigated. Considering the various factors affecting the temperature and infrared signature of the warhead and its cooled shroud, the temperature and infrared signature model of liquid nitrogen cooled shroud used to ballistic missile warhead in midcourse was established. The temperature distribution of outside surface of cooled shroud and the fluid in the cooled shroud and infrared radiance were obtained, and the infrared signature suppress effect was analyzed. The results show that the infrared signature of the ballistic missile warhead in mideourse can be reduced effectively using the liquidnitrogen cooled shroud.