摘要
为了更加全面地得到偏转头弹箭的流场特性,在万米高空对其超声速流场进行了数值模拟。在偏角和攻角均相同时,将高空中弹箭的流场与近地面的流场进行比较后发现:海拔高度对偏转头弹箭的流场结构影响较小,头部偏转对尾部流场的影响仍较小,因此,相比鸭舵控制,偏转头弹箭控制方式仍具有一定优越性,继续保持高升阻比特性,但在高空中,流场中相应点的压力值和温度值均比近地面处有所降低,导致其控制力有所下降。
In order to research the flow characteristics of a supersonic projectile with deflectable nose com- pletely, the projectiles were simulated numerically at the altitude of 10000 m. After the comparison of the flow structures of projectile in the high with the low attitudes of the same deflectable angles and angles of attack, we find that attitude has little influence on the structures of flow field, and the deflectable nose has also little affection on the flow field downstream. Therefore, compared to canard control, the deflectable nose control still has its superiority at the high attitude. But due to the decreasing pressure and tempera- ture, the control efficiency decreases at high altitude.
出处
《四川兵工学报》
CAS
2014年第10期29-32,共4页
Journal of Sichuan Ordnance
基金
重点实验室基金(9140C300205110C30)对本研究的支持
关键词
偏转头弹箭
超声速流场
高空
数值模拟
projectile with deflectable nose
supersonic flow field
high attitude
numerical simulation
