摘要
在高速风洞中对内埋弹舱舱门气动特性进行了试验研究,给出了马赫数等于0.6时的静/动态试验结果。静态试验结果表明:舱门表面存在较强的气动噪声,其前缘附近的声压级与舱底最大声压级量值相当;舱门气动载荷随舱门开启角度变化剧烈,δ≈30°时舱门气动载荷最大。动态试验结果表明:舱门开启/关闭过程中的气动载荷随St数变化明显;舱门开启与关闭过程中的气动载荷存在显著差异。
An investigation on aerodynamic characteristics of internal weapons bay＇s door was conducted in high speed wind tunnel and the static/dynamic test results at Mach number equals to 0.6 were presented in this paper. Static test results indicate that the acoustic noise around internal weapons bay＇s door is strong and the sound pressure level at the fore-edge of the door is close to the peak value of internal bay floor. Aerody- namic loads of the door change acutely with the variation of door＇s opening angle and that reach to the culmi- nation when δ almost equals to 30°. Dynamic test results show that aerodynamic loads of the door are influ- enced distinctly by St number. Aerodynamic characteristics have obvious difference between opening and closing process of the door.
出处
《空气动力学学报》
EI
CSCD
北大核心
2012年第6期744-748,共5页
Acta Aerodynamica Sinica
关键词
内埋弹舱
气动噪声
声压级
气动载荷
internal bay
acoustic noise
sound pressure level （SPL）
dynamic loads
