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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。
In a high speed wind tunnel, the aerodynamic characteristics of the buried bomb bay door are experimentally studied, and the static / dynamic test results with the Mach number equal to 0.6 are given. The static test results show that there is strong aerodynamic noise on the door surface and the sound pressure level near the leading edge is equivalent to the maximum sound pressure level at the bilge. The aerodynamic load of the door varies drastically with the opening angle of the door, δ≈30 ° When the door pneumatic load the largest. The dynamic test results show that the aerodynamic load changes obviously with the St number when the door is opened / closed, and the aerodynamic load when the door is opened and closed is significantly different.