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为进一步提高侧压式进气道性能,提出了变侧压角与变后掠角+变侧压角两种曲面压缩的侧压式进气道设计方案,利用数值仿真手段对其Ma=6,Ma=4下的流场结构及总体性能开展了研究,并与常规平面压缩的侧压式进气道进行了比较.结果表明,曲面压缩的侧压式进气道性能要明显优于常规平面压缩进气道;采用变后掠角+变侧压角设计的曲面侧压式进气道具有前掠与后掠两种进气道的优点,能显著提高进气道高低马赫数下的性能.计算发现,Ma=6设计点下,变后掠角+变侧压角曲面侧压式进气道流量系数较常规进气道提高4.1%,总压恢复系数提高5.3%;Ma=4来流条件下,流量系数提高6.3%,总压恢复系数提高5.4%.
In order to further improve the performance of the side-pressure inlet, a design scheme of side-pressure inlet with variable surface pressure angle and varying swept angle and variable pressure angle is proposed. , The flow field structure and overall performance under Ma = 4 are compared and compared with those of the conventional planar compression side pressure inlet.The results show that the performance of the side compression inlet with surface compression is obviously better than that of conventional Plane compressed air intake; the curved side inlet with variable sweep angle and variable side pressure has the advantages of both forward swept and swept air intake, can significantly improve the high and low inlet Mach number The calculated results show that under Ma = 6 design point, the flow coefficient of the side pressure inlet with variable sweep angle and variable pressure side increases by 4.1% and the total pressure recovery coefficient increases by 5.3% compared with the conventional inlet. Ma = 4 Flow conditions, the flow coefficient increased 6.3%, the total pressure recovery coefficient increased 5.4%.