用户名: 密码: 验证码:
超音速飞行器地面音爆强度预测方法对比研究
详细信息    查看官网全文
摘要
音爆预测是超音速民机设计的关键技术。对两种超音速飞行器地面音爆强度的预测方法进行了对比研究:第一种是快速计算方法,另一种是基于波形参数法的远近场匹配高精度预测方法。分别采用这两种方法对D-SEND#1音爆测试模型进行了验证计算,与音爆试验数据进行了对比分析,对二者的可靠性和适用范围进行了初步评估。结果表明,快速计算方法简单高效,适用于超音速飞行器的概念设计;远近场匹配方法计算精度高,能够准确预测复杂音爆信号的细部特征,可用于详细设计阶段的低音爆优化设计。
Sonic boom prediction is a key issue to be addressed in supersonic commercial transport design.The comparison between two different numerical approaches for ground sonic boom signature evaluation is presented: one is simplified method, another is near-field/far-field matching high-fidelity method based on waveform parameter method.Ground sonic boom signature of D-SEND#1 sonic boom testing model are calculated by the two methods respectively, reliability and scope of application of which were preliminary evaluated according to the comparison of predicted results with test data.The results show that simplified method is simple and efficient, suitable for conceptual design of supersonic flight vehicle; the near-field/far-field matching method could accurately predict complex sonic boom signal characteristics, can be used for detailed low sonic boom optimization design.
引文
[1]Kenneth J P,Domenic J M.Sonic boom research:history and future[R].AIAA 2003-3575.
    [2]Carlson,H W.,Simplified Sonic-Boom Prediction[R].NASA Technical Paper 1122,Langley Research Center,Hampton,Virginia,1978
    [3]Thomas,C L.Extrapolation of Sonic Boom Pressure Signatures by the Waveform Parameter Method[R].NASA TN D-6832,1972.
    [4]Masahisa H,Kenji Y.D-SEND project for low sonic boom design technology[C].28th international congress of the aeronautical sciences,2012.
    [5]http://d-send.jaxa.jp/d_send_e/d_send_1.html.

© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号

地址:北京市海淀区学院路29号 邮编:100083

电话:办公室:(+86 10)66554848;文献借阅、咨询服务、科技查新:66554700