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Propulsion considerations for supersonic oblique flying wings

机译:超音速斜飞翼的推进考虑因素

摘要

Propulsion considerations unique to the supersonic oblique flying wing, including cycle selection, sizing, and integration were investigated via the development and interrogation of aerodynamic and propulsive synthesis models. These models were an amalgamation of computational tools (MSES), linearized theory, parametric estimation, and quasi D thermodynamic cycle analysis. Lift-to-drag ratio, thrust specific fuel consumption, and nacelle wave drag were examined as intermediate figures of merit that would ultimately impact the final performance metric-namely, range parameter and specific excess power. It was found that higher bypass ratio engines could yield an increase in the range parameter up until a critical mach number, above which the increasing nacelle drag would offset the TSFC reductions to yield a net degradation in range performance. Between the baseline TF30-type cycle and its BPR 2.4 modified variant, this critical mach number was found to be at approximately M 2.0 for TT4/TT2 = 5, and M 2.2 for TT4/TT2 = 6.
机译:通过开发和询问气动和推进综合模型,研究了超音速倾斜飞行翼特有的推进考虑因素,包括循环选择,定型和集成。这些模型是计算工具(MSES),线性化理论,参数估计和准D热力学循环分析的合并。升阻比,推力比油耗和机舱波浪阻力被视为中间品质因数,这将最终影响最终性能指标,即范围参数和比过功率。已经发现,更高的旁路比发动机可以使范围参数增加,直到达到临界马赫数为止,在此之前,机舱阻力的增加将抵消TSFC的降低,从而导致范围性能的净下降。在基线TF30型循环与其BPR 2.4修饰的变体之间,对于TT4 / TT2 = 5,该临界马赫数约为M 2.0,对于TT4 / TT2 = 6,该临界马赫数约为M 2.2。

著录项

  • 作者

    Shinagawa Yuto;

  • 作者单位
  • 年度 2006
  • 总页数
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类

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