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Method for Designing Hybrid Airfoils for Icing Wind-Tunnel Tests

机译:风洞试验结冰的混合翼型设计方法

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摘要

The certification of modern commercial aircraft requires manufacturers to demonstrate flight safety under various scenarios, including icing conditions. Although computational tools play a key role in icing-related aircraft design and certification, icing wind-tunnel testing remains an important part of the process. The size of models that can be tested is limited by the dimensions of the existing icing wind-tunnel facilities. To obtain ice accretions on full-scale aircraft wings in icing wind tunnels, scaling methods must be applied. One attractive option is the use of hybrid airfoils. Hybrid airfoils present the same leading-edge geometry of the full-scale airfoil but replace the aft section with a redesigned geometry of reduced chord. When properly designed, these models generate the full-scale ice accretion on the leading edge, with reduced blockage and aerodynamic loads. This paper presents an investigation of the effects of different design parameters on the performance of hybrid airfoils, identifies the key design parameters to generate full-scale ice shapes, and puts the research findings in perspective with overall model design tradeoffs.
机译:现代商用飞机的认证要求制造商在各种情况下(包括结冰条件)演示飞行安全性。尽管计算工具在与结冰相关的飞机设计和认证中发挥着关键作用,但结冰风洞测试仍然是该过程的重要组成部分。可以测试的模型的大小受现有的覆冰风洞设施的尺寸限制。为了在结冰风洞中的全尺寸飞机机翼上积冰,必须采用缩放方法。一种有吸引力的选择是使用混合翼型。混合翼型具有与全尺寸翼型相同的前沿几何形状,但用重新设计的减小弦长的几何形状代替了后部。经过适当设计,这些模型会在前缘产生满量程的积冰,从而减少阻塞和空气动力负荷。本文对不同设计参数对混合翼型性能的影响进行了研究,确定了产生全尺寸冰形的关键设计参数,并将研究结果与总体模型设计之间进行了权衡。

著录项

  • 来源
    《Journal of Aircraft》 |2019年第1期|137-149|共13页
  • 作者单位

    Univ Washington, William E Boeing Dept Aeronaut & Astronaut, Seattle, WA 98195 USA;

    Univ Washington, William E Boeing Dept Aeronaut & Astronaut, Seattle, WA 98195 USA|Univ Washington, Engn, Seattle, WA 98195 USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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