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起落架机轮溅水情况下的发动机进气道吸水特性分析

杨成凤1,郭兆电2,邓文剑1   

  1. 1. 中航工业一飞院
    2. 中航第一飞机设计研究院
  • 收稿日期:2017-05-26 修回日期:2017-08-31 发布日期:2017-09-08
  • 通讯作者: 杨成凤
  • 基金资助:

Characteristic of Engine Water Ingestion from Wheel Spray

  • Received:2017-05-26 Revised:2017-08-31 Published:2017-09-08

摘要: 当飞机在积水跑道上起飞着陆滑跑时,由于起落架机轮溅水引起的进气道吸水问题是非常复杂的。提出了进气道吸水特性分析的两种方法:类比法和数值模拟法。以某国产运输机为例,以机轮溅水的典型初始参数为输入,运用上述两种方法,对该飞机的进气道吸水特性进行分析。分析结果表明:该飞机在不同的滑跑速度以及典型的溅水初始参数条件下,进气道均处于起落架机轮的溅水覆盖区域以外,符合适航条例相关要求;机轮溅水被内侧短舱进气道吸入的条件是侧向溅水初始速度达到69m/s以上,同时法向溅水初始速度至少达到40m/s以上。

关键词: 气液两相流, 进气道吸水, 参数化分析, 适航符合性, 数值模拟

Abstract: When an airplane passes through water standing on runways and taxiways, the water ingestion from wheel spray is a very complex process. Two methods were proposed for analysis the characteristic of engine water ingestion from wheel spray: analogy and numerical simulation. These two methods were conducted to analyze the water ingestion characteristics of engine inlet as the airplane passes through water standing by different velocity that associate with velocity of water from wheel spray, typical conditions includes different taxied velocity and water spay initial parameters.The results illustrate that inlet would not suck spray water and demonstrate its agreement to the regulation. water from wheel spray was ingested by inlet engine as Vy increases over 69m/s as well as Vz increases over 40m/s.

Key words: gas-liquid two-phase flow, Water Ingestion , parameterized analysis, airworthiness, Numerical Simulation