| 翼吊布局长涵道发动机短舱气动布局优化研究 |
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| 引用本文： | 陈耿.翼吊布局长涵道发动机短舱气动布局优化研究[J].飞机设计,2021,41(1):16-20. |
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| 作者姓名： | 陈耿 |
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| 作者单位： | (西安飞机工业集团有限公司,陕西西安 710089) |
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| 摘 要： | 采用CFD数值计算的方法,对翼吊发动机长涵道短舱相对于机翼的前伸量和下沉量进行优化分析.分析了发动机短舱不同前伸量、下沉量时,飞机在高速巡航状态的干扰阻力和升力损失,以及满足低速平飞最小可用升力下,大迎角状态的失速特性,并计算分析了马赫数对优化结果的影响.计算结果表明,前伸量X/C =0.1时,干扰阻力及升力损失较小;...
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| 关 键 词： | 前伸量 下沉量 干扰阻力 负压峰值 失速特性 |
| 收稿时间： | 2020/4/18 0:00:00 |
| 修稿时间： | 2021/1/13 0:00:00 |
Research on Aerodynamic Optimization of Underwing Long Ducted Nacelle |
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| CHEN Geng.Research on Aerodynamic Optimization of Underwing Long Ducted Nacelle[J].Aircraft Design,2021,41(1):16-20. |
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| Authors: | CHEN Geng |
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| Abstract: | The CFD numerical calculation method is used to optimize protrusion and sinkage of un-derwing long ducted nacelle. The interference resistance of high-speed cruise and stall characteristicsof low-speed high angle of attack were compared when different protrusion and sinkage. The influ-ence of Ma on the optimization results is nanlyzed. The calculated results shows :The interference re-sistance and the lost lift force is small when X/C =0. 1,The maximum diameter of the chamber is5% .which results in less than 1 resistance unit. |
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| Keywords: | the amount of protrusion the amount of sinkage interference resistance peak negativepressure:stall characteristics |
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