| 降低表面温度和发射率抑制排气系统红外辐射的研究 |
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| 引用本文： | 黄伟,吉洪湖,斯仁,陈俊.降低表面温度和发射率抑制排气系统红外辐射的研究[J].推进技术,2011,32(4):550-556. |
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| 作者姓名： | 黄伟 吉洪湖 斯仁 陈俊 |
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| 作者单位： | 1. 南京航空航天大学能源与动力学院,江苏南京210016／徐州空军学院航空四站系,江苏徐州221000
2. 南京航空航天大学能源与动力学院,江苏南京,210016 |
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| 摘 要： | 为了降低涡扇发动机轴对称排气系统的红外辐射特征,研究了降低排气系统腔体表面温度和发射率抑制红外辐射的规律。首先通过模拟实验研究了对中心锥进行冷却和涂覆低发射率涂层的红外抑制效果;然后用实验数据对本文使用的红外辐射特征计算方法和程序进行了验证;最后通过数值计算研究了典型尺寸的涡扇发动机排气系统降温和发射率分布对红外辐射特征的影响规律。结果表明：降低中心锥等部件的温度和发射率可明显降低排气系统在α〈15°范围内的红外辐射强度;若中心锥的温度降低100K,中心锥、涡轮和径向稳定器等部件的表面发射率降至0.2,则排气系统尾向的红外辐射强度可降低40%以上,探测距离缩短20%左右。
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| 关 键 词： | 涡轮风扇发动机 排气系统 红外隐身技术 冷却 低发射率 探测距离 |
| 收稿时间： | 6/8/2010 12:00:00 AM |
| 修稿时间： | 2010/7/28 0:00:00 |
Investigation of infrared suppression of exhaust system by reducing surface temperature and emissivity |
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| HUANG Wei,JI Hong-hu,SI Ren and CHEN Jun.Investigation of infrared suppression of exhaust system by reducing surface temperature and emissivity[J].Journal of Propulsion Technology,2011,32(4):550-556. |
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| Authors: | HUANG Wei JI Hong-hu SI Ren and CHEN Jun |
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| Institution: | HUANG Wei1,2,JI Hong-hu1,SI Ren1,CHEN Jun1 (1.Coll.of Energy and Power,Nanjing Univ.of Aeronautics and Astronautics,Nanjing 210016,China,2.Dept.of Aerial Four Stations,Xuzhou Air Force Coll.,Xuzhou 221000,China) |
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| Abstract: | To reduce the infrared radiation of an axisymmetric exhaust system of turbofan engine,the infrared suppression laws by reducing exhaust system surface temperature and emissivity were investigated.Firstly,the infrared suppression effects of cooling and low emissivity coating on the cone surface were investigated by simulative experiment.Secondly,the computer code adopted in current research was validated with the experimental results.Lastly,the effect laws of reducing temperature and emissivity distribution ... |
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| Keywords: | Turbofan engine Exhaust system Infrared stealth technology Cooling Low emissivity Detection range |
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