过氧化氢-煤油火箭发动机喷流红外辐射亮度的精确测量

陈豪; 李帅辉; 陈涉; 李森; 李腾; 魏小林; 余西龙; 樊菁

doi:10.11729/syltlx20180171

过氧化氢-煤油火箭发动机喷流红外辐射亮度的精确测量

doi: 10.11729/syltlx20180171

中国科学院力学研究所高温气体动力学国家重点实验室, 北京 100190

详细信息

作者简介:
陈豪(1988-), 男, 山西大同人, 助理研究员。研究方向:红外技术、激光探测。通信地址:北京市北四环西路15号(100190)。E-mail:chenh@imech.ac.cn

通讯作者:
李帅辉, E-mail: lee@imech.ac.cn

中图分类号: O434.3
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- 被引次数: 0
出版历程
- 收稿日期: 2018-11-07
- 修回日期: 2019-06-13
- 刊出日期: 2019-10-25

Accurate infrared radiance measurement of H₂O₂-kerosene rocket engine flume

State Key Laboratory of High-Temperature Gas Dynamics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China

摘要

摘要: 姿轨控火箭发动机喷流红外辐射特性的定量测量，是飞行器突防效能研究以及喷流流场数值模拟计算模型验证中的一个关键环节。为定量研究火箭发动机喷流红外辐射场分布，对某型过氧化氢-煤油小火箭发动机进行了喷流红外辐射特性测量实验。使用的制冷型中波红外相机波段为3.7~4.8 μm，该相机探测阵元平均噪声等效温差为16 mK，输出16 bits信号，具有高灵敏度和大动态范围。通过对红外相机的黑体辐射定标，并对定标误差进行分析，反演所测灰度值图像，在与喷流垂直方向得到中波红外波段的喷流辐射亮度分布。测量结果表明，小火箭发动机喷流中马赫盘结构位置清晰，喷流在中波红外波段的峰值辐射亮度为184 W/（m²·sr），辐射测量精度为12 W/（m²·sr）。
- 发动机喷流 /
- 过氧化氢-煤油 /
- 中波红外 /
- 辐射亮度 /
- 马赫盘
Abstract: The quantitative measurement of infrared radiation (IR) of the attitude and orbit control rocket engine flume plays a key role in the aircraft penetration effectiveness research and in verification of the numerical simulation of the rocket engine flume flow field. In order to study the IR field of the rocket engine flume quantitatively, an experiment is conducted to measure the IR characteristics of the flume of one H₂O₂-kerosene small rocket engine. A cooled midwave infrared camera with a spectral band of 3.7~4.8 μm is developed. The detector, which has a mean NETD of 16 mK and an output resolution of 16 bits, is highly sensitive and has a wide dynamic range. With radiation calibration and calibration error analysis, the obtained grayscale images are converted, and the IR field distribution of the engine flume in the midwave infrared spectral band is acquired. The experiment result shows distinct Mach disks in the plume, and the peak radiation of the plume in the midwave infrared spectral band is 184 W/(m²·sr) with a measurement accuracy of 12 W/(m²·sr).
- engine flume /
- H₂O₂-kerosene /
- midwave infrared /
- radiance /
- Mach disk

HTML全文

图 1 中波红外相机辐射定标点和拟合曲线

Figure 1. Radiation calibration points and fitted curve of the midwave infrared camera

下载: 全尺寸图片幻灯片

图 2 黑体均匀辐射下中波红外相机采集到的原始灰度图像

Figure 2. The original grayscale image obtained by the midwave infrared camera under uniform blackbody radiation

下载: 全尺寸图片幻灯片

图 3 制冷型中波红外相机黑体辐射定标误差

Figure 3. Radiation calibration error for the cooled midwave infrared camera

下载: 全尺寸图片幻灯片

图 4 过氧化氢-煤油小火箭发动机结构示意图^[15]

Figure 4. Schematic of the H₂O₂-kerosene small rocket engine^[15]

下载: 全尺寸图片幻灯片

图 5 发动机喷流红外辐射测量场景示意

Figure 5. Schematic of the engine flume infrared radiation measurement

下载: 全尺寸图片幻灯片

图 6 喷流上半部平均灰度值随时间变化曲线

Figure 6. Time-varying curve of the average grayscale value of the upper half engine plume

下载: 全尺寸图片幻灯片

图 7 煤油和过氧化氢流量及发动机推力值曲线

Figure 7. Time-varying curve of the kerosene flow, H₂O₂ flow and engine thrust

下载: 全尺寸图片幻灯片

图 8 小火箭发动机喷流辐射亮度分布和辐射亮度等高线图，直线标记处为发动机喷口位置

Figure 8. Radiance distribution and radiance contour map of the small rocket engine flume, where the nozzle position is marked with a line segment

下载: 全尺寸图片幻灯片

图 9 发动机喷流辐射亮度纵向分布(“×”字标示发动机喷口位置)

Figure 9. Longitudinal distribution of the engine flume radiance (the nozzle position is marked with a cross symbol)

下载: 全尺寸图片幻灯片

表 1 制冷型中波红外相机黑体辐射定标主要误差来源

Table 1. Main error sources of the radiation calibration for the cooled midwave infrared camera

Error source	Value
Blackbody emissivity uncertainty	0.02
Blackbody temperature resolution	0.1 K
Radiation calibration curve fitting error	0.65 W/(m²·sr)
NETD of the cooled midwave infrared camera	16 mK
Non-uniformity of the camera focal plate	5%

下载: 导出CSV

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