缩比验证机轴对称矢量喷管设计与验证

孟祥喆; 赵志俊; 郑浩

doi:10.13433/j.cnki.1003-8728.20200281

缩比验证机轴对称矢量喷管设计与验证

doi: 10.13433/j.cnki.1003-8728.20200281

中国飞行试验研究院，西安　710089

详细信息

作者简介:
孟祥喆（1991−），硕士，研究方向为航空前沿技术探索验证，619828657@qq.com

中图分类号: V228.7
计量
- 文章访问数: 92
- HTML全文浏览量: 25
- PDF下载量: 2
- 被引次数: 0
出版历程
- 收稿日期: 2020-06-16
- 刊出日期: 2021-11-05

Design and Validation of Axisymmetric Thrust Vectoring Nozzle for Scaled Jet UAVs

Chinese Flight Test Establishment, Xi' an 710089, China

摘要

摘要: 在某缩比验证机推力矢量系统研制中，首先采用两套电动舵机驱动的连杆机构的设计方案，实现了矢量喷管的轴对称偏转。通过分析矢量喷管偏转过程中作动机构受力关系和运动关系，得到舵机需提供的最大扭矩与最大铰链力矩的关系。分别采用工程估算和CFD数值模拟两种方法对矢量喷管偏转产生的铰链力矩进行了计算。通过地面试验和飞行试验验证了所研制的轴对称推力矢量系统满足工程应用要求。
- 轴对称矢量喷管 /
- 铰链力矩 /
- 动量定理 /
- 数值模拟 /
- 飞行试验
Abstract: In the development of thrust vectoring system of a scaled jet UAV, the axisymmetric rotating function has been achieved by designing a kind link mechanism, which is driven by two electric steering servos. By analyzing the force and motion states in the process of thrust vectoring nozzle rotating, the relationship between the maximum servo torque needed and the maximum hinge torque is obtained. Then, methods of engineering estimation and CFD numerical simulation have been implemented on calculating the hinge moment generated by the thrust vectoring nozzle when rotating. The calculation results of hinge moment were used to select suitable electric steering servo, which has enough torque to against the hinge moment. Finally, the results of ground test and flight test demonstrated good performance of the axisymmetric thrust vectoring system, which meeting requirements of engineering application.
- axisymmetric thrust vectoring nozzle /
- hinge moment /
- theorem of momentum /
- numerical simulation /
- flight test

HTML全文

图 1 轴对称矢量喷管

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图 2 矢量喷管运动原理示意图

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图 3 铰链力矩产生原理示意图

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图 4 矢量喷管尾喷流模拟建模及网格生成

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图 5 推力计算结果收敛情况

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图 6 流场对称面上的马赫数分布情况

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图 7 延长管与矢量喷管内表面压力分布

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图 8 地面试验发动机状态变化历程

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图 9 缩比验证机试飞测试数据

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表 1 小型涡喷发动机基本参数

参数及单位	数值	参数及单位	数值
直径/mm	201	长度/mm	524
进气流量/(kg·s^–¹)	1.25	油耗/(kg·min^–1)	2.4
平均排气温度/℃	800	最大排气温度/℃	875

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表 2 动量定理方法铰链力矩计算结果

η	0.8	0.85	0.9	0.95
M/(N·m)	14.3	16.8	19.2	21.6

下载: 导出CSV

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