低速TPS试验内式流量控制技术研究

胡卜元; 黄勇; 章贵川; 章荣平

doi:10.11729/syltlx20180201

低速TPS试验内式流量控制技术研究

doi: 10.11729/syltlx20180201

中国空气动力研究与发展中心, 四川绵阳 621000

详细信息

作者简介:
胡卜元 (1983-),男,湖南安化人,助理研究员。研究方向:实验空气动力学。通信地址:四川省绵阳市北川羌族自治县129信箱。E-mail: hubuyuan@foxmail.com

通讯作者:
胡卜元, E-mail:hubuyuan@foxmail.com

中图分类号: V211.3
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- 文章访问数: 157
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- PDF下载量: 4
- 被引次数: 0
出版历程
- 收稿日期: 2018-12-17
- 修回日期: 2019-09-28
- 刊出日期: 2019-12-25

Internal mass flow control technology of low speed TPS tests

China Aerodynamics Research and Development Center, Mianyang Sichuan 621000, China

摘要

摘要: TPS试验技术是风洞中研究飞机/发动机一体化设计的最佳手段之一。作为发动机模拟器的TPS单元采用高压空气驱动，因此高压供气流量控制精度与试验精度直接相关。常用的外式流量控制方式由于风洞模型内部空间限制，无法对2台以上的TPS单元进行流量控制。针对外式流量控制方式的不足，设计了一种基于双喉道匹配设计的内式流量控制装置，集流量控制与测量功能于一体，可同时进行4台TPS单元的流量控制，满足4发运输机的动力模拟试验需求。为考核该装置的性能，进行了地面校核试验，试验结果表明该装置具有良好的流量线性控制能力，控制分辨率优于0.15 g/s，流量控制精度优于3 g/s；在8 m×6 m低速风洞进行了某型飞机全模TPS动力模拟试验，试验重复性精度满足国军标合格指标。
- 动力模拟 /
- 风洞试验 /
- 涡轮动力模拟器(TPS) /
- 内式流量控制 /
- 多发控制
Abstract: The TPS testing technology is one of the best methods to study the aircraft/propulsion integrated design in wind tunnels. TPS units, used as engine simulators, are driven by high pressure air. As a result, the mass flow control accuracy of high pressure air has a direct relationship with the wind tunnel testing accuracy. Because of space limits of wind tunnel testing models, the external mass flow control method can not control more than 2 TPS units. In order to overcome deficiencies of the external mass flow control method, a kind of internal mass flow control device was designed. This device integrates the control and measure function, and can control 4 TPS units simultaneously. A check test was conducted in the TPS testing chamber of CARDC. The testing results indicate that the device has good linear mass flow control ability, the control resolution is better than 0.15 g/s, and the control repeatability accuracy is better than 3 g/s. A full model TPS test was conducted in the 8 m×6 m low speed wind tunnel of CARDC as well. The repeatability testing accuracy meets the demands of GJB, which verifies the control accuracy of the device.
- engine simulation /
- wind tunnel test /
- Turbine Powered Simulator (TPS) /
- internal mass flow control /
- multi-engine control

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图 1 总体方案

Figure 1. Overall scheme

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图 2 原理图

Figure 2. Schematic diagram

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图 3 电作动筒原理图

Figure 3. Electric actuator schematic diagram

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图 4 校核试验

Figure 4. Check test

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图 5 控制分辨率试验曲线图

Figure 5. Resolution test results

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图 6 流量控制重复性精度曲线图

Figure 6. Mass flow control tests repeatability accuracy results

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图 7 针阀顶针位移与流量的关系图

Figure 7. Relationship between needle valve size and mass flow rate

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表 1 电作动筒性能指标

Table 1. Electric actuator performance

项目	指标
系统轴数	4轴
直线最大行程	75 mm
最大持续载荷	2000 N
直线运动速度	≤ 30 mm/s
位移控制精度	±0.01 mm
保护功能	限位报警、过流保护

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表 2 流量控制重复性精度

Table 2. Mass flow control tests repeatability accuracy

针阀顶针位置/mm	15.0	30.0	45.0	60.0	67.5
流量控制重复性精度/(kg·s^-1)	0.001	0.003	0.003	0.003	0.002

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表 3 风洞试验重复性精度

Table 3. Wind tunnel tests repeatability accuracy

重复性精度	δ_CL	δ_CD	δ_{C_m}	δ_CY	δ_{C_n}	δ_Cl
NPR=1.25	0.0004	0.00020	0.00053	0.00003	0.00007	0.00008
NPR=1.35	0.0006	0.00024	0.00056	0.00047	0.00003	0.00003
合格指标	0.0040	0.00050	0.00120	0.00120	0.00050	0.00050
先进指标	0.0010	0.00020	0.00030	0.00030	0.00010	0.00010

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