基于光固化快速成型技术的测压风洞模型孔道制造与性能评价

材料工程与机械制造

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基于光固化快速成型技术的测压风洞模型孔道制造与性能评价

张威¹, 李涤尘¹, 赵星磊¹, 朱伟军¹, 王炜², 刘钧²

1. 西安交通大学机械制造系统工程国家重点实验室, 陕西西安 710049;
2. 中航工业集团成都飞机设计研究所, 四川成都 610041

收稿日期:2011-04-18 修回日期:2011-05-23 出版日期:2011-12-25 发布日期:2011-12-08
通讯作者: 李涤尘 E-mail:dcli@mail.xjtu.edu.cn
作者简介:李涤尘(1964-) 男,长江学者特聘教授,博士生导师。主要研究方向:快速成型技术,复合材料制造技术。 Tel: 029-83399510 E-mail: dcli@mail.xjtu.edu.cn
基金资助:
国家自然科学基金 (51075385);成都飞机设计研究所基金

Fabrication and Performance Evaluation of Micro-channels in Aircraft Wind-tunnel-models for Pressure Measurements Using Stereolithography

ZHANG Wei¹, LI Dichen¹, ZHAO Xinglei¹, ZHU Weijun¹, WANG Wei², LIU Jun²

1. State Kye Lab for Manufacturing systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China;
2. Chengdu Aircraft Design & Research Institute, China Aviation Industry Group, Chengdu 610041, China

Received:2011-04-18 Revised:2011-05-23 Online:2011-12-25 Published:2011-12-08

摘要/Abstract

摘要： 传统金属加工制造测压风洞模型存在难度大、周期长、成本高的问题,利用光固化快速成型技术,可以实现测压风洞模型气动外形-内部孔道的一体化成型制造。设计制作了不同孔径、长度的孔道结构模型,对孔道成型质量和孔道结构参数之间以及孔道半径与设计半径之间的关系进行了研究,并对孔道的气密性以及通气性进行了验证。研究得出了可成型的测压模型孔道结构包括孔径、流道长度以及成型方向3个参数的设计原则以确保孔道成型后能够导通。另外,建立了不同孔径大小的设计补偿原则以减小快速成型制造误差。研究表明,测压孔道气密性、通气性均良好,基于光固化快速成型的一体化测压模型制造技术满足风洞试验要求,可以替代传统模型的测压金属管应用于实际风洞测压试验。

关键词: 光固化快速成型, 风洞试验, 测压模型, 气密性, 通气性

Abstract: In order to overcome the difficulties with machining the internal channels of a wind tunnel aircraft model for pressure measurements, this paper proposes the use of stereolithography to realize the integrated forming of aerodynamic configurations and internal channels. A series of micro-channels with different diameters and lengths are fabricated, and their forming qualities are examined with an optical microscope system. The diameters of cross-sections are also measured to conform with the radius compensation principle concerning the parameters such as diameter, length and prototyping direction. Air tightness and air permeability of the micro-channels is verified by means of a special test device. Therefore, the channels based on stereolithography meet the requirements of wind tunnel test and they are able to replace the metal tubes.

Key words: stereolithography, wind tunnel testing, model for pressure measurement, air tightness, air permeability

中图分类号:

V261.7

张威, 李涤尘, 赵星磊, 朱伟军, 王炜, 刘钧. 基于光固化快速成型技术的测压风洞模型孔道制造与性能评价[J]. 航空学报, 2011, 32(12): 2335.

ZHANG Wei, LI Dichen, ZHAO Xinglei, ZHU Weijun, WANG Wei, LIU Jun. Fabrication and Performance Evaluation of Micro-channels in Aircraft Wind-tunnel-models for Pressure Measurements Using Stereolithography[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2011, 32(12): 2335.

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[6] Azarov Y A, Vermel V D, Kornushenko A V, et al. Experience in laser stereolithography and its application in manufacturing wind-tunnel aerodynamic models of various purposes//Proceedings of the Seventh International Conference on Laser and Laser-Information Technologies. 2002, 4644: 433-440.

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[10] 李平, 谢艳, 杨奇磷. 2.4 m风洞大规模测压试验技术及应用[J]. 流体力学实验与测量, 2002, 16(2): 92-96. Li Ping, Xie Yan, Yang Qilin. Test technique and application of large-scale pressure measurement in the 2.4 m×2.4 m transonic wind tunnel[J]. Journal of Experiments in Fluid Mechanics, 2002, 16(2): 92-96. (in Chinese)

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[16] Zhou Z H, Li D C, Zhang Z Y, et al. Design and fabrication of a hybrid surface-pressure airfoil model based on rapid prototyping [J]. Rapid Prototyping Journal, 2008, 14(1): 57-66.

E-mail：hkxb@buaa.edu.cn

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主管单位：中国科学技术协会主办单位：中国航空学会北京航空航天大学

基于光固化快速成型技术的测压风洞模型孔道制造与性能评价

Fabrication and Performance Evaluation of Micro-channels in Aircraft Wind-tunnel-models for Pressure Measurements Using Stereolithography

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