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

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2011, Vol. 32 ›› Issue (12): 2335.

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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

Abstract

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

CLC Number:

V261.7

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

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