飞行器风洞模型的快速制造技术

The rapidly fabrication technique for wind-tunnel models of flight vehicle

基于快速成型技术,提出了飞行器风洞模型的快速制造技术方案。通过研究测压风洞模型的尺寸补偿、孔道设计及结构布置规律,发展了孔道一体化测压模型的快速制造技术;发展了结构相似气动弹性模型的设计与制造方法,并通过模态实验校核了精度;通过快速成型技术与电化学沉积技术的结合,发展了金属-树脂复合测力模型的快速制造方法,提高了模型的强度和刚度;论证了该技术在周期和成本等方面的优越性。该技术克服了传统加工的局限,提供轻质风洞模型制造的高精度、短周期、低成本的整体解决方案,为发展新型试验技术等提供基础,这能够提升风洞模型设计与制造的自动化水平,有助于该领域传统技术的革新,对新型飞行器的研制具有重要意义。

Based on rapid prototyping,the paper puts forward a rapidly fabrication technique for wind-tunnel models of flight vehicles.The rapidly fabrication technique of integral tap-passage pressure models was developed,deriving from the study of dimensional compensation,taps and passages design and passage configuration design.Focusing on the design and fabrication of structurally similar aeroelastic models,a new method is presented in the paper and validated by modal test.The authors developed a fabrication technique for the fabrication of wind-tunnel models made of metal-resin composite,through the combination of rapid prototyping and electrochemical deposition.The time and cost advantages of the new technique is discussed,too.In summary,overcoming the limitation of traditional fabrication techniques,the rapidly fabrication technique provides a basis of the development of new test techniques.