3D-PRINTING TECHNOLOGY FOR AERODYNAMIC MODELS OF ROCKET AND SPACECRAFTS
[For the English abstract and full text of the article please see the attached PDF-File (English version follows Russian version)]. ABSTRACT The article briefly evaluates the use of 3D-printing to create size-similar models of rocket and space­crafts’ elements suitable for conditions of aerody­namic ground testing. The practices of NASA regarding generative technology for aerodynamics simula­tion are considered. The authors built a model using AGARD calibration models, 3D printer Ultra 2 of EnvisionTEC, Digital Light Processing (DLP) and pho­topolymer HTM-140. Next described step was mod­el’s fault detection and analyze of roughness of sur­face layer. The results obtained enable to conclude on the potential of Digital Light Processing (DLP) technol­ogy and photopolymer HTM-140, their ability to meet the requirements for not only sub- and transonic modes in a wind tunnel, but also hypersonic. KEYWORDS: rocket and spacecrafts, aerodynamic model, prototyping, 3D-printing technology, ground tests.  REFERENCES 1.Miller, Charles G. Aerothermodynamic Flight Simulation Capabilities for Aerospace Vehicles.AIAA 98-2600.Albuquerque, NM, 20th AIAA Advanced Measurements and Ground Testing technology Conference, June 15-18, 1998, 35 p. 2.AGARDograph 64.A review of measurement on AGARD calibration models.Ed.by R. Hills, Aircraft Research Association, Bedford, England, 1961, 245 p. 3.Grabchenko, A.I., Vnukov, Yu.N., Dobroskok, V. L. Integrated generative technologies: educational guide [Integrirovannye generativnye tehnologii: ucheb. posobie].Kharkov, NTU «KhPI», 2011, 416 p. 4.http://www.cybercom.ru.Last accessed 12.02.2015. 5.http://www.3D-systems.com.Last accessed 12.02.2015. The article is based on the papers, presented by the authors at the International scientific and practical conference «Rolling stock’s Design, Dynamics and Strength», dedicated to the 75th anniversary of V. D. Husidov, held in MIIT University (March, 20-21, 2014).