Journal of Mechanical Science and Technology

The Korean Society of Mechanical Engineers (대한기계학회)
권호 표지

Rapid Prototyping and Testing of 3D Micro Rockets Using Mechanical Micro Machining

  • Chu Won-Shik (School of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Beak Chang-Il (Doowon Heavy industrial Co., Ltd.) ;
  • Ahn Sung-Hoon (School of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Cho Tae-Hwan (School of Mechanical and Aerospace Engineering, Gyeong Sang National University)
  • Published : 2006.01.01
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Abstract

The trend of miniaturization has been applied to the research of rockets to develop prototypes of micro rockets. In this paper, the development of a web-integrated prototyping system for three-dimensional micro rockets, and the results of combustion tests are discussed. The body of rocket was made of 6061 aluminum cylinder by lathe process. The three-dimensional micro nozzles were fabricated on the same aluminum by using micro endmills with ${\phi}100{\mu}m{sim}{\phi}500{\mu}m$ diameter. Two types of micro nozzle were fabricated and compared for performance. The total mass of the rockets was 7.32 g and that of propellant (gun powder) was 0.65 g. The thrust-to-weight ratio was between 1.58 and 1.74, and the flight test with 45 degree launch angle from the ground resulted in $46\;m{\sim}53\;m$ of horizontal flight distance. In addition, ABS housing for the micro machined rocket was fabricated using Fused Deposition Modeling (FDM). A web-based design, fabrication, and test system for micro nozzles was proposed to integrate the distributed hardware resources. Test data was sent to the designer via the same web server for the faster feedback to the rocket designer.

Keywords

References

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