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

Chu Won-Shik; Beak Chang-Il; Ahn Sung-Hoon; Cho Tae-Hwan

doi:10.1007/bf02916203

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

Journal of mechanical science and technology, v.20 no.1, 2006년, pp.85 - 93

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)

Abstract ▼ AI-Helper

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.

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대상 데이터

The smallest tool diameters _나sed in this study were 100 “m~500 for flat endmill (roughing), and 200 //m for ball end mill (finishing). Aluminum 6061 T6 rod was used as the nozzle material. The 3~axis micro stage (the precision is 1 "m) and high speed spindle (max.
Igniting gun powders from the same manufacturer were filled space inside of the nozzle, and a wick was connected to the ignition gun powders. The assembled rocket was supported by plastic foam. Then nozzle was faced upward and was fixed on a digital scale that may measure _나p to 0.

이론/모형

The most critical design in a micro rocket is the geometry of micro size nozzle. Of available design methods, the method of characteristics (Anderson, 1990) was applied in this study.

참고문헌 (21)

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

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