Journal of Mechanical Science and Technology

, Volume 20, Issue 1, pp 85–93 | Cite as

Rapid prototyping and testing of 3d micro rockets using mechanical micro machining

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


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 φ100μm~φ500 μm 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~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.

Key Words

Micro Rocket Micro Machining Rapid Prototyping Web-based 



Mach angle


Angle of flow velocity from thex axis


Prandtl-Meyer function


Mass of rocket


Mass of propellant


Mass flow rate


Total impulse


Specific impulse


Max thrust


Effective burning Time


Effective thrust


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Copyright information

© The Korean Society of Mechanical Engineers (KSME) 2006

Authors and Affiliations

  • Won-Shik Chu
    • 1
  • Chang-Il Beak
    • 2
  • Sung-Hoon Ahn
    • 1
  • Tae-Hwan Cho
    • 3
  1. 1.School of Mechanical and Aerospace EngineeringSeoul National UniversityKwanak-Gu, SeoulKorea
  2. 2.Doowon Heavy industrial Co., Ltd.Sachon, GyeongnamKorea
  3. 3.School of Mechanical and Aerospace EngineeringGyeong Sang National UniversityJinju, GyeongnamKorea

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