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TRI-D (rocket engine)
TRI-D is a 3D printed metal rocket engine.〔(UCSD students test fire 3D-printed metal rocket engine ), gizmag, October 12, 2013. ((archive ))〕〔(3D-Printed Rocket Engine Built By Students Passes Big Test (Video) ), Space.com, October 08 2013. ((archive ))〕 University of California, San Diego (UCSD) students built the metal rocket engine using a technique previously confined to NASA, using a GPI Prototype and Manufacturing Services printer〔 via the Direct metal laser sintering (DMLS) method.〔 UCSD students were the first group in the world to 3D print a rocket engine of its size, other than NASA as of February 2014.〔(UCSD group plans second 3-D printed rocket engine test to gather more data - 10News.com KGTV ABC10 San Diego ), 10News, February 25, 2014. ((archive ))〕 The Tri-D engine cost US$6,800.〔〔(University students successfully tested 3D printed rocket engine ), 3Ders, October 7, 2013. ((archive ))〕〔(Students successfully hot test 3D printed rocket engine ), design-engineering, October 10, 2013. ((archive ))〕
==Development==
The Tri-D rocket engine was designed and built with the cooperation of NASA’s Marshall Space Flight Center, to explore the feasibility of printed rocket components. It was designed to power the third stage of a Nanosat or Cubesat launcher, i.e. an engine capable of launching satellites that weigh less than 1.33 kg (2.93 lb).〔〔〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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