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Professor Sejin Kwon develops thruster for small satellite
- World’s first application of high-performance liquid propellant to small satellite thruster
- Show about four times higher thrust performance than the cold gas thruster of University of Surrey, the state-of-the-art technology in the field of small satellite
- Expect a considerable contribution to the extension of the lifespan and mission range of small satellites
The team of Professor Sejin Kwon (Department of Aerospace Engineering in KAIST/ President Nam Pyo Suh) and Space Solution Inc. (President Jaehun Lee) have jointly developed a micro thruster for small satellite motion-control.
Kwon"s team has succeeded in developing an integrated thruster which can be mounted on a satellite by integrating catalyst reactor and propellant-supplying system, which are the core technologies of small satellite thruster system.
For the first time in the world, Kwon’s team employs a high-performance liquid propellant to the thruster.
In the thruster, liquid-state hydrogen peroxide is dissolved into vapor and oxygen at the catalytic layer to emit a huge amount of heat. And, the emitted heat is converted into the kinetic energy of the gas to produce a propulsive force.
This thruster can perform the motion-control of a several tens-kilogram satellite with a propulsive force of less than one Newton and shows about four times higher thrust performance than the cold gas thruster of University of Surrey, who possesses the state-of-the-art technologies in the field of small satellites.
Professor Kwon said, “Although University of Surrey has also tried to develop a similar system, it’s not yet solved the problem on catalytic reactor bed. I expect this thruster will considerably contribute to the extension of the lifespan and mission range of scientific small satellites. Also, this thruster can be employed for the attitude control of the upper end of the launch vehicle, which is now being developed by the Korean Aerospace Research Institute (KARI).”
<Thruster module for small satellite application>
2006.09.05 View 13984 -
Professor Kim Donates W5 Bil. to KAIST
Korea Times 2004.5.21
By Kim Tae-gyu / Staff Reporter
A professor from the Korea Advanced Institute of Science and Technology (KAIST) has donated his inherited wealth of 5 billion won to the state-owned institute.
The KAIST announced professor Kim Dong-won contributed 5 billion won in properties and cash, which he inherited from his father, who passed away late last year.
``Professor Kim has asked us to spend the contribution in the development of Korea’s science in accordance with the late Kim’s will,’’ said Park Jae-wook, a KAIST spokesman.
Park added Kim had tried to remain anonymous, but his identity was revealed by some local newspapers. Kim is currently in the United States as he is out of his post on an interim basis and will come back to Korea in August.
Four billion won of the donation will be used to set up scholarships, which will endow 20 million won each to 10 KAIST students every year. The remaining 1 billion won will help invite illustrious scholars to the institute.
Adding to the good news for KAIST, Lee Chong-moon, chairman of the U.S.-based venture company Ambex, has also donated 2 billion won.
The 76-year-old Lee called for the KAIST to inspire a sprit among students by establishing a management center named after him.
2004.05.21 View 15831