• Defense and Technology
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• no.12 s.142
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• pp.54-59
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• 1990

명백히 현재 군사부문에서 얻어지고 있는 순수한 과학적 지식은 종래에는 민간부문의 많은 분야에서 응용될수 있을 것이다. 미사일을 공격하기 위한 고출력 자유전자 레이저는 이미 의학분야에서 응용되고 있다. 이 밖에도 다른 많은 파괴를 위한 개발노력들이 유용하게 응용될수 있다고 가정하는 것은 무리가 아니다. 이제 미국과 소련이 전략방어체제에 실체적인 발전을 이루고 있으므로 협력만이 앞으로 계속해 나갈수 있는 유일한 길이다. 무엇보다도 상호경쟁을 제거해 나감으로써 예산을 절감할수 있고, 새로운 기술의 평화적 이용을 극대화시킬수 있을 것이다

• Journal of Scientific & Technological Knowledge Infrastructure
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• s.12
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• pp.46-51
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• 2003

슈퍼컴퓨팅인프라구축사업의 필요성은 슈퍼컴퓨터가 엄밀한 정확도를 요구하는 초미세 반도체 설계, 신물질 설계 및 항공우주 산업분야로부터 거대한 기상정보 예측 등 다양한 첨단과학 분야의 연구개발에 필수 장비라는 사실에서 비롯된다. 세계 각국은 슈퍼컴퓨터를 과학기술 발전과 국가 경쟁력 확보의 전략요소로 인식하여, 슈퍼컴퓨팅, 네트워킹, 첨단 응용 및 가시화장비 등을 상호 연계한 국가(또는 지역별) 슈퍼컴퓨팅 인프라 구축을 강화하고 있다. 미국은 1990년 초부터 HPCC (고성능 컴퓨팅 및 통신) 프로그램에 매년 10억불 규모의 예산을 지속적으로 투자하여 왔다.

• Aerospace Engineering and Technology
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• v.4 no.2
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• pp.7-14
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• 2005

This paper describes development of automatic flight control system for an unmanned target drone. Current target drone is operated by pilot control of on-board servo motor via remote control system. Automatic flight control system for the target drone greatly reduces work load of ground pilot and can increase application area of the drone. Most UAVs being operated nowdays use high-priced sensors as AHRS and IMU to measure the attitude, but those are costly. This paper introduces the development of low-cost automatic flight control system with low-cost sensors. The integrated automatic flight control system has been developed. The performance of automatic flight control system is verified by flight test.

• The Korean Journal of Air & Space Law and Policy
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• v.28 no.2
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• pp.349-384
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• 2013

The Sputnik 1 launching in 1957 made the world recognize the necessity of international regulations on space development and activities in outer space. The United Nations established COPUOS the very next year, and adopted the mandate to examine legal issues concerning the peaceful uses of outer space. At the time, the military sector of the U.S.A. and the Soviet Union were in charge of the space development and they were not welcomed to discuss the prohibition of the military uses of outer space at the legal section in the COPUOS. Although both countries had common interests in securing the freedom of military uses in outer space. As the social and economic benefits derived from space activities have become more apparent, civil expenditures on space activities have continued to increase in several countries. Virtually all new spacefaring states explicitly place a priority on space-based applications to support social and economic development. Such space applications as satellite navigation and Earth imaging are core elements of almost every existing civil space program. Likewise, Moon exploration continues to be a priority for such established spacefaring states as China, Russia, India, and Japan. Recently, Companies that manufacture satellites and ground equipment have also seen significant growth. On 25 February 2012 China successfully launched the eleventh satellite for its indigenous global navigation and positioning satellite system, Beidou. Civil space activities began to grow in China when they were allocated to the China Great Wall Industry Corporation in 1986. China Aerospace Corporation was established in 1993, followed by the development of the China National Space Administration. In Japan civil space was initially coordinated by the National Space Activities Council formed in 1960. Most of the work was performed by the Institute of Space and Aeronautical Science of the University of Tokyo, the National Aerospace Laboratory, and, most importantly, the National Space Development Agency. In 2003 all this work was assumed by the Japanese Aerospace Exploration Agency(JAXA). Japan eases restrictions on military space development. On 20 June 2012 Japan passed the Partial Revision of the Cabinet Establishment Act, which restructured the authority to regulate Japanese space policy and budget, including the governance of the JAXA. Under this legislation, the Space Activities Commission of the Ministry of Education, Culture, Sports, Science, and Technology, which was responsible for the development of Japanese space program, will be abolished. Regulation of space policy and budget will be handed over to the Space Strategy Headquarter formed under the Prime Minister's Cabinet. Space Strategy will be supported by a Consultative Policy Commission as an academics and independent observers. By revoking Article 4 (Objectives of the Agency) of a law that previously governed JAXA and mandated the development of space programs for "peaceful purposes only," the new legislation demonstrates consistency with Article 2 of the 2008 Basic Space Law. In conformity with the principles laid down in the 1967 Outer Space Treaty JAXA is now free to pursue the non-aggressive military use of space. New legislation is the culmination of a decade-long process that sought ways to "leverage Japan's space development programs and technologies for security purposes, to bolster the nation's defenses in the face of increased tensions in East Asia." In this connection it would also be very important and necessary to create an Asian Space Agency(ASA) for strengthening cooperation within the Asian space community towards joint undertakings.

• Journal of Aerospace System Engineering
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• v.18 no.4
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• pp.70-80
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• 2024

In this study, we explore the purpose, origin, and history of thermal testing in the development of artificial satellite components. We seek to understand precisely the test variables associated with thermal vacuum and thermal cycle tests, including temperature margins and cycle counts, which may differ according to the development model. We analyze specifications detailed in standards from NASA, ESA, MIL, and others. Furthermore, given the recent surge in interest in CubeSats and nanosatellites, this paper aims to identify research trends in customizing satellite development projects according to their budget and duration.

• Current Industrial and Technological Trends in Aerospace
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• v.6 no.2
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• pp.22-28
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• 2008

The Policy Development Team of the Korea Aerospace Research Institute investigates the status of Korean space sector in 2007 including industry, research institutes and universities through the survey executed third time after first in 2005. In this paper the statistics of sales, budget, man power, export and import of 77 organizations is presented and the status of Korean space sector is analyzed. The total sales of space related industry in 2007 are 887.255 billion won which is increased by 26% relative to that of previous year. The total budget of research institutes and the total R&D fund of universities are 367.301 billion won and 8.441 billion won respectively. In 2007, total personnel of space sector is 2,705, as 1621 personnel in industry, 717 personnel in research institutes, 367 personnel in universities. The total number of personnel is increased by 14% in 2007 compared to the previous year.

• Aerospace Engineering and Technology
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• v.1 no.2
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• pp.57-65
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• 2002

The Electrical Power System (EPS) shall supply required power to maintain spacecraft and payload during the mission. The EPS sizing are based on space environment, satellite mission and lifetime, and allocated budgets. The type of the primary and secondary power is determined according to satellite design-level and allocated subsystem budgets. The design of EPS has closely related to system and others' subsystems design. To supply the sufficient power to the satellite, the implementation of the larger power source and energy storage is impossible actually. And there will be some problems of the attitude control of the satellite, the handling power capability of the electronic boxes, and launch vehicle selection caused by EPS oversizing. Also, the thermal control is not easy in the space by extra power. And the maintenance of the satellite within the specific orbit from orbit-drag is a big design burden of the thruster. So the various technologies have been developed to optimize the EPS sizing and to operate the power system efficiently.

• Bulletin of the Korean Space Science Society
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• 2009.10a
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• pp.48.2-48.2
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• 2009

아리랑위성 2호는 2006년에 발사되어 정상 운영 중이다. 아리랑 위성 5호와 아리랑위성 3호는 각각 2010년과 2011년에 발사될 예정이다. 아리랑위성 2호의 운영시스템은 하나의 위성을 운영하는 개념에 따라서 개발되었다. 그러나 아리랑위성 3호 운영시스템과 아리랑위성 5호 운영시스템은 다중위성운영 개념을 도입하여 개발되고 있다. 다중위성운영 개념이란 (1) 임무를 준비하고 수행하기 위해서 충분한 임무 요소, 시설 요소, 인원 및 운영절차를 확보한다. (2) 각각의 운영시스템은 독자적인 임무 요소, 시설 요소, 인원 및 절차를 소유하나 하위 상세 부분들은 다른 운영시스템과 공유된다. 다중위성운영의 경우에 장비, 서브시스템, 운영절차 등이 다를 수 있고, 독자적인 운영시스템 구성이기 때문에 운영이 복잡하고 운영비용이 많이 든다. 이 논문에서는 이러한 점을 개선시키기 위해서 다중임무운영 설계개념을 제시한다. 다중임무운영 개념은 (1) 임무를 준비하고 수행하기 위해서 최근 수정 및 변경된 임무 요소, 시설 요소, 인원 및 운영절차를 확보한다. (2) 최근 수정 및 변경된 임무 요소, 시설 요소, 인원 및 운영 절차는 이전 개발된 운영시스템이 수행하는 기능을 지원한다. 이러한 개념의 다중임무운영은 비슷한 임무와 기능을 가진 위성들이 같은 운영자와 조직에 의해서 운영될 때 잘 적용될 수 있다. 다중임무운영시스템은 각각의 임무에만 사용되는 모듈과 다른 임무와 공통으로 사용되는 모듈로 구성된다. 이러한 개념에 따라서 운영시스템을 개발하면 개발하기 위한 시간과 예산을 크게 감소시킬 수 있다. 또한, 발사 이후 운영의 편리, 운영인력의 효율적인 활용 및 유지보수의 편리성으로 인해서 운영 상황이 크게 개선된다.

• Journal of Space Technology and Applications
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• v.2 no.3
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• pp.195-205
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• 2022

Space exploration is an area where international cooperation takes place more actively than any other space activities such as Earth observation, communication and navigation. This is because a country cannot afford a huge budget to have full infrastructure for deep space exploration, such as a heavy launch vehicle, communication and energy infrastructure, and human habitats, and has learned that it is not sustainable. Korea expressed its willingness to join humanity's epic exploration journey by signing the Artemis Accords in 2021 and launching Danuri lunar orbiter in 2022. The beginning of space exploration means that Korea's space activities have expanded beyond the stage of focusing only on technology development to set norms necessary to accompany other countries and cooperate diplomatically to solve exposed problems. This paper analyzed European space policy and space exploration, which are most actively participating in the Artemis Program and exerting diplomatic power in the space field, from the perspective of science and technology diplomacy. The suggestions for Korea's space exploration strategy from the perspective of science and technology diplomacy were drawn by examining the international cooperation strategies in Europe's space activities ranging from space policy, space strategy, and space exploration program to project units.

• Journal of Astronomy and Space Sciences
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• v.18 no.3
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• pp.219-230
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• 2001

Far-ultraviolet IMaging Spectrograph (FIMS) is under development as the main pay-load of the first Korean science satellite, KAISTSAT-4. An extensive sensitivity and error budget analyses of FIMS optical system have been performed. As an way of estimating aggregate effects of all tolerances, a Monte Carlo simulation is used. The simulation result shows that the optical performance required from the science objectives is achieved within the probability higher than 99.9%.