• Title/Summary/Keyword: KSLV-2

Search Result 151, Processing Time 0.027 seconds

Radiated Emission / Susceptibility Tests for the KSLV-I 2nd Stage Engineering Model (KSLV-I 2단부 엔지니어링 모델 복사성 방사/감응 시험)

  • Ji, Ki-Man;Lee, Soo-Jin;Chung, Eui-Seung
    • Aerospace Engineering and Technology
    • /
    • v.6 no.1
    • /
    • pp.173-181
    • /
    • 2007
  • Radiated emission / susceptibility performance of the KSLV-I 2nd stage which are controlled from the unit level to the system level should be examined and managed all over the frequency ranges in order to ensure the normal operation of the SC, the 1st stage of the KSLV-I, ground support equipments which are installed at the space center, and other wireless communication networks. Not only unintentional electric field emissions from the KSLV-I system and its subsystems should be restricted to the levels less than the limits specified in the EMC requirements, but also proper test and evaluation method should be established, respectively. In this paper, radiated emission/susceptibility test limits, method, and test results of the KSLV-I 2nd stage engineering model are presented.

  • PDF

Dynamic Analysis and Linear Model Estimation for Flight Model TVC System of KSLV-I Stage-II (KSLV-I 2단부 비행용 TVC 동특성 분석 및 선형모델 추정)

  • Sun, Byung-Chan;Park, Yong-Kyu;Oh, Choong-Seak;Roh, Woong-Rae
    • Aerospace Engineering and Technology
    • /
    • v.8 no.2
    • /
    • pp.83-91
    • /
    • 2009
  • This paper concerns the dynamic property of TVC system in the upper stage of KSLV-I. The minimum bandwidth of TVC system is predicted by gathering and comparing the dynamic test data through whole development phases of KSLV-I. The linear models which approximate the dynamic data are also suggested. It is shown that the minimum bandwidth of KSLV-I TVC system is guaranteed over 6.0 Hz at one degree command. It is also shown that the linear model of KSLV-I TVC dynamics takes the form of the transfer function with an 8-th order denominator and a 2-nd order numerator. These results will play an important role in analyzing the flight stability and performance of KSLV-I.

  • PDF

Prediction of Lift-off Acoustic Loads of KSLV-I and Its Comparison with Flight Measurements (KSLV-I 외부 음향 하중 예측 및 비행 시험 결과와의 비교)

  • Park, Soon-Hong;Seo, Sang-Hyun;Jang, Young-Soon
    • Aerospace Engineering and Technology
    • /
    • v.10 no.1
    • /
    • pp.13-19
    • /
    • 2011
  • Lift off acoustic loads of KSLV-I were predicted by the modified NASA SP-8072 source distribution method (method 2) and the result was compared with those of measurements in the flight test of KSLV-I. In the second flight test, lift off acoustic loads were measured by outer microphones attached on the cable mast. The onboard data measuring outer acoustic pressure at the interstage of KSLV-I also can be obtained. The predicted result showed very similar peak and the shape of spectrum when compared with the measured spectrum and a margin about +7 dB.

The Flight Test of the KSLV-I Electronic Systems Using a Light Airplane (경항공기를 이용한 KSLV-I 전자탑재장비 비행시험)

  • Ji, Ki-Man;Lee, Soo-Jin;Chung, Eui-Seung
    • Aerospace Engineering and Technology
    • /
    • v.7 no.1
    • /
    • pp.142-150
    • /
    • 2008
  • In order to ensure the individual and mutual performances among the telemetry system, tracking system, flight termination system, GPS, and inertial navigation & guidance system which are installed in the KSLV-I 2nd stage and ground equipment of the Naro space center, flight test using a light airplane is required. Since the high degree of test efficiency is fulfilled through the minute plan and analysis about selection of the equipment which are applicable to the test, harness, operation strategy, and antenna installation. KSLV-I communication environment and flight profile should be precisely taken into account during the flight test. In this document, overall aspect of the KSLV-I 2nd stage equipment specification, a rack for the installation, harness, the airplane specification, and flight route which are required for the effective flight test are presented.

  • PDF

Conceptual Design of a Launch Vehicle for Lunar Exploration by Combining Naro-1 and KSLV-II (나로호와 한국형발사체를 연계한 달탐사 발사체 개념설계)

  • Yang, Won-Seok;Kim, So-Yeon;Choi, Jeong-Yeol
    • Journal of the Korean Society for Aeronautical & Space Sciences
    • /
    • v.42 no.8
    • /
    • pp.654-660
    • /
    • 2014
  • In this paper, a conceptual design of a launch vehicles is proposed by combining Naro-1 and KSLV-II. For trans-lunar injection (TLI) to lunar orbit at 300 km LEO, the target performance is defined same as that of KSLV-II, which delivers an object of 2.6 tons into 300 km LEO. The proposal launch vehicle concept of this study is combination of 1st stage of KSLV-I and 2-3rd stage of KSLV-II. Thus, it is possible to reduce the development time and also could expand the options for national launch vehicle capabilities with proven technologies.

Systems Engineering Processes for KSLV-II Program (한국형발사체개발사업 시스템엔지니어링 프로세스)

  • Park, Chang-Su;Kim, Keun-Taek
    • Journal of the Korean Society of Systems Engineering
    • /
    • v.10 no.2
    • /
    • pp.81-87
    • /
    • 2014
  • The Korea space launch vehicle-II (KSLV-II) program aims at developing a national launch vehicle system capable of launching 1.5 ton satellite into a sunsynchronous orbit. It is the succeeding program to the Naro launch vehicle program. The KSLV-II is a large-scale complex system which requires a systematic approach to all parts of the program. The KSLV-II program is currently developing a tailored systems engineering process for its need. It references practices and lessons learned from developing Naro launch vehicle. Standardized NASA processes and INCOSE processes were also referenced and compared during development of the process framework. This paper introduces the systems engineering processes developed for the KSLV-II program.

Safety Management for KSLV-I, Naro (KSLV-I 나로호의 발사체 안전 관리)

  • Cho, Sang-Yeon;Shin, Myung-Ho;Oh, Seung-Hyup;Kim, Young-Mok
    • Aerospace Engineering and Technology
    • /
    • v.9 no.2
    • /
    • pp.198-203
    • /
    • 2010
  • KSLV-I, a.k.a. Naro is the 1st Korean satellite launch vehicle, which was launched at Naro space center by Korea Aerospace Research Institute (KARI) in AUG. 2009, and JUN. 2010. Although the missions of 1st and 2nd launch of KSLV-I - inject the space craft into the designated orbit - were not successful, safety of launch vehicle was accomplished through the cooperation with the Russian partner Khrunichev Space Research and Production Center (KhSC). Both parties co-developed the safety management program to ensure launch safety. In this paper, the analysis and contents of safety program are illustrated.

Modal Test of the 2nd stage structure of KSLV-I (KSLV-I 2단부 구조체 모드 시험)

  • Seo, Sang-Hyeon;Jeong, Ho-Kyeong;Youn, Se-Hyun;Park, Soon-Hong;Jang, Young-Soon
    • Aerospace Engineering and Technology
    • /
    • v.6 no.1
    • /
    • pp.114-119
    • /
    • 2007
  • This paper introduces modal test of the 2nd stage structure of KSLV-I which is composed to satellite, PLA(Payload Adapter), EB(Equipment Bay), KMS(Kick Motor Support) and KM(Kick Motor) without PLF(Payload Fairing). In this test, to simulate free-free boundary condition, test object was hung by 4 bungee cords and excited by using impact hammer. From this test, dynamic properties of the 2nd stage structure of KSLV-I can be obtained. Modal test data are analyzed by using TDAS(Test Data Analysis Software). As the result, modal parameters and mode shapes below 100Hz of the 2nd stage of KSLV-I were identified.

  • PDF

The Result in Quality Management Activity of Propellant and Compressed Gases during the Operation of KSLV-I (KSLV-I 운용에서의 추진제 및 고압가스 품질관리 활동 결과)

  • Jung, Young-Suk;Kang, Sun-Il;Oh, Seung-Hyub;Chung, Eui-Seung
    • Aerospace Engineering and Technology
    • /
    • v.10 no.2
    • /
    • pp.133-145
    • /
    • 2011
  • This paper is about the results in Qualification Management activity performed between the Autonomous Test(AT) season(August. 2008) of Launch Complex and the 2nd flight test season(June. 10, 2010) of KSLV-I. All cryogenic fluids(LOX, $LN_2$) and compressed gases(Air, $GN_2$, GHe) were qualified by qualification management activity during AT(Autonmous Test), QT(Qualification Test) season for LP(Launch Pad) and LVAB(Launch Vehicle Assembly Building) and FT(Flight Test) season of KLSV-I. As the results, total 428 times of check analysis and 111 times of full analysis were performed.

Technical Safety Management for KSLV-I (KSLV-I의 기술적 안전 관리)

  • Cho, Sang-Yeon;Kim, Yong-Wook;Lee, Jeong-Ho;Shin, Myoung-Ho;Oh, Seung-Hyub
    • Proceedings of the Korean Society of Propulsion Engineers Conference
    • /
    • 2010.11a
    • /
    • pp.682-685
    • /
    • 2010
  • KSLV-I is the 1st Korean satellite launch vehicle, which was launched at Naro space center by Korea Aerospace Research Institute (KARI) in AUG. 2009, and JUN. 2010. Although the missions of 1st and 2nd launch of KSLV-I were not successful, safety of launch vehicle was accomplished through the cooperation with the Russian partner Khrunichev Space Research and Production Center (KhSC). Both parties co-developed the technical safety management program to ensure launch safety. In this paper, the analysis and contents of safety program are illustrated.

  • PDF