Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Analysis of Orbit Injection Performance of KSLV-II by Weight Reduction

경량화에 의한 한국형발사체 궤도투입성능 향상 분석

  • Kim, Hye-Sung (Department of Aerospace Engineering, Pusan National University) ;
  • Yang, Seong-Min (Department of Aerospace Engineering, Pusan National University) ;
  • Choi, Jeong-Yeol (Department of Aerospace Engineering, Pusan National University)
  • Received : 2017.08.29
  • Accepted : 2018.05.06
  • Published : 2018.10.01
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Abstract

A trajectory analysis program was developed to predict KSLV-II (Korea Space Launch Vehicle-II) performance with the reducing weight. The program estimates the LEO (Low Earth Orbit) / SSO (Sun-Synchronous Orbit) injection performance, which is determined as payload weight for the orbits, with decreasing the structural ratio or increasing rocket engine power. It is expected that the KSLV-II can transport up to 4.5 tons, 3 tons of space payloads at LEO, SSO with a reduced structural ratio by 60% of the original. It also shows that the KSLV-II can transport up to 3.65 tons at SSO by applying advanced engines of 90 tonf, 10 tonf class with the reduced structure.

발사체 경량화에 따른 한국형발사체 투입성능 예측을 위해 궤적계산 프로그램을 작성하였다. 이 프로그램을 이용하여 단 별 구조비 감소 및 엔진 성능 개선에 따른 지구 저궤도 및 태양동기궤도 투입성능을 추정하였으며, 목표궤도에 투입 가능한 페이로드 중량을 성능 판단지표로 두었다. 한국형발사체의 구조비를 기존 대비 60% 수준까지 경량화 할 경우, 지구 저궤도 및 태양동기궤도에 최대 4.5톤, 3톤의 우주화물을 수송할 수 있을 것으로 보인다. 구조 경량화와 함께 90톤급, 10톤급의 개선 엔진을 탑재할 경우 태양동기궤도에 최대 3.65톤의 페이로드를 투입할 수 있다.

Keywords

References

  1. U.S. National Aeronautics and Space Administration, "Commercial Orbital Transportation Services: A New Era in Spaceflight," NASA/SP-2014-617, 2014.
  2. U.S. Federal Aviation Administration, "2015 Commercial Space Transportation Forecasts," Washington, D.C., U.S.A., Apr. 2015.
  3. "Spaceflight 101 Launch Vehicle Library," retrieved 27 Jan. 2018 from http://spaceflight101.com/spacerockets.
  4. "SpaceX Completes Development of Merlin Regeneratively Cooled Rocket Engine," retrieved 27 Jan. 2018 from http://www.spacex.com/press/2012/12/19/spacex-completes-development-merlin-regeneratively-cooled-rocket-engine.
  5. "SpaceX Falcon 9 product page," retrieved 27 Jan. 2018 from http://www.spacex.com/falcon9.
  6. Association of the Relevant Government Ministries of Republic of Korea, "Middle and Long Term Space Development Plan," Nov. 2013.
  7. Roh, W.R., Cho, S.B., Sun, B.C., Choi, K.S., Jung, D.W., Park, C.S., Oh, J.S. and Park, T.H., "Mission and System Design Status of Korea Space Launch Vehicle-II succeeding Naro Launch Vehicle," Proceedings of the KSAS Fall Conference, pp. 233-239, Nov. 2012.
  8. Jung, H.H., Lee, Y.R., Yoo, J.T., Yoon, J.H., Min, K.J. and Lee, H.S., “Status of Friction Stir Welding for Weight Reduction of Aerospace Vehicle,” Current Industrial and Technological Trends in Aerospace, Vol. 12, No. 2, pp. 158-165, 2014.
  9. Roh, W.R., "A Study on the Trajectory Optimization and Inertial Guidance Algorithm Design for Satellite Launch Vehicles," Ph.D. Dissertation, Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul, Korea, 2001.
  10. Tahk, M.J., Ahn, J.M., Hong, S.M., Bang, J., Lee, D.Y., Lee, J.Y. and Hong, S.G., "A Feasibility Analysis on Domestic Own Development of Geostationary Earth Orbit Launch Vehicle," Proceedings of the KSAS Fall Conference, pp. 929-932, 2014.
  11. Yang, W.S. and Choi, J.Y., “Performance Analysis of KSLV-II Launch Vehicle with Liquid Rocket Boosters,” Journal of the Korean Society for Aeronautical and Space Sciences, Vol. 42, No. 7, pp. 544-551, 2014. https://doi.org/10.5139/JKSAS.2014.42.7.544
  12. Fleeman, E.L., Tactical Missile Design, AIAA Education Series, American Institute of Aeronautics and Astronautics Inc., Reston, V.A., U.S.A., 2001.
  13. Hong, M., Yang, S.M., Kim, H.S., Yoon, Y. and Choi, J.Y., “Comparison of the Mission Performance of Korean GEO Launch Vehicles for Several Propulsion Options,” Journal of the Korean Society of Propulsion Engineers, Vol. 21, No. 2, pp. 60-71, 2017. https://doi.org/10.6108/KSPE.2017.21.2.060
  14. Cho, S.J., Shu, J.I., Maw, A.A., Lee, J.W. and Kim, S.H., "Three-dimensional space launch trajectory optimization and development framework," Proceedings of the KSPE Spring Conference, pp. 616-621, 2015.
  15. Noh, W.R., Kim, J.Y. and Min, B.J., "Trajectory Design and Velocity Impulse Analysis of Reusable Launch Vehicles," Proceedings of the KSAS Spring Conference, pp. 160-162, Apr. 2017.