Journal of the Korean Society for Aeronautical & Space Sciences (한국항공우주학회지)

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
권호 표지
DOI QR코드

DOI QR Code

Analysis of Thrust Misalignments and Offsets of Lateral Center of Gravity Effects on Guidance Performance of a Space Launch Vehicle

추력비정렬 및 횡방향 무게중심 오프셋에 의한 우주발사체 유도 성능 영향성 분석

  • Received : 2019.04.15
  • Accepted : 2019.07.18
  • Published : 2019.08.01
Download PDF
⟨ Previous Next ⟩

Abstract

This paper investigates the effects of thrust misalignments and offsets of the lateral center of gravity of a space launch vehicle on its guidance performance. Sensitivity analysis and Monte Carlo simulations are applied to analyze their effects by computing changes in orbit injection errors when including the error sources. To compensate their effects, the attitude controller including an integrator additionally and the Steering Misalignment Correction (SMC) routine of the Saturn V are considered, and then Monte Carlo simulations are performed to evaluate their performances.

본 논문에서는 추력비정렬 및 발사체 횡방향 무게중심 오프셋에 의한 유도 성능 영향성에 대해서 다루었다. 민감도 분석 방법과 몬테카를로 시뮬레이션 방법을 적용하여 추력비정렬 및 횡방향 무게중심 오프셋에 의한 궤도 투입 오차 변화를 계산함으로써 영향성을 분석하였다. 추력비정렬 및 횡방향 무게중심 오프셋에 의한 영향을 보상하기 위한 방안으로서 적분제어기를 추가하는 방법과 Saturn-V 발사체의 비정렬 보상 알고리듬인 SMC 방법의 적용을 고려해 보았고 몬테카를로 시뮬레이션을 통해 효용성을 평가하였다.

Keywords

References

  1. Martin, D. T., Sievers, R. F., O'brien, R. M., and Rice, A. F., "Saturn V Guidance, Navigation, Targeting," Journal of Spacecraft and Rockets, Vol. 4, No. 7, 1967, pp. 891-898. https://doi.org/10.2514/3.28984
  2. Chandler, D. C., and Smith, I. E., "Development of the Iterative Guidance Mode With its Application to Various Vehicles and Missions," Journal of spacecraft and rockets, Vol. 4, No. 7, 1967, pp. 898-903. https://doi.org/10.2514/3.28985
  3. Haeussermann, W., "Guidance and Control of Saturn Launch Vehicles," AIAA 2nd Annual Meeting, July 1965, AIAA-65-304.
  4. Horn, H. J., Chandler, D. C., and Buckelew, V. L., "Iterative Guidance Applied to Generalized Missions," Journal of Spacecraft and rockets, Vol. 6, No. 1, 1969, pp. 4-8. https://doi.org/10.2514/3.29523
  5. Song, E. J., Cho, S., and Sun, B. C., "A Study on an Acceleration and Specific Impulse Estimation Method Based on the Reciprocal Function of Acceleration," Proceeding of The Korean Society of Propulsion Engineers Spring Conference, May 2018, KSPE 2018-1287.
  6. Hanson, J. M., and Hall, C. E., "Learning about Ares I from Monte Carlo simulation," AIAA Guidance, Navigation and Control Conference and Exhibit, August 2019, AIAA 2008-6622.
  7. Hanson, J. M., and Beard, B. B., "Applying Monte Carlo simulation to launch vehicle design and requirements verification," Journal of Spacecraft and Rockets, Vol. 49, No. 1, 2012, pp. 136-144. https://doi.org/10.2514/1.52910