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논문 기본 정보

자료유형
학술저널
저자정보
Young-Joo Song (Korea Aerospace Research Institute) Jonghee Bae (Korea Aerospace Research Institute) 홍승범 (한국항공우주연구원) Jun Bang (Korea Aerospace Research Institute) Donghun Lee (Korea Aerospace University)
저널정보
한국우주과학회 Journal of Astronomy and Space Sciences Journal of Astronomy and Space Sciences Vol.40 No.3
발행연도
2023.9
수록면
123 - 129 (7page)
DOI
https://doi.org/10.5140/JASS.2023.40.3.123

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This paper presents an analysis of the trans-lunar trajectory insertion performance of the Korea Pathfinder Lunar Orbiter (KPLO), the first lunar exploration spacecraft of the Republic of Korea. The successful launch conducted on August 4, 2022 (UTC), utilized the SpaceX Falcon 9 rocket from Cape Canaveral Space Force Station. The trans-lunar trajectory insertion performance plays a crucial role in ensuring the overall mission success by directly influencing the spacecraft’s onboard fuel consumption. Following separation from the launch vehicle (LV), a comprehensive analysis of the trajectory insertion performance was performed by the KPLO flight dynamics (FD) team. Both orbit parameter message (OPM) and orbit determination (OD) solutions were employed using deep space network (DSN) tracking measurements. As a result, the KPLO was accurately inserted into the ballistic lunar transfer (BLT) trajectory, satisfying all separation requirements at the target interface point (TIP), including launch injection energy per unit mass (C3), right ascension of the injection orbit apoapsis vector (RAV), and declination of the injection orbit apoapsis vector (DAV). The precise BLT trajectory insertion facilitated the smoother operation of the KPLO’s remainder mission phase and enabled the utilization of reserved fuel, consequently significantly enhancing the possibilities of an extended mission.

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