Non-tangential Injection

Author: Tianjiang Shuo

Website: https://cislunarspace.cn

Definition

An injection strategy in interior transfers where the impulse direction is not perpendicular to the position vector. The spacecraft first passes near the Moon, then winds around the Earth-Moon system before being captured by the DRO. Achieves fuel consumption comparable to exterior transfers by leveraging natural gravitational dynamics, but requires longer flight time.

Application Value

在轨道力学分析中，This摄动因素is轨道预报误差的main来源之一。准确建模This效应有助于提高轨道预测精度，支持轨道维持和碰撞预警等应用。

Related Concepts

• 地心天体参考框架（Geocentric Celestial Reference Frame）
• 运行轨道库（Operational Orbit Library）
• 临界轨道（Critical Orbit）
• 约束转化非线性规划（Constraint Conversion to Nonlinear Programming）

References

• Tan Minghu et al., 2014, Transfer to long term distant retrograde orbits around the Moon