Throttle Factor

Author: Tianjiang Shuo

Website: https://cislunarspace.cn

Definition

A dimensionless control variable for the thrust magnitude of a low-thrust engine, ranging from 0 (off) to 1 (full thrust). Its optimal value is determined by the switching function, enabling energy-optimal or fuel-optimal control.

Application Value

This concept has practical applications in cislunar space science and engineering. Related research supports the planning, implementation, and operations of cislunar missions, forming an integral part of the knowledge system in this field.

Related Concepts

• Multiple Segment Trajectory Design
• Zero-Velocity Surface
• Null Vector
• Circular Restricted Three-Body Problem

References

• Tu et al. 2025, Optimal control for low-thrust collision avoidance in CRTBP