Initial trajectory design of low-thrust spacecraft considering attitude constraints

Area of Science:

• Aerospace Engineering
• Astrodynamics
• Space Mission Design

Background:

• Spacecraft fuel, particularly for attitude control, is critical for deep space missions.
• Existing trajectory optimization methods may not fully account for attitude constraints, impacting mission efficiency.

Purpose of the Study:

• To develop a shape-based trajectory optimization algorithm for low-thrust spacecraft that incorporates attitude constraints.
• To improve the accuracy of initial transfer trajectory design for deep space exploration.

Main Methods:

• A novel shape-based trajectory optimization algorithm was developed.
• The algorithm considers constraints on the rate and range of change in the propulsion acceleration direction.
• Simulations were conducted comparing trajectories with and without attitude constraints.

Main Results:

• The proposed algorithm yields more accurate transfer trajectories by integrating attitude constraints.
• Considering spacecraft attitude constraints is crucial for effective initial transfer trajectory design.
• The method demonstrates significant importance for high-precision trajectory optimization in deep space missions.

Conclusions:

• The developed algorithm enhances trajectory optimization for low-thrust spacecraft by including attitude constraints.
• This approach is vital for improving the precision and success of deep space exploration missions.
• Accurate initial trajectory design is essential for efficient fuel usage and mission completion.