Week 8 - Mark F.

I made progress on writing the Success criteria and testing section in chapter 2 of our report. After getting the solar panel from Dr. Hall I was able to research and compare the solar panel to solar panels that are used on mars rovers for reference.

2.4 Success Criteria and Testing

Astraeus is intended to be idealized as a prototype solar farm cleaning rover designed to clean solar panels on Mars. By actively removing dust, Astraeus addresses a major issue that has affected previous solar-powered missions. To demonstrate its functionality in an Earth-based setting, a Solartech Power W-Series SPM030P-WP-F 30W 24V polycrystalline solar panel is used as a test platform [8]. While this panel does not replicate the exact design of those used on Mars, it provides a practical means to evaluate Astraeus’ cleaning technology in a controlled environment.

Figure 2.1 - Solartech SPM030P-WP-F Polycrystalline Solar Panel

2.4.1 Comparison To Mars Rover Solar Panels

The solar panels utilized on Mars rovers are engineered to endure the planet's extreme conditions, including high radiation levels, low temperatures, and frequent dust storms [9]. The following table provides a comparison between the demonstration panel and those employed on Mars rovers, emphasizing differences in material composition, efficiency, cleaning mechanisms, and power output.

Table 2.4 - Solar Panel Comparison

Feature (Specs)	Solartech Power W-Series SPM030P-WP-F	Mars Rover Solar Panels  (e.g., Spirit & Opportunity)
Cell Type	Polycrystalline silicon	Triple-junction GaInP/GaAs/Ge
Power Output	30W	Approximately 140W (initial)
Voltage	24V	Variable
Efficiency	Approximately 14-15%	Higher Efficiency due to advanced materials
Cleaning System	None (Manually cleaned during testing)	None; relied on natural wind
Durability	Designed for terrestrial conditions	Engineering for Martian Environment

The Solartech Power W-Series SPM030P-WP-F serves as an effective physical representation for testing the Astraeus rover's cleaning capabilities. While there are inherent differences between this panel and the advanced solar arrays used on Mars rovers, the fundamental challenge of dust accumulation remains consistent. By addressing this issue through active cleaning, Astraeus has the potential to significantly enhance the longevity and efficiency of solar-powered missions on Mars.