What is the main task of India's third moon mission which could not be achieved in its earlier mission? List the countries that have achieved this task. Introduce the subsystems in the spacecraft launched and explain the role of the 'Virtual Launch Control Centre' at the Vikram Sarabhai Space Centre which contributed to the successful launch from Sriharikota.

Introduction

India's Chandrayaan-3, launched on July 14, 2023, represents a significant milestone in India's space exploration journey. Its primary objective is to achieve a soft landing on the Moon's surface, a feat that eluded its predecessor, Chandrayaan-2, in 2019 due to a last-minute technical glitch. This mission underscores India's commitment to advancing its space technology and scientific research.

Key Dimensions of Chandrayaan-3 at a Glance

Main Task of Chandrayaan-3 and Its Significance

• Soft Landing on the Moon:

  • Chandrayaan-3 aims to achieve a controlled and precise landing on the Moon's south polar region, a challenging terrain with potential water ice deposits.
  • This task is critical for enabling in-situ scientific experiments and future lunar exploration missions.
  • Chandrayaan-2's lander, Vikram, failed to achieve this due to a loss of communication during its descent phase.

• Significance:

  • A successful soft landing would make India the fourth country to achieve this feat, showcasing its indigenous technological capabilities in space exploration.
  • It would also contribute to the global understanding of the Moon's geology, mineralogy, and potential resources.

Countries That Have Achieved a Soft Landing on the Moon

Subsystems in Chandrayaan-3 Spacecraft

The Chandrayaan-3 spacecraft comprises three key subsystems, each playing a vital role in the mission's success:

1. Propulsion Module

• Role:
  • Provides the thrust required to transport the lander and rover from Earth to the Moon's orbit.
  • Equipped with a Spectro-polarimetry of Habitable Planet Earth (SHAPE) payload to study Earth's atmosphere.

2. Lander Module (Vikram)

• Role:
  • Facilitates the soft landing on the Moon's surface.
  • Equipped with advanced sensors like Laser Doppler Velocimeter, Hazard Detection Cameras, and a Laser Altimeter for precise navigation and landing.

3. Rover (Pragyan)

• Role:
  • Conducts in-situ scientific experiments on the lunar surface.
  • Analyzes the Moon's soil composition, mineralogy, and atmospheric conditions.

Role of the Virtual Launch Control Centre at VSSC

The Virtual Launch Control Centre (VLCC) at the Vikram Sarabhai Space Centre (VSSC) played a pivotal role in ensuring the success of Chandrayaan-3's launch:

• Real-time Monitoring:

  • Enabled remote monitoring of the launch vehicle's health and performance parameters.
  • Facilitated seamless coordination between multiple teams across different ISRO centers.

• Simulation and Testing:

  • Conducted extensive simulations to identify and rectify potential anomalies in the launch sequence.
  • Ensured the robustness of the GSLV Mk III (LVM3) rocket used for the mission.

• Operational Efficiency:

  • Reduced the need for physical presence at the launch site, enhancing operational flexibility and decision-making speed.
  • Played a critical role in the precise execution of the launch timeline.

Way Forward

• Future Lunar Missions:

  • Building on Chandrayaan-3's success, India can focus on human lunar exploration and resource utilization missions.
  • Collaboration with international space agencies can further enhance India's capabilities.

• Technological Advancements:

  • Continued investment in AI-based navigation systems, autonomous landing technologies, and miniaturized scientific instruments will be crucial for future missions.

Conclusion

Chandrayaan-3 is a testament to India's indigenous space technology and its aspiration to become a global leader in space exploration. By achieving a soft landing on the Moon, India not only joins an elite group of nations but also paves the way for scientific breakthroughs and future interplanetary missions, aligning with the vision of Atmanirbhar Bharat and the UN Sustainable Development Goals (SDG 9: Industry, Innovation, and Infrastructure).