Chandrayaan-3:ISRO's Safe Disposal of LVM-3 Rocket Upper Stage Highlights Responsible Space Practice

In a recent development, the Indian Space Research Organisation (Isro) has reported the successful completion of an uncontrolled re-entry into Earth’s atmosphere for the cryogenic upper stage of the LVM3 M4 launch vehicle. This component played a vital role in propelling the Chandrayaan-3 spacecraft into its designated orbit on July 14, 2023.

Chandrayaan-3 launching on LVM-3 from Shriharikota. (Photo: Isro)

The unplanned descent occurred at approximately 14:42 IST on Wednesday, marking a noteworthy event within 124 days post-launch. The rocket body, an integral part of Isro’s lunar exploration initiative, adhered to the “25-year rule” established by the Inter-Agency Space Debris Coordination Committee (IADC). This rule ensures the responsible disposal of space debris by requiring defunct satellite components to re-enter Earth’s atmosphere within 25 years.

Leading up to the re-entry, the upper stage underwent a meticulous process known as “passivation.” This method involves the elimination of residual propellants and potential energy sources, significantly reducing the risk of accidental explosions during the re-entry phase. Isro’s commitment to these measures aligns with the stringent space debris mitigation guidelines outlined by both the United Nations and IADC.

Isro’s successful execution of the passivation process and subsequent controlled disposal of the rocket body not only underscores its technical proficiency but also emphasizes its dedication to maintaining the long-term sustainability of outer space activities. By adhering to internationally recognized standards, Isro reinforces its role as a responsible participant in the global space community.

The Chandrayaan-3 mission, featuring a lander and rover configuration, stands as a testament to India’s advancements in safe lunar landing and exploration. The mission’s triumph, coupled with the conscientious disposal of the launch vehicle’s upper stage, represents a dual achievement for Isro. It not only showcases India’s growing expertise in space exploration but also underscores its commitment to environmental stewardship in the realm of space exploration.