ISRO’s SpaDeX Satellites Move Closer for Docking

Why in the news?

ISRO’s SpaDeX satellites are preparing for a critical docking experiment. Currently 1.5 km apart, they are set to reduce their distance to 500 meters after overcoming earlier drift challenges, marking a milestone in space technology.

ISRO's SpaDeX Satellites Move Closer for Docking

Progress of SpaDeX Satellites:

  • ISRO announced that the two SpaDeX satellites, part of a docking experiment, are currently positioned 1.5 km apart.
  • The spacecrafts are in a hold mode to ensure precise control before reducing the distance further.
  • The next planned step is to decrease the distance between the satellites to 500 meters by Saturday morning.

Updates on Docking Experiment

  • The docking experiment has faced two postponements due to an unexpected drift between the satellites.
  • ISRO confirmed that the drift has been successfully arrested.
  • After stabilizing the satellites, they were placed in a slow drift trajectory to gradually move closer.

ISRO’s Achievements and Ongoing Efforts

  • This docking experiment is a significant milestone in India’s space research, showcasing advanced spacecraft navigation and control capabilities.
  • ISRO’s updates reflect the careful planning and execution required for such precision maneuvers in space.
  • The progress of SpaDeX demonstrates India’s growing expertise in satellite docking and related technologies.

About SpaDeX:

  • Full Form: Space Docking Experiment, a technology demonstrator by ISRO.
  • Objective: Demonstrate autonomous docking of two spacecraft (SDX01 – Chaser and SDX02 – Target) in low Earth orbit using advanced sensors and propulsion systems.
  • Mission Design: Satellites deployed into 470 km orbit by PSLV; dock at distances from 20 km to 3 meters using Bharatiya Docking System (BDS).
  • Significance: Tests power transfer, spacecraft control, and supports satellite servicing, crew transfers, and future space station development.
  • Challenge: Docking requires reducing relative velocity from 28,800 km/h to 0.036 km/h.

Sources Referred:

PIB, The Hindu, Indian Express, Hindustan Times