ISRO’S Reusable Launch Vehicle

  • 03 Apr 2023

On April 1, 2023 the Indian Space Research Organisation (ISRO) achieved a major milestone by successfully landing a Reusable Launch Vehicle (RLV) in an autonomous mission at the Aeronautical Test Range of the Defence Research and Development Organisation (DRDO) in Karnataka’s Chitradurga district.

About the Experiment: The experiment, named the Reusable Launch Vehicle Autonomous Landing Mission (RLV LEX), was conducted under the exact conditions of a space re-entry vehicle’s landing and utilised several indigenous systems developed by ISRO, including localized navigation systems based on pseudolite systems and instrumentation and sensor systems.

  • The RLV LEX mission achieved the final approach phase that coincided with the re-entry flight path exhibiting an autonomous, high-speed (350 kmph) landing, making it a significant milestone for the Indian space agency.
  • The LEX made use of contemporary technologies developed for RLV, making other operational launch vehicles of ISRO more cost-effective.

Signifance: The successful experiment marks a significant step forward in India's goal to send reusable rockets into space and reduce the cost of the process by 80%.

  • The RLV is expected to enable India to have its own reusable rockets and landing craft for specific mission goals.
  • Chairman of ISRO, praised the achievement and stated that the success of the experiment has edged India closer to developing an Orbital Landing Experiment.
  • He further added that more experiments are in the pipeline to ensure that the RLV succeeds in payload delivery to low earth orbit.

Previous experiment: ISRO first demonstrated the re-entry of its winged vehicle RLV-TD in its HEX Mission in May 2016.

The term "pseudolite" is a combination of the words "pseudo" and "satellite." While satellites are used in the GPS system, pseudolites are not in orbit and are not technically satellites. This system refers to a set of ground-based transmitters that mimic the GPS (Global Positioning System) signals in a local area to aid in navigation. These transmitters can be used when GPS signals are unavailable or blocked, such as in indoor or urban environments, where the GPS signals can be obstructed by buildings and other structures.