Why is it in the News?

The Indian Space Research Organisation (ISRO) successfully conducted the Pushpak Reusable Landing Vehicle (RLV) LEX 02 landing experiment at the Aeronautical Test Range in Chitradurga recently.

What is a Reusable Landing Vehicle (RLV) LEX 02?

• Continuing our exploration into reusable landing vehicles, RLV-LEX-02 marks the second mission in our series conducted at the Aeronautical Test Range.
• Following the success of RLV-LEX-01 last year, this latest endeavor showcases the remarkable autonomous landing capability of our reusable launch vehicle (RLV).
• Notably, RLV-LEX-02 demonstrates the vehicle's ability to navigate and safely land from off-nominal initial conditions immediately upon release from a helicopter.

Methodology of the Experiment:

• The RLV LEX-02 mission showcased the autonomous landing prowess of our reusable launch vehicle under demanding circumstances following its release from a helicopter.
• Dubbed 'Pushpak', this winged vehicle was airlifted by an Indian Air Force Chinook helicopter and released from a height of 4.5 km.
• Navigating autonomously, it adeptly approached the runway, making precise cross-range corrections before executing a flawless landing.
• Utilizing a combination of its brake parachute, landing gear brakes, and nose wheel steering system, it safely came to a stop.
• Notably, the winged body and all flight systems previously employed in RLV-LEX-01 were repurposed for RLV-LEX-02 after undergoing necessary certification and clearances.
• This remarkable mission was executed collaboratively by the Vikram Sarabhai Space Centre (VSSC), the Liquid Propulsion System Centre (LPSC), and the ISRO Inertial Systems Unit (IISU).

What is the Reusable Launch Vehicle?

• The reusable launch vehicle represents a pioneering space plane design characterized by a low lift-to-drag ratio, which mandates high glide angles during approach and consequently requires landing at velocities reaching 350 kmph.
• Integral to its innovation are a multitude of indigenous systems developed meticulously. These encompass sophisticated navigation systems, leveraging pseudolite technology for precise localization, as well as instrumentation and sensor arrays, among other advancements, all spearheaded by ISRO.