Directions: Read the passage carefully and answer the questions that follow.
The Indian Space Research Organisation (Isro) early Friday achieved a significant milestone in the development of reusable launch vehicle (RLV) technology with the successful completion of the second landing experiment, the RLV-LEX-02.
Conducted at 7.10 am at the Aeronautical Test Range (ATR) in Chitradurga's Challakere, some 200km from Bengaluru, the second experiment in the series demonstrated the autonomous landing capability of the RLV from "off-nominal initial conditions".
"Building upon the success of the RLV-LEX-01 mission last year, the RLV-LEX-02 experiment involved more challenging maneuvers and dispersions, requiring the vehicle to correct both cross-range and downrange deviations before landing autonomously on the runway," Isro said.
The winged vehicle, now being called Pushpak, was lifted by an Indian Air Force Chinook helicopter and released from an altitude of 4.5 km, 4 km away from the runway.
After release, Pushpak autonomously approached the runway, making necessary cross-range corrections. It then landed precisely on the runway, coming to a halt with the aid of its brake parachute, landing gear brakes, and nose wheel steering system.
"This mission successfully simulated the approach and high-speed landing conditions of an RLV returning from space. With the RLV-LEX-02, Isro has re-validated its indigenously developed technologies in areas such as navigation, control systems, landing gear, and deceleration systems, which are essential for performing a high-speed autonomous landing of a space-returning vehicle," Isro said.
Significantly, the winged body and all flight systems used in the RLV-LEX-01 mission were reused in the RLV-LEX-02 mission after necessary certifications and clearances, demonstrating the reuse capability of flight hardware and systems.
The mission was accomplished by the Vikram Sarabhai Space Centre (VSSC), the Liquid Propulsion System Centre (LPSC), and the ISRO Inertial Systems Unit (IISU), with collaboration from various agencies, including the Indian Air Force, ADE, ADRDE, and CEMILAC.
Isro chairman S Somanath congratulated the team for the flawless execution while VSSC director S Unnikrishnan Nair, highlighted that through this repeated success, Isro could master the terminal phase maneuvering, landing, and energy management in a fully autonomous mode, which is a critical step towards the future development of an RLV.
[Excerpt from Times of India “ISRO Set for Final RLV Landing Experiment in June” Dated 10/06/24]
Q1: What is the purpose of ISRO's Reusable Launch Vehicle (RLV) technology?
(a) To explore the surface of Mars
(b) To conduct experiments in low Earth orbit
(c) To create spacecraft that can be launched, recovered, and reused
(d) To study the behavior of comets
Ans: (c) To create spacecraft that can be launched, recovered, and reused
Sol: The purpose of ISRO's RLV technology is to develop spacecraft that can be launched, recovered, and used again, aiming to make space trips much cheaper.
Q2: Where is the third and final RLV Landing Experiment (RLV LEX) set to take place?
(a) Sriharikota, Andhra Pradesh
(b) Thiruvananthapuram, Kerala
(c) Chitradurga, Karnataka
(d) Bengaluru, Karnataka
Ans: (c) Chitradurga, Karnataka
Sol: The third and final RLV Landing Experiment (RLV LEX) is scheduled to take place at the Aeronautical Test Range in Chitradurga, Karnataka.
Q3: What is the name of the unmanned prototype with wings used in the RLV LEX flights?
(a) Pegasus
(b) Dragon
(c) Pushpak
(d) Phoenix
Ans: (c) Pushpak
Sol: The unmanned prototype with wings used in the RLV LEX flights is called "Pushpak."
Q4: How will Pushpak be taken to the required height and lateral distance for the RLV LEX-03 mission?
(a) By an unmanned drone
(b) By a rocket booster
(c) By an IAF Chinook helicopter
(d) By a hot air balloon
Ans: (c) By an IAF Chinook helicopter
Sol: Pushpak will be taken to the required height and lateral distance for the RLV LEX-03 mission by an IAF Chinook helicopter.
Q5: What is the next step after the RLV LEX series is finished?
(a) Launching a crewed mission to the Moon
(b) Conducting experiments in low Earth orbit
(c) Sending an Orbital Re-entry Vehicle (ORV) into orbit
(d) Developing a new generation of rockets
Ans: (c) Sending an Orbital Re-entry Vehicle (ORV) into orbit
Sol: The next step after the RLV LEX series is finished is launching an Orbital Re-entry Vehicle (ORV) into orbit.
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