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Types of Launch Vehicles Video Lecture | Science & Technology for UPSC CSE

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FAQs on Types of Launch Vehicles Video Lecture - Science & Technology for UPSC CSE

1. What are the different types of launch vehicles?
Ans. The different types of launch vehicles include expendable launch vehicles (ELVs), reusable launch vehicles (RLVs), satellite launch vehicles (SLVs), and human-rated launch vehicles (HRLVs). ELVs are designed for one-time use and are discarded after launching their payload into space. RLVs, on the other hand, can return to Earth and be reused for multiple missions. SLVs are specifically designed for launching satellites into orbit, while HRLVs are capable of carrying human astronauts.
2. How do expendable launch vehicles work?
Ans. Expendable launch vehicles (ELVs) work by utilizing multiple stages to reach space. The first stage contains powerful engines that provide the initial thrust needed to lift the vehicle off the ground. Once the first stage runs out of fuel, it is jettisoned, and the next stage ignites its engines to continue the ascent. This process continues until the final stage, which carries the payload, reaches the desired orbit or trajectory. After delivering the payload, the entire vehicle is discarded.
3. What are the advantages of reusable launch vehicles?
Ans. Reusable launch vehicles (RLVs) offer several advantages over expendable ones. Firstly, they significantly reduce the cost of space missions as the major components of the vehicle can be reused multiple times, reducing manufacturing expenses. Secondly, RLVs contribute to sustainability in space by minimizing space debris since discarded stages are not left in orbit. Lastly, RLVs enable faster turnaround times between missions, allowing for more frequent and efficient launches.
4. How are satellite launch vehicles different from other launch vehicles?
Ans. Satellite launch vehicles (SLVs) are specifically designed for the purpose of launching satellites into space. Unlike other launch vehicles that may have various mission objectives, SLVs are optimized to deliver satellites into their intended orbits. They are equipped with specific payload adapters and fairings to protect the satellites during launch and ensure their proper deployment in space. SLVs are designed to meet the unique requirements of satellite launches, such as precise injection into specific orbits and the ability to carry multiple satellites simultaneously.
5. What is the significance of human-rated launch vehicles?
Ans. Human-rated launch vehicles (HRLVs) play a crucial role in enabling human space exploration and missions. These vehicles are designed and tested to ensure the safety and well-being of astronauts during launch and space travel. They undergo rigorous evaluations and meet stringent criteria to ensure reliability and minimize risks to human life. HRLVs allow for the transportation of astronauts to and from space stations, such as the International Space Station (ISS), and are essential for crewed missions to explore the Moon, Mars, and beyond.
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