Question

What is the full form of SLV?

Answer 1

Hint: The Satellite Launch Vehicle (SLV) was developed in early 1970s in order to improve the satellite launch technologies by the Indian Space Research Organisation as a small lift launch vehicle project. The First SLV can carry up to a load of 40kg and it can go up to 400km. All the SLVs are launched from Sriharikota.

Complete answer:
Whenever the topic of missiles and launch vehicles comes then the first person comes to our mind is missile man of India Dr. A.P.J. Abdul Kalam. He joined the Indian Space Research Organisation in 1969 (previously he worked in Defence Research and Development Organisation). He was head of India's first SLV project and he developed the launch vehicle project in the next 20 years.
The first Satellite Launch Vehicle i.e., E1 SLV was launched on 10th August 1979 which carried Rohini Technology Payload (has a mass of 35kg). But after 317 seconds after launch the E1 SLV crashed into Bay of Bengal because of the faulty valve and the outcome of the first Satellite Launch Vehicle was a failure.
The second Satellite Launch Vehicle i.e., E2 SLV was launched on 18th July 1980 which carried Rohini RS-1 Payload (has a mass of 35kg). This project was successful. It was the first satellite to be launched by the Satellite Launch Vehicle and the fourth stage of the Satellite Launch Vehicle’s data was provided by this satellite.
The third Satellite Launch Vehicle i.e., D1 SLV was launched on 31st May 1981 which carried Rohini RS-D1 (has a mass of 38kg). This project was partially failed because the orbit was too low and it got decayed after 9 days of the launch.
The fourth Satellite Launch Vehicle i.e., D2 SLV was launched on 17th April 1983 which carried Rohini RS-D2 (has a mass of 41.5kg). This project is also a successful project which is used for the earth observation purpose.
Hence, we can conclude that SLV stands for satellite launch vehicle.

Note:
All the four Satellite Launch Vehicles were launched from the SLV launch pad which is in Sriharikota High Altitude Range. Whereas the first two SLV was for experimental (E) and the next two SLV was for developmental as these were beginning processes for India and not for a long service life.