UPSC Notes

Geosynchronous Satellite Launch Vehicle (GSLV)

PYQs

8

Articles

2

Momentum

23

Phase IFoundation

Background

Overview

GSLV represents India's indigenous capability in launching heavy satellites, particularly those for communication and Earth observation into high orbits, showcasing technological self-reliance. Its development and challenges are significant for UPSC.

The Geosynchronous Satellite Launch Vehicle (GSLV) is an expendable space launch vehicle developed by the Indian Space Research Organisation (ISRO) to launch satellites into geosynchronous transfer orbit (GTO). It is crucial for placing heavier communication and meteorological satellites into higher orbits.

Phase IIStatic core

Facts & tables

Key facts

Developer

Indian Space Research Organisation (ISRO).

Purpose

Launch satellites into Geosynchronous Transfer Orbit (GTO) and eventually Geosynchronous Orbit.

Payload Capacity

Capable of launching heavier satellites (e.g., 2367 kg for EOS-05).

Stages

Typically a three-stage vehicle, with a cryogenic upper stage.

Developer and Operator

Developed and operated by ISRO

Primary Function

Designed to launch satellites into Geosynchronous Transfer Orbit (GTO) and Geostationary Orbit

Key Technology

Utilizes a cryogenic upper stage for enhanced performance

Reference table

Static syllabus anchors

TypeReference
Conceptual areaSpace Science & Exploration

Reference table

Institutions & roles

BodyRole
Indian Space Research Organisation (ISRO)Develops and operates
ISRODevelops and operates
Phase IIIExam lens

Prelims angle

Overview

Prelims angle: Statement-based questions

Prelims angle: Factual recall

Quick revision

  • ISRO's launch vehicle for Geosynchronous Transfer Orbit.
  • Essential for launching heavier communication and observation satellites.
  • Features a cryogenic upper stage.
  • Performance has improved over time (e.g., increased payload capacity).
  • Key to India's self-reliance in space launches.

High-confidence PYQs

Topic timeline

Space Science & Exploration

ISRO successfully launches Earth observation satellite EOS-05

04 Sep 2026 · GSLV is ISRO's launch vehicle for placing heavier satellites into Geosynchronous orbit, crucial for India's space program, with continuous performance improvements and past challenges.

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GSLV places next-generation navigation satellite NVS-03 into orbit

31 Oct 2026 · GSLV is ISRO's launch vehicle designed for placing heavier satellites, especially communication and navigation satellites, into geosynchronous transfer orbit, showcasing India's cryogenic engine capabilities.

Read article

Related topics

Current topic

Geosynchronous Satellite Launch Vehicle (GSLV)

Often confused with

Earth Observation Satellites (EOS)

Open notes
Often confused with

NavIC (Navigation with Indian Constellation)

Coming soon

Practice writing on this topic

UPSC has asked 8 linked questions on Geosynchronous Satellite Launch Vehicle (GSLV) in Mains. Write an answer to one — and get it evaluated.

UPSC Prelims PYQs on Geosynchronous Satellite Launch Vehicle (GSLV)

Practice official previous year questions asked by UPSC related to this concept.

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