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VOL. I · EST. 11.2025 
SatyaDheesh
सत्याधीश
India's Ground Truth Record
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ISRO begins 24-hour countdown for GSLV-F18 to launch 2,232 kg NVS-03 satellite

GS3Economy · S&T · Environment · Security· Space technology (ISRO, missions)· Prelims·

Space technology and navigation systems: a key GS3 topic on indigenous technology and strategic autonomy.

Why in news

ISRO initiated a 24-hour countdown for the GSLV-F18 rocket to launch the NVS-03 satellite to strengthen the NavIC system.

Background

The GSLV-F18 is a 420-tonne, three-stage rocket designed to deploy a 2,232 kg NVS-03 satellite into a Geosynchronous Transfer Orbit (GTO). The mission utilizes an unprecedented engineering configuration using open pyrotechnic valves to prevent connector failures experienced in the previous NVS-02 mission.

Facts for Prelims

  • S&TGSLV-F18: A three-stage rocket with a lift-off mass of 420 tonnes.
  • FactNVS-03 satellite weight: 2,232 kg.
  • FactTarget Orbit: Geosynchronous Transfer Orbit (GTO) with an apogee of 37,023 km and perigee of 170 km at 20.75 degrees inclination.
  • S&TNavIC: Navigation with Indian Constellation system which NVS-03 supports.
  • PlaceSDSC-SHAR: Satish Dhawan Space Centre, the launch site for the mission.

Prelims practice question

With reference to the NVS-03 satellite mission, consider the following statements:

  1. The GSLV-F18 is a two-stage rocket designed for low earth orbit deployment.
  2. The mission utilizes open pyrotechnic valves to prevent connector failures.
  3. The NVS-03 satellite is being launched to strengthen the NavIC system.

Which of the statements given above is/are correct?

  1. (a)1 only
  2. (b)2 only
  3. (c)2 and 3 only
  4. (d)1, 2 and 3
Show answer

Answer: (c) 2 and 3 only — Statements 2 and 3 are correct. Statement 1 is incorrect: The GSLV-F18 is a three-stage rocket designed for Geosynchronous Transfer Orbit.

For Mains

Q. Discuss the significance of India's indigenous navigation systems like NavIC in ensuring regional sovereignty and technological self-reliance.

Dimensions to cover in your answer

  • Strategic Autonomy: Reducing dependence on foreign GPS/GLONASS for critical infrastructure and defense.
  • Technological Integration: Compatibility of L1 band signals with civilian smartphone chipsets and wearable devices.
  • Engineering Resilience: Addressing hardware failures through redundant systems and innovative pyrotechnic valve configurations.

Keywords: NavIC · Geosynchronous Transfer Orbit · Space Applications Centre · Strategic Autonomy · Indigenous Technology

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