NVS-02

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NVS-02
GSLV-F15, NVS-02 -- Pre launch image of NVS-02 in cleanroom 02.webp
NVS series spacecraft
Mission type Navigation
Operator ISRO
COSPAR ID 2025-020A OOjs UI icon edit-ltr-progressive.svg
SATCAT no. 62850
Spacecraft properties
Bus I-2K
Manufacturer ISRO Satellite Centre
Space Applications Centre
Launch mass2250 kg
Power3 kW
Start of mission
Launch date29 January 2025, 06:23 IST
Rocket GSLV-F15
Launch site Satish Dhawan, SLP
Contractor ISRO
Orbital parameters
Reference system Geocentric
Regime GTO
Longitude111.75° East (planned)
Perigee altitude 165 km (103 mi)
Apogee altitude 36,577 km (22,728 mi)
←  NVS-01
NVS-03  →

NVS-02 is the second satellite in the NVS series, equipped with navigation payloads in L1, L5, and S bands, as well as a ranging payload in C-band. The vehicle is based on the conventional I-2K bus platform, with a lift-off mass of 2250 kg and a power handling capacity of approximately 3 kW. It was planned to replace IRNSS-1E at the orbital slot of 111.75° East. [1] [2] [3]

Contents

Description

NVS-02, the second satellite in the NVS series is configured with Navigation payload in L1, L5 and S bands in addition to ranging payload in C-band like its predecessor-NVS-01.It was planned to provide two types of services, namely, Standard Positioning Service (SPS) and Restricted Service (RS). SPS provides a position accuracy of better than 20 m (2σ) and timing accuracy better than 40 ns (2σ) over the primary service Area. [4]

NVS-02 satellite was designed, developed and integrated at U R Rao Satellite Centre (URSC) with the support of other satellite-based work Centres. On completion of Assembly and Integrated Testing (AIT), the satellite was subjected to satellite level thermovac test to verify and validate its design and performance in simulated space environment during November-December 2024. The satellite underwent dynamic test during December 2024 thus confirming its suitability to withstand the dynamic loads anticipated during launch. [4]

A comprehensive Pre-shipment Review (PSR) of the performance and compliance of the Satellite during various phases of its realization was completed on December 27, 2024. The satellite was flagged off to SDSC-SHAR on January 05, 2025. [4]

History

Launch

NVS-02 was launched aboard GSLV-F15.The rocket lifted off from the spaceport’s second launch pad at 6.23 a.m. on 29th January 2025, marking ISRO's first launch of the year and the 17th flight of the GSLV and the 11th flight of Mk2 Variant. The satellite was injected into the GTO 19 minutes after launch from Sriharikota.This marked ISRO's 100th Spaceflight launch from Satish Dhawan Space Center. [5] [6] [7]

It was the First mission undertaken by newly appointed ISRO chairman V. Narayanan. [8]

Fuel system failure

Following launch, ISRO reported that orbit raising operations towards positioning the satellite to the designated orbital slot could not be carried out as the valves for admitting the oxidizer fuel for the main engine did not open. From this point, the spacecraft will not be able to complete its mission objectives. The spacecraft is currently still in a Geostationary transfer orbit with a perigree of about 165 km and an apogee of around 36,577 km. All other Systems are reported to be working normally. [9] [10]

ISRO has formed a Failure Analysis committee headed by former Chairman A S Kiran Kumar to look into the causes for the failure of the pyro valve in the spacecraft. [11]

Notes and references

  1. ↑ C.S, Hemanth (29 January 2025). "ISRO successfully launches NVS-02 satellite; creates history with the 100th launch from Sriharikota". The Hindu . Retrieved 29 January 2025.
  2. ↑ "Hitting a century, ISRO launches 100th satellite NVS-02 from Sriharikota". Deccan Herald . Retrieved 29 January 2025.
  3. ↑ Roushan, Anurag (29 January 2025). "ISRO's 100th mission – How will NVS-02 satellite boost India's GPS alternative? Explained". indiatvnews.com. Retrieved 29 January 2025.
  4. 1 2 3 "NVS-02: Advancing India's Regional Navigation Capabilities". www.isro.gov.in. Retrieved 4 February 2025.
  5. ↑ "GSLV-F15 lifts off with NVS-02 satellite in Isro's 100th launch from Sriharikota". India Today. 29 January 2025. Retrieved 1 February 2025.
  6. ↑ C.S, Hemanth (29 January 2025). "ISRO successfully launches NVS-02 satellite; creates history with the 100th launch from Sriharikota". The Hindu. ISSN   0971-751X . Retrieved 1 February 2025.
  7. ↑ "Isro's GSLV-F15 rocket carrying navigation satellite NVS-02 lifts off from Sriharikota". The Times of India. 29 January 2025. ISSN   0971-8257 . Retrieved 1 February 2025.
  8. ↑ "ISRO Hits 100th Rocket Launch Milestone With Navigation Sat Mission". www.ndtv.com. Retrieved 1 February 2025.
  9. ↑ "ISRO's Latest Mission Hits A Hurdle, Satellite Faces Technical Glitch". ndtv.com. Retrieved 2 February 2025.
  10. ↑ "ISRO's orbit raising operations for NVS-02 satellite disrupted by valve malfunction". The Hindu . 2 February 2025. ISSN   0971-751X . Retrieved 2 February 2025.
  11. ↑ Jagannathan, Venkatachari. "Former ISRO Chairman To Probe Failure". Rediff. Retrieved 9 February 2025.

See also

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