#DirectionsMag:
"
One of India’s four navigation satellites has gone out of service, creating a fresh problem for the NavIC network. ISRO said the satellite IRNSS-1F was effectively lost for core use after its onboard atomic clock failed, a reminder that in satellite navigation, one component can matter as much as the whole spacecraft.
"

https://www.directionsmag.com/articles/irnss-1f-satellite-fails

1.5.2026

#GNSS #India #Indien #IRNSS #IRNSS1F #NavIC #Navigationssatellit #Raumfahrt #Satelliten #Satellitennavigation #SpaceFlight

#ISRO:
"
NVS-02 ..Observations and Apex Committee Recommendations
"
".. orbit raising operations .. could not be carried out."

".. drive signal not reaching the pyro valve of the oxidizer line of the engine meant for orbit raising .. most likely cause .. is the disengagement of atleast one contacts (in each of the main and redundant paths) of the connector."

https://www.isro.gov.in/NVS-02-Spacecraft-On-Orbit-Observations.html

25.2.2026

#GNSS #Indien #IRNSS #NavIC #NavSat #NVS02 #Navigationssatellit #Raumfahrt #Satelliten #SpaceFlight

#Indianexpres:
"
India’s navigation satellite system suffers major setback: 1 of 4 operational IRNSS satellites fails
"
"At least four indigenous navigation satellites must be fully operational for the NavIC system to provide navigation services .."

"IRNSS 1-F, launched on March 10, 2016, failed after its last functional atomic clock malfunctioned,"

https://indianexpress.com/article/india/navic-satellite-irnss-1f-failure-atomic-clock-malfunction-10581224/

14.3.2026

#GNSS #Indien #IRNSS #IRNSS1F #ISRO #NavIC #NavSat #Navigationssatellit #Raumfahrt #Satelliten #SpaceFlight

Demux'd Thoughts:
"
Analyzing effects of ISRO's NVS-02 Navigation Satellite failure on NavIC users

A round-up of the impacts of NVS-02 with some context
"
https://demuxdthoughts.substack.com/p/analyzing-effects-of-isros-nvs-02

7.2.2025

#India #Indien #IRNSS #ISRO #I2K #Navigationssatellit #NavIC #NVS02 #Raumfahrt #Satelliten #Satellitennavigation #SpaceFlight

#JAXA:
"
Launch Result of MICHIBIKI No. 6, Quasi-Zenith Satellite System (QZS-6) aboard the 5th H3 Launch Vehicle (H3 F5)
"
".. Launch Vehicle flew as planned, and approximately 29 minutes and 3 seconds after the liftoff, the separation of QZS-6 was confirmed. .."

https://global.jaxa.jp/press/2025/02/20250202-1_e.html

2.2.2025

#H3 #H3F5 #Japan #MICHIBIKI #Navigationssatellit #QZS #QZS6 #Rakete #Raumfahrt #Satelliten #Satellitennavigation #SpaceFlight

#ISRO #NVS02:

"..Subsequent to the launch, the solar panels .. deployed and power generation is nominal. Com. .. has been established. .. orbit raising.. could not be carried out as the valves for admitting the oxidizer to fire the thrusters ..did not open.

.. mission strategies for utilising the satellite for navigation in an elliptical orbit is being worked out. "

https://www.isro.gov.in/GSLV-F15_NVS-02_Mission.html

2.2.2025

#Indien #I2K #Navigationssatellit #Raumfahrt #Satelliten #Satellitennavigation #SpaceFlight

"
Airbus beginnt mit der Produktion von Galileo-Satelliten der zweiten Generation

Herstellung von sechs hochmodernen GNSS-Satelliten zur Erweiterung der aktuellen Galileo-Konstellation. Eine Pressemitteilung von Airbus Defence and Space.
"
https://www.raumfahrer.net/airbus-beginnt-mit-der-produktion-von-galileo-satelliten-der-zweiten-generation/

1.12.2023

#Airbus #ESA #EU #Friedrichshafen #G2 #Galileo #GNSS #Navigationssatellit #Raumfahrt #Satelliten #SpaceFlight