IRNSS-1A - PSLV-С22 (XL) - Шрихарикота FLP - 01.07.2013 22:11 ЛМВ

[che wi]

4-я ступень тоже на орбите?

[Salo]

http://www.isro.org/pslv-c22/mission.aspx

July 31, 2013                                                                   

[/li]
• All Navigation and Ranging Payload In Orbit Tests (IOT) are completed. All operations are normal.
  

                                                                                                                                     July 22, 2013                                                                  

[/li]
• Payload operations are in progress.
  

                                                                  July 17, 2013                                                               

[/li]
• IRNSS-1A is positioned in the designated equatorial cross over longitude of 55 deg E.
  
• All operations are normal.
  
• In Orbit Test is in progress.
  

                                                                                              July 08, 2013                                                                   

[/li]
• Orbit raising manoevers completed with fifth Apogee Motor Firing (AMF) on July 06, 2013 at 16:57 hrs (IST) and performance is normal.
  
• Satellite is in Geo-Synchronous Orbit (GSO) with 27 deg inclination at 44 deg E longitude.
  
• Present orbital parameters are : apogee 35870 km, perigee 35484 km and orbital period is 23h 50m.
  
• All the spacecraft subsystems are evaluated and functioning normally.
  

[che wi]

народ балдеет  

[che wi]

На аппарате вышли из строя рубидиевые часы (все 3 штуки), во втором полугодии планируют запустить спутник на замену.

In the NavIC, a constellation of seven satellites, one of the three crucial rubidium timekeepers on IRNSS-1A spacecraft failed six months ago. The other two followed subsequently.

A. S. Kiran Kumar, Chairman of the Indian Space Research Organisation, confirmed the glitch in the clocks but clarified that the satellite was otherwise all right, and the rest of the satellites were performing its core function of providing accurate position, navigation and time. However, without its clocks, the IRNSS-1A "will give a coarse value. It will not be used for computation. Messages from it will still be used."

ISRO, he said, was trying to revive the clocks on 1A and readying one of the two back-up navigation satellites to replace it in space in the second half of this year.

http://www.thehindu.com/news/national/Atomic-clocks-on-indigenous-navigation-satellite-develop-snag/article17114134.ece