Department of Space, Indian Space Research Organisation, Draft Spacecom Policy 2020- Public Consultation. It uses 3 earth sensors, 2 digital sun sensors, 8 coarse analog sun sensors, 3 solar panel sun sensors and one sensor processing electronics. [11], On 15 February 2020, altitude of INSAT-4B was lowered and it was relocated to new 85.5°E slot on 20 February 2020.   Feedback | Insat-4B ist baugleich mit dem Insat-4A. Im Juli 2010 fiel ein Solarzellenausleger von Insat-4B aus. 111.2° E (relocated on 18 Dec 2017), Built by the Indian Space Research Organisation, INSAT-4B is based upon the I-3K satellite bus. 12 Ku band high power transponders covering Indian main land using 140W radiatively cooled TWTAs. The launch occurred on 11 March 2007 at 22:03 UTC, from ELA-3 at Kourou.  Careers | INSAT-4B is an Indian communications satellite which forms part of the Indian National Satellite System. Juli 2010 berichtete die indische Weltraumorganisation ISRO, dass es ein Problem mit einem der beiden Solarzellenausleger des Kommunikationssatelliten INSAT 4B gibt.

INSAT–4B Spacecraft is the second in the INSAT 4 series of spacecrafts and is configured with exclusive communication payloads to provide services in Ku and C frequency bands.   Privacy Policy.   Contact us |   Help, PUBLIC NOTICE - ATTENTION : JOB ASPIRANTS, Copyright © 2020 ISRO, All Rights Reserved. INSAT 4B: Probleme mit Solarzellenausleger. [12][13], Last edited on 20 February 2020, at 22:06, "INSAT 4B Satellite details 2007-007A NORAD 30793", "Report number 22 by Comptroller Auditor General", "Historical satellite position data for INSAT-4B for the month of August 2019 Jens T. Satre www.satellite-calculations.com", "Historical satellite position data for INSAT-4B for the month of October 2019 Jens T. Satre www.satellite-calculations.com", "Historical satellite position data for INSAT-4B for the month of February 2020 Jens T. Satre www.satellite-calculations.com", "Who will get ISRO's new capacity- Sun, Dish or Tata Sky? The propulsion system is employing 16 thrusters, 4 each located on east, west and AY sides and 2 each on north and south sides. INSAT-4B was successfully inserted into geosynchronous transfer orbit, from which it raised itself into geostationary orbit using a liquid-fuelled apogee motor. Insat 4B Frequency Plan 5925 3700 Vertical Horizontal Horizontal Vertical 6425 4200 C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 5950,00 5990,00 6030,00 6070,00 6110,00 6150,00 6190,00 6230,00 6270,00 6310,00 6350,00 6390,00 36 C Beam Ku Beam Ku Beam C Beam C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 3725,00 3765,00 3805,00 3845,00 3885,00 3925,00 3965,00 4005,00 4045,00 4085,00 4125,00 … 12 C band high power transponders with extended coverage, covering southeast and northwest region apart from Indian main land using 63 W TWTAs.   Disclaimer |  Timeline | Terms of Use | After review the cause of malfunction was found out to be electric arcing in slip ring of one of the solar panels.  FAQ | Launched in 2007, it is operated in geostationary orbit at a longitude of 93.48° east. This is co-located with INSAT–3A at 93.5 o E longitude. Seitdem ist der Satellit nur noch eingeschränkt funktionsfähig. HSFC RECRUITMENT - AS THE COVID-19 PANDEMIC SITUATION STILL PREVAILS, THE FRESH DATES FOR CONDUCT OF WRITTEN EXAMINATION HAVE NOT BEEN FINALIZED. Two solar arrays power the satellite, while its communications payload consists of twelve C and twelve Ku band transponders.[4]. [9], On 20 August 2019,[10] altitude of INSAT-4B was raised and it was relocated to new 83°E slot on 12 October 2019. It had a mass at launch of 3,028 kilograms (6,676 lb), with a dry mass of 1,335 kilograms (2,943 lb) and was expected to operate for twelve years. [7][8], On 11 November 2017, INSAT-4B maneuvered to lower its altitude and drifted eastward to reach new slot at 111.2°E on 18 December 2017. @‡-õÔt=ÓæHŠè¸È´mG‹©_4›5ëaOÅv¨�úr>_,S"ŸÃş”�Oéš9ÅŒ;Rzü–c}B›¢k]. ", https://en.wikipedia.org/w/index.php?title=INSAT-4B&oldid=941823455, Creative Commons Attribution-ShareAlike License, This page was last edited on 20 February 2020, at 22:06. Ein Teil der Transponder des Satelliten musste wegen Strommangels abgeschaltet werden.
Mission Communication

[5] As of 11 November 2013, it is in an orbit with a perigee of 35,776 kilometres (22,230 mi), an apogee of 35,809 kilometres (22,251 mi), inclination of 0.07 degrees and an orbital period of 23.93 hours. März 2007 auf einen geostationären Orbit bei 93.5° Ost. The wheels and wheel drive electronics were imported with indigenous wheel interface module to interface the wheel drive electronics and AOCE. [1] The Skynet 5A military communications satellite for the British Ministry of Defence was launched aboard the same rocket. [4] It received the International Designator 2007-007A and Satellite Catalog Number 30793. Launched in 2007, it is operated in geostationary orbit at a longitude of 93.48° east. INSAT-4B is an Indian communications satellite which forms part of the Indian National Satellite System. [6] Similar partial power supply failure also affected Eutelsat W2M now known as Afghansat 1 and caused delay in launch of GSAT-8 due to required design changes in relevant power systems of satellite bus. Insat 3A/4B & G-Sat 15 | Insat 3A | Insat 4B | G-Sat 15 This satellite is below horizon in Redmond, United States The EIRP values are for Olympia, Washington, United States INSAT-4B; Mission type: Communications: Operator: INSAT: COSPAR ID: 2007-007A: SATCAT no. Eine Ariane 5-Trägerrakete und ein 440 Newton Apogäumsmotor brachten ihn am 11. There is one 440 N liquid apogee motor (using Mono Methyl Hydrazine (MMH) as fuel and oxides of Nitrogen (MON3 as oxidizer) and three pressurant tanks mounted on the LAM deck. [2], On 10 July 2010 INSAT-4B suffered a disruption in power supply from one of the two solar panels, rendering half of its transponder capacity useless. Am 9. [3], 83° E (relocated on 12 Oct 2019) Arianespace was contracted to launch INSAT-4B using an Ariane 5 ECA carrier rocket. ONCE FINALIZED, THE SAME WILL BE INTIMATED TO THE CANDIDATES THROUGH THEIR REGISTERED E-MAILS AND ISRO WEBSITE. Site Map |

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