Insat

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Insat-1B

Insat ( English Indian National Satellite System ) is an Indian , geostationary satellite system that both communication services offered as well as with additional meteorological observations and Search and Rescue tasks entrusted.

The satellite system with the associated 31 ground stations was officially put into service in 1980 and was supposed to fulfill several tasks from the start. It should deliver telephony channels and data connections, radio and television programs and weather data. In addition, there was the transmission of meteorological, oceanographic and hydrological data from automatic collection platforms to the ground station. In the beginning, only communications operations with leased Symphonie , Intelsat and Horizont satellites were taken up.

The first custom satellite in the series (the US-made Insat-1A ) was launched on April 10, 1982 from Cape Kennedy in the US with a Delta 3910 PAM rocket . The start of the highly elliptical transition run (185 × 36,000 km) was successful. Although there were difficulties opening the main command antenna, the satellite was ultimately successfully stationed on the longitude of New Delhi above the equator. It was able to transmit 4,300 telephone connections, 94 radio programs and two television programs (educational programs). At the same time, the box-shaped missile (1.42 m × 1.55 m × 2.18 m) with a mass of 450 kg had (for the time) high-resolution radiometers in the visible and infrared spectral range for meteorological tasks such as cyclone observation and forecasting. The satellite was controlled from the control station in Hassan ( state of Karnataka ). Since the satellite failed after about 150 days, Insat-1B was brought into orbit by the Space Shuttle Challenger on August 31, 1983 as a replacement .

INSAT satellites

No. satellite Start date Mission status
1 Insat-1A Apr 10, 1982 Deactivated September 6, 1982
2 Insat-1B Aug 30, 1983 switched off at the end of the planned period of use
3 Insat-1C July 22, 1988 canceled in November 1989
4th Insat-1D June 12, 1990 switched off at the end of the planned period of use
5 Insat-2A July 10, 1992 switched off at the end of the planned period of use
6th Insat-2B July 23, 1993 switched off at the end of the planned period of use
7th Insat-2C 0Dec 7, 1997 switched off at the end of the planned period of use
8th Insat-2D 0June 4th 1997 canceled on October 4, 1997
9 Insat-2DT (bought in Orbit, formerly Arabsat 1C) switched off at the end of the planned period of use
10 Insat-2E 0Apr 3, 1999 In operation
11 Insat-3A Apr 10, 2003 In operation
12 Insat-3B May 22, 2000 In operation
13 Insat-3C Jan. 24, 2002 In operation
14th Kalpana-1 Sep 12 2002 In operation (meteorology only)
15th GSAT-2 0May 8, 2003 In operation
16 Insat 3E 28 Sep 2003 Position control fuel exhausted is set to a graveyard orbit transferred
17th EDUSAT Sep 20 2004 In operation
18th Insat-4A Dec 22, 2005 In operation
19th Insat-4C July 10, 2006 failed to enter orbit due to a failure of the GSLV -F02 missile
20th Insat-4B March 12 2007 In operation
21st Insat-4CR Sep 20 2007 In operation
22nd INSAT-3D July 25, 2013 In operation
23 INSAT-3DR 08 Sep 2016 In operation

Web links

Commons : Insat  - collection of images, videos and audio files

swell

  1. Oxidator supply exhausted, INSAT 3E out of operation. raumfahrer.net, April 6, 2014, accessed on April 10, 2014 (German).
  2. Satellite: INSAT-3D. Observing Systems Capability Analysis and Review Tool, July 31, 2013, accessed August 8, 2013 .