Insat
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 | Dec 7, 1997 | switched off at the end of the planned period of use |
| 8th | Insat-2D | June 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 | Apr 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 | May 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 | 8 Sep 2016 | In operation |
Web links
swell
- ↑ Oxidator supply exhausted, INSAT 3E out of operation. raumfahrer.net, April 6, 2014, accessed on April 10, 2014 (German).
- ↑ Satellite: INSAT-3D. Observing Systems Capability Analysis and Review Tool, July 31, 2013, accessed August 8, 2013 .