See also
Video observation of post lift-off demonstrates stage failure. Clearly observed longitudinal axis structural offset at boost, expanded boost axis to thrust vector beyond control limit.
- see about 32 sec.
| Mission type | Communication |
|---|---|
| Operator | ISRO |
| Mission duration | 12-14 years (planned) Failed to orbit |
| Spacecraft properties | |
| Bus | I-2K |
| Manufacturer | ISRO |
| Launch mass | 2,310 kilograms (5,090 lb) |
| Start of mission | |
| Launch date | 25 December 2010, 10:34 UTC |
| Rocket | GSLV Mk.I F06 |
| Launch site | Satish Dhawan SLP |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Geostationary |
| Longitude | 55° East |
| Epoch | Planned |
| Transponders | |
| Band | 36 G/H band (IEEE C band) |
GSAT-5P, or GSAT-5 Prime, was an Indian communications satellite which was lost in a launch failure in December 2010. Part of the Indian National Satellite System, it was intended to operate in geosynchronous orbit as a replacement for INSAT-3E.
GSAT-5P was a 2,310-kilogram (5,090 lb) spacecraft, which was built by the Indian Space Research Organisation based on the I-2K satellite bus. [1] ISRO also launched the satellite, and was to have been responsible for its operation. It was equipped with 36 transponders operating in the G/H band of the NATO-defined spectrum, or the C band of the older IEEE spectrum. Twelve of the transponders operated on extended frequencies within the band. [2] GSAT-5P was expected to operate for at least 12 years, and would have been placed at a longitude of 55 degrees east. [3]
The launch of GSAT-5P used a Geosynchronous Satellite Launch Vehicle Mk.I, [1] serial number F06, and took place from the Second Launch Pad at the Satish Dhawan Space Centre. The rocket featured several modifications from previous flights, including an enlarged upper stage with more fuel to accommodate a heavier payload, and an enlarged composite payload fairing with a diameter of 4 metres (13 ft) in place of the regular 3.4 metres (11 ft) aluminium fairing. [3]
The launch was originally scheduled for 20 December 2010, but was delayed to allow a leaking valve on the upper stage to be repaired. [4] Following the repair of the leak, the launch was rescheduled for 25 December 2010. [5] The countdown began 06:34 UTC on 24 December 2010. [6] and launch occurred at 10:34 UTC on 25 December. [7]
Forty five seconds after launch the four liquid fuelled boosters attached to the first stage ceased responding to commands, resulting in a loss of control. Sixty three seconds into the flight, the Range Safety Officer activated a self-destruct mechanism aboard the rocket, causing it to explode. [8] [9] Debris from the launch fell into the Bay of Bengal. [10] It was the second consecutive launch failure involving a Geosynchronous Satellite Launch Vehicle, following the loss of GSAT-4 in April 2010. [11]
Video observation of post lift-off demonstrates stage failure. Clearly observed longitudinal axis structural offset at boost, expanded boost axis to thrust vector beyond control limit.
The Indian National Satellite System or INSAT, is a series of multipurpose geostationary satellites launched by ISRO to satisfy the telecommunications, broadcasting, meteorology, and search and rescue operations. Commissioned in 1983, INSAT is the largest domestic communication system in the Indo-Pacific Region. It is a joint venture of the Department of Space, Department of Telecommunications, India Meteorological Department, All India Radio and Doordarshan. The overall coordination and management of INSAT system rests with the Secretary-level INSAT Coordination Committee.
Geosynchronous Satellite Launch Vehicle (GSLV) is an expendable launch system operated by the Indian Space Research Organisation (ISRO). GSLV was used in fourteen launches from 2001 to 2021. Even though GSLV Mark III shares the name, it is an entirely different launch vehicle.
GSAT-3, also known as EDUSAT, was a communications satellite which was launched on 20 September 2004 by the Indian Space Research Organisation. EDUSAT is the first Indian satellite built exclusively to serve the educational sector. It is mainly intended to meet the demand for an interactive satellite-based distance education system for the country.
The GSAT satellites are India's indigenously developed communications satellites, used for digital audio, data and video broadcasting. As of 5 December 2018, 20 GSAT satellites of ISRO have been launched out of which 14 satellites are in service.
The Launch Vehicle Mark-3, previously referred to as the Geosynchronous Satellite Launch Vehicle Mark III, is a three-stage medium-lift launch vehicle developed by the Indian Space Research Organisation (ISRO). Primarily designed to launch communication satellites into geostationary orbit, it is also due to launch crewed missions under the Indian Human Spaceflight Programme. GSLV Mk III has a higher payload capacity than it's predecessor, GSLV Mk II.
INSAT-4C was an Indian communications satellite which was lost in a launch failure in 2006. Had it reached orbit, it would have formed part of the Indian National Satellite System. Launched in 2007, it was intended to have operated in geostationary orbit at a longitude of 73.97° east. The INSAT-4CR satellite, launched in September 2007, replaced it.
GSAT-4, also known as HealthSat, was an experimental communication and navigation satellite launched in April 2010 by the Indian Space Research Organisation on the maiden flight of the Geosynchronous Satellite Launch Vehicle Mk.II rocket. It failed to reach orbit after the rocket's third stage malfunctioned. The third stage was the first Indian-built cryogenic-fuelled upper stage, and was making its first flight. The ISRO suspects that the failure was caused by the third stage not igniting.
The CE-7.5 is a cryogenic rocket engine developed by the Indian Space Research Organisation to power the upper stage of its GSLV Mk-2 launch vehicle. The engine was developed as a part of the Cryogenic Upper Stage Project (CUSP). It replaced the KVD-1 (RD-56) Russian cryogenic engine that powered the upper stage of GSLV Mk-1.
GSAT-14 is an Indian communications satellite launched in January 2014. It replaced the GSAT-3 satellite, which was launched in 2004. GSAT-14 was launched by a Geosynchronous Satellite Launch Vehicle Mk.II, which incorporated an Indian-built cryogenic engine on the third stage.
GSAT-10 is an Indian communication satellite which was launched by Ariane-5ECA carrier rocket in September 2012. It has 12 KU Band, 12 C Band and 6 lower extended c band transponders, and included a navigation payload to augment GAGAN capacity. Following its launch and on-orbit testing, it was placed in Geosynchronous orbit at 83.0° East, from where it will provide communication services in India.
INSAT-4E, also known as GSAT-6, is a member of the INSAT family and is a multimedia communication satellite that will offer a Satellite Digital Multimedia Broadcasting (S-DMB) service across several digital multimedia terminals or consoles which can be used to provide information services to vehicles on the fly and to the mobile phones. The satellite can be used for other social and strategic applications.
GSAT-7 or INSAT-4F is a multi-band military communications satellite developed by the Indian Space Research Organisation. The Indian Navy is the user of the multi-band communication spacecraft, which has been operational since September 2013. According to defense experts, the satellite will enable the navy to extend its blue water capabilities and stop relying on foreign satellites like Inmarsat, which provide communication services to its ships.
GSAT-7A is an advanced military communications satellite meant primarily for the Indian Air Force with Indian Army using 30% of capacity.
GSAT-19 is an Indian communications satellite launched by the Indian Space Research Organisation aboard a GSLV Mark III on 5 June 2017.
GSAT-17 is an Indian communications satellite. Built by ISRO and operated by INSAT, it carries 24 C-band, 2 lower C-band, 12 upper C-band, 2 CxS, and 1 SxC transponders. It additionally carries a dedicated transponder for data relay (DRT) and search-and-rescue (SAR) services. At the time of launch, GSAT-17 was the heaviest satellite built by ISRO.
GSAT-18 is an Indian communications satellite. Built by ISRO and operated by INSAT, it carries 24 C-band, 12 extended C-band, and 12 Ku-band transponders.
GSAT-6A was a communication satellite launched by the Indian Space Research Organisation (ISRO) It featured a 6-metre (20 ft) unfurlable S-band antenna similar to the one used on GSAT-6. Around 17 minutes after lift-off, the three stage GSLV Mk.II rocket flying on GSLV F08 mission successfully injected the satellite into a geosynchronous transfer orbit. Due to power failure during its orbit raising burns the communication was lost with GSAT-6A before it could reach its final circular geostationary orbit (GSO).
GSAT-29 is a high-throughput communication satellite developed by the Indian Space Research Organisation (ISRO). The mission aims at providing high-speed bandwidth to Village Resource Centres (VRC) in rural areas. The two Ku and Ka operational payloads will provide communication services to Jammu and Kashmir and Northeast India under Digital India programme. At the time of launch GSAT-29 was the heaviest satellite, weighing 3,423 kg (7,546 lb), that was placed in orbit by an Indian launch vehicle. Approved cost of GSAT-29 is ₹175.63 crore (US$22 million).
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