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Rohini (satellite)
Rohini is a series of satellites launched by the Indian Space Research organization (ISRO). The Rohini series consisted of four satellites, each of which was launched by the Satellite Launch Vehicle ( SLV) and three of which made it successfully to orbit. The series were mostly experimental satellites. Satellites in series Rohini Technology Payload (RTP) It was a experimental spin stabilized satellite that used 3 W of power and was launched on 10 August 1979 from SDSC. The satellite contained instruments to monitor the launch vehicle. It did not achieve its intended orbit as the carrier rocket SLV was only 'partially successful'. RS-1 It was also a experimental spin stabilized satellite that used 16 W of power and was successfully launched on 18 July 1980 from Satish Dhawan Space Centre into an orbit of with an inclination of 44.7°. It was the first satellite successfully launched by the indigenous launch vehicle SLV. It provided data on the fourth stage of SLV. The satell ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ISRO
The Indian Space Research Organisation (ISRO; ) is the national space agency of India, headquartered in Bengaluru. It operates under the Department of Space (DOS) which is directly overseen by the Prime Minister of India, while the Chairman of ISRO acts as the executive of DOS as well. ISRO is India's primary agency for performing tasks related to space-based applications, space exploration and the development of related technologies. It is one of six government space agencies in the world which possess full launch capabilities, deploy cryogenic engines, launch extraterrestrial missions and operate large fleets of artificial satellites. The Indian National Committee for Space Research (INCOSPAR) was established by Jawaharlal Nehru under the Department of Atomic Energy (DAE) in 1962, on the urging of scientist Vikram Sarabhai, recognising the need in space research. INCOSPAR grew and became ISRO in 1969, within DAE. In 1972, the government of India set up a Space Commissi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Low Earth Orbit
A low Earth orbit (LEO) is an orbit around Earth with a period of 128 minutes or less (making at least 11.25 orbits per day) and an eccentricity less than 0.25. Most of the artificial objects in outer space are in LEO, with an altitude never more than about one-third of the radius of Earth. The term ''LEO region'' is also used for the area of space below an altitude of (about one-third of Earth's radius). Objects in orbits that pass through this zone, even if they have an apogee further out or are sub-orbital, are carefully tracked since they present a collision risk to the many LEO satellites. All crewed space stations to date have been within LEO. From 1968 to 1972, the Apollo program's lunar missions sent humans beyond LEO. Since the end of the Apollo program, no human spaceflights have been beyond LEO. Defining characteristics A wide variety of sources define LEO in terms of altitude. The altitude of an object in an elliptic orbit can vary significantly along the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rohini Technology Payload
Rohini may refer to: People * Rohini (actress) (born 1969), Indian actress, screenwriter, and director * Rohini (Buddha's disciple), female disciple * Rohini (goddess), consort of Chandra * Rohini (Krishna's wife), queen of Hindu god Krishna * Rohini Devi, first consort of Vasudeva in Hindu mythology * Rohini Hattangadi (born 1955), Indian actress Places * Rohini, West Bengal, a village in India * Rohini, Delhi, a residential sub city in Northwest Delhi, India Other * ''Rohini'' (film), a 1953 Indian Tamil-language film directed by Kamal Ghosh * Rohini (nakshatra), a lunar mansion in Indian astronomy corresponding to Aldebaran * Rohini (satellite) Rohini is a series of satellites launched by the Indian Space Research organization (ISRO). The Rohini series consisted of four satellites, each of which was launched by the Satellite Launch Vehicle ( SLV) and three of which made it successfully ..., a series of Indian space satellites * Rohini sounding rocket series, Indian rock ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rohini RS-D2
Rohini may refer to: People * Rohini (actress) (born 1969), Indian actress, screenwriter, and director * Rohini (Buddha's disciple), female disciple * Rohini (goddess), consort of Chandra * Rohini (Krishna's wife), queen of Hindu god Krishna * Rohini Devi, first consort of Vasudeva in Hindu mythology * Rohini Hattangadi (born 1955), Indian actress Places * Rohini, West Bengal, a village in India * Rohini, Delhi, a residential sub city in Northwest Delhi, India Other * ''Rohini'' (film), a 1953 Indian Tamil-language film directed by Kamal Ghosh * Rohini (nakshatra), a lunar mansion in Indian astronomy corresponding to Aldebaran * Rohini (satellite) Rohini is a series of satellites launched by the Indian Space Research organization (ISRO). The Rohini series consisted of four satellites, each of which was launched by the Satellite Launch Vehicle ( SLV) and three of which made it successfully ..., a series of Indian space satellites * Rohini sounding rocket series, Indian rock ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Satellite Launch Vehicle
The Satellite Launch Vehicle or SLV was a small-lift launch vehicle project started in the early 1970s by the Indian Space Research Organisation to develop the technology needed to launch satellites. SLV was intended to reach a height of and carry a payload of . The first experimental flight of SLV-3, in August 1979, was a failure. The first successful launch took place on 18 July 1980. It was a four-stage rocket with all solid-propellant motors. The first launch of the SLV took place in Sriharikota on 10 August 1979. The fourth and final launch of the SLV took place on 17 April 1983. It has taken approximately seven years to realise the vehicle from start. The solid motor case for first and second stage are fabricated from 15 CDV6 steel sheets and third and fourth stages from fibre reinforced plastic. Launch statistics Launch history All four SLV launches occurred from the SLV Launch Pad at the Sriharikota High Altitude Range. The first two launches were experimenta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Watt
The watt (symbol: W) is the unit of power or radiant flux in the International System of Units (SI), equal to 1 joule per second or 1 kg⋅m2⋅s−3. It is used to quantify the rate of energy transfer. The watt is named after James Watt (1736–1819), an 18th-century Scottish inventor, mechanical engineer, and chemist who improved the Newcomen engine with his own steam engine in 1776. Watt's invention was fundamental for the Industrial Revolution. Overview When an object's velocity is held constant at one metre per second against a constant opposing force of one newton, the rate at which work is done is one watt. : \mathrm In terms of electromagnetism, one watt is the rate at which electrical work is performed when a current of one ampere (A) flows across an electrical potential difference of one volt (V), meaning the watt is equivalent to the volt-ampere (the latter unit, however, is used for a different quantity from the real power of an electrical cir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Satish Dhawan Space Centre
Satish Dhawan Space Centre - SDSC (formerly Sriharikota Range - SHAR) is a rocket launch centre ( spaceport) operated by Indian Space Research Organisation (ISRO). It is located in Sriharikota, Tirupati district of Andhra Pradesh. Sriharikota Range was renamed in 2002 after ISRO's former chairman Satish Dhawan. History Sriharikota island was chosen in 1969 for a satellite launching station. The centre became operational in 1971 when an RH-125 sounding rocket was launched. The first attempted launch of an orbital satellite, Rohini 1A aboard a Satellite Launch Vehicle, took place on 10 August 1979, but due to a failure in thrust vectoring of the rocket's second stage, the satellite's orbit decayed on 19 August 1979. SHAR was named as 'Satish Dhawan Space Centre SHAR' (SDSC), on 5 September 2002, in memory of Satish Dhawan, former chairman of the ISRO. The SHAR facility now consists of two launch pads, with the second built in 2005. The second launch pad was used for launche ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Indian Satellites
This list covers most artificial satellites built in and operated by the Republic of India. India has been successfully launching satellites of various types from 1975. Apart from Indian rockets, these satellites have been launched from various vehicles, including American, Russian and European rockets sometimes as well. The organisation responsible for India's space program is Indian Space Research Organisation (ISRO) and it shoulders the bulk of the responsibility of designing, building, launching and operating these satellites. Legend This is a list of Indian (wholly or partially owned, wholly or partially designed and/or manufactured) satellites and orbital space crafts, both operated by the Indian government (ISRO, Indian defence forces, other government agencies) or private (educational and research) entities. All satellite launches marked successful have completed at least one full orbital flight (no sub-orbital flights have been included in this list). 1970s Indi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Space Programme Of India
The Department of Space is an Indian government department responsible for administration of the Indian space program. It manages several agencies and institutes related to space exploration and space technologies. The Indian space program under the DoS aims to promote the development and application of space science and technology for the socio-economic benefit of the country. It includes two major satellite systems, INSAT for communication, television broadcasting and meteorological services, and Indian Remote Sensing Satellites (IRS) system for resources monitoring and management. It has also developed two satellite launch vehicles Polar Satellite Launch Vehicle (PSLV) and Geosynchronous Satellite Launch Vehicle (GSLV) to place IRS and INSAT class satellites in orbit. History In 1961, the Government of India and then Prime Minister Jawaharlal Nehru entrusted the responsibility for space research and for the peaceful use of outer space to the Department of Atomic Energy (DAE) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Satellites Formerly Orbiting Earth
A satellite or artificial satellite is an object intentionally placed into orbit in outer space. Except for passive satellites, most satellites have an electricity generation system for equipment on board, such as solar panels or radioisotope thermoelectric generators (RTGs). Most satellites also have a method of communication to ground stations, called transponders. Many satellites use a standardized bus to save cost and work, the most popular of which is small CubeSats. Similar satellites can work together as a group, forming constellations. Because of the high launch cost to space, satellites are designed to be as lightweight and robust as possible. Most communication satellites are radio relay stations in orbit and carry dozens of transponders, each with a bandwidth of tens of megahertz. Satellites are placed from the surface to orbit by launch vehicles, high enough to avoid orbital decay by the atmosphere. Satellites can then change or maintain the orbit by propulsion, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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