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Rohini Satellite 1
Rohini Satellite 1 or RS-1 is the first satellite successfully launched by India using indigenously developed rockets. After the launch on 18 July 1980 by a SLV rocket, India became the 7th country to have rocket launching capability. The satellite was spin-stabilised and provided data regarding the fourth stage of SLV rocket. Launch Launched 8:04 AM IST from Satish Dhawan Space Centre, it was the first successful orbital launch from the centre. It achieved orbit with an inclination of 44.7°, 8 minutes after the launch. It was launched after the failure of the first two SLV launches. The SLV rocket consisted of 25 km wiring, containing a million connections. 44 major systems and 250 subsystems were in the rocket. Individual components numbered about 100,000, and included almost 40,000 fasteners. At the time of launch, it weighed 17 tonnes and had a height of 22 meters. The vehicle's trajectory was monitored by four long and medium range radars. Long-range Interfer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Earth Observation Satellite
An Earth observation satellite or Earth remote sensing satellite is a satellite used or designed for Earth observation (EO) from orbit, including spy satellites and similar ones intended for non-military uses such as environmental monitoring, meteorology, cartography and others. The most common type are Earth imaging satellites, that take satellite images, analogous to aerial photographs; some EO satellites may perform remote sensing without forming pictures, such as in GNSS radio occultation. The first occurrence of satellite remote sensing can be dated to the launch of the first artificial satellite, Sputnik 1, by the Soviet Union on October 4, 1957. Sputnik 1 sent back radio signals, which scientists used to study the ionosphere. The United States Army Ballistic Missile Agency launched the first American satellite, Explorer 1, for NASA's Jet Propulsion Laboratory on January 31, 1958. The information sent back from its radiation detector led to the discovery of the Earth's Van ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indian Space Research Organisation
The Indian Space Research Organisation (ISRO ) is India's national List of government space agencies, space agency, headquartered in Bengaluru, Karnataka. It serves as the principal research and development arm of the Department of Space (DoS), overseen by the Prime Minister of India, with the Chairperson of the Indian Space Research Organisation, Chairman of ISRO also serving as the chief executive of the DoS. It is primarily responsible for space-based operations, space exploration, international space cooperation and the development of related technologies. The agency maintains a constellation of Earth observation satellite, imaging, Communications satellite, communications and remote sensing satellites. It operates the GPS-aided GEO augmented navigation, GAGAN and Indian Regional Navigation Satellite System, IRNSS satellite navigation systems. It has sent Chandrayaan programme, three missions to the Moon and Mars Orbiter Mission, one mission to Mars. Formerly known as the In ... [...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 (ISRO) 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, 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 took approximately seven years to realise the vehicle from start. The solid motor case for first and second stage were fabricated from 15 CDV6 steel sheets and third and fourth stages from fibre reinforced plastic. The aerodynamic characterization research was conducted at the National Aerospace Laboratories' 1.2m Trisonic Wind Tunnel Facility. Launch history All four SLV launches occ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Satish Dhawan Space Centre
Satish Dhawan Space Centre – SDSC (formerly Sriharikota Range – SHAR) is the primary spaceport of the Indian Space Research Organisation (ISRO), located in Sriharikota, Tirupati district, Andhra Pradesh. The spaceport is located on an island off the east coast of India, surrounded by Pulicat Lake and the Bay of Bengal. The distance of Sriharikota from Chennai is . The Centre currently has three functioning launch pads used for launching sounding rockets, polar satellites and geosynchronous satellites. India's Lunar exploration probes Chandrayaan-1, Chandrayaan-2, Chandrayaan-3, Mars Orbiter Mission, solar research mission Aditya-L1 and space observatory XPoSat were also launched from SDSC. Originally called Sriharikota Range (SHAR), the centre was renamed on 5 September 2002 as a tribute to ISRO's former chairman Satish Dhawan with retaining its original acronym and is referred as SDSC-SHAR. History Sriharikota island was chosen in 1969 for a satellite launchi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geocentric Orbit
A geocentric orbit, Earth-centered orbit, or Earth orbit involves any object orbiting Earth, such as the Moon or artificial satellites. In 1997, NASA estimated there were approximately 2,465 artificial satellite payloads orbiting Earth and 6,216 pieces of space debris as tracked by the Goddard Space Flight Center. More than 16,291 objects previously launched have undergone orbital decay and entered Earth's atmosphere. A spacecraft enters orbit when its centripetal acceleration due to gravity is less than or equal to the centrifugal acceleration due to the horizontal component of its velocity. For a low Earth orbit, this velocity is about ; by contrast, the fastest crewed airplane speed ever achieved (excluding speeds achieved by deorbiting spacecraft) was in 1967 by the North American X-15. The energy required to reach Earth orbital velocity at an altitude of is about 36 MJ/kg, which is six times the energy needed merely to climb to the corresponding altitude. Spa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Low Earth Orbit
A low Earth orbit (LEO) is an geocentric orbit, orbit around Earth with a orbital period, period of 128 minutes or less (making at least 11.25 orbits per day) and an orbital eccentricity, eccentricity less than 0.25. Most of the artificial objects in outer space are in LEO, peaking in number at an altitude around , while the farthest in LEO, before medium Earth orbit (MEO), have an altitude of 2,000 km, about one-third of the Earth radius, radius of Earth and near the beginning of the Van Allen radiation belt#Inner belt, inner Van Allen radiation belt. The term ''LEO region'' is 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 spaceflight, sub-orbital, are carefully tracked since they present a collision risk to the many LEO satellites. No human spaceflights other than the lunar missions of the Apollo program (1968-1972) have gone beyond L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rohini (satellite)
Rohini is a series of satellites launched by the Indian Space Research Organisation (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, with the first launch being in 1979. There was an earlier series of ISRO sounding rockets with the same name, first launched 1967. 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. The satellite could not be placed into its intended orbit. Rohini 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 successfull ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rohini Technology Payload
Rohini may refer to: People * Rohini (given name), including a list of persons and characters with the name * 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 * Rohini Nanayakkara, retired bank executive from Sri Lanka 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), a series of Indian space satellites * Rohini sounding rocket series, Indian rockets developed for meteorological and atmospheric study purposes * Rohini River The Rohni (also known as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Timeline Of First Orbital Launches By Country
This is a timeline of first orbital launches by country. While a number of countries, incl. Canada, Australia, Germany, Brazil, Algeria, Kazakhstan, Turkey, Argentina, Italy, Malaysia, Poland, South Africa, the Philippines, Egypt, Spain, Mexico, Thailand and Chile, have built or launched satellites, as of 2022, eleven countries, incl. the United States, Japan, China, India, Iran, Israel, France, the United Kingdom and South Korea, have had the capability to send objects into orbit with their own launch vehicles. Russia and Ukraine inherited the capability of the space launchers and satellites from the Soviet Union, following its dissolution in 1991. Russia launches its rockets from its own and foreign ( Kazakh) spaceports. Ukraine launched only from foreign (Kazakh and Russian) launch facilities until 2015, after which political differences with Russia effectively halted Ukraine's ability to produce orbital rockets. France became a space power independently, launching a payloa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vikram Sarabhai Space Centre
The Vikram Sarabhai Space Centre (VSSC) is a major space research centre of the Indian Space Research Organisation (ISRO), focusing on rocket and space vehicles for India's satellite programme. It is located in Thiruvananthapuram, in the Indian state of Kerala. The centre had its beginnings as the Thumba Equatorial Rocket Launching Station (TERLS) in 1962. It was renamed in honour of Vikram Sarabhai, often regarded as the father of the Indian space program. H.G.S. Murthy was appointed as the first director of Thumba Equatorial Rocket Launching Station. The Vikram Sarabhai Space Centre is one of the main and largest research and development establishments within ISRO. VSSC is an entirely indigenous facility working on the development of sounding rockets, the Rohini and Menaka launchers, and SLV, ASLV, PSLV, GSLV and LVM3 families of launch vehicles. History After incorporation of the Indian National Committee for Space Research (INCOSPAR) in 1962, its first act was t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
