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Eutelsat Quantum
Eutelsat Quantum is a communications satellite developed in the framework of a public-private partnership between the European Space Agency, Eutelsat and Airbus Defence and Space. Operated by Eutelsat, its design allows for it to reconfigure its radios coverage zone and alter its performance according its needs. It is located in a geostationary orbit and its longitude may be modified to cover any region in the world. The satellite was launched on 30 July 2021 by an Ariane 5 rocket, together with the Brazilian Star One D2 satellite. Quantum is Eutelsat's 36th and Airbus Defence and Space's 132nd satellite launched by Arianespace. The satellite uses conventional chemical thrusters. The payload, which operates in the Ku-band, has a power rating of 5 kW. A key component of the satellite is its phased-array antenna, which was produced by Airbus's Spanish division CASA. In-orbit reconfigurability The payload allows for the redefinition of its Ku-band beams with configurable ... [...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 circuit). : ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mitigation
Mitigation is the reduction of something harmful or the reduction of its harmful effects. It may refer to measures taken to reduce the harmful effects of hazards that remain ''in potentia'', or to manage harmful incidents that have already occurred. It is a stage or component of emergency management and of risk management. The theory of mitigation is a frequently used element in criminal law and is often used by a judge to try cases such as murder, where a perpetrator is subject to varying degrees of responsibility as a result of one's actions. Disaster mitigation An all-hazards approach to disaster management considers all known hazards and their natural and anthropogenic potential risks and impacts, with the intention of ensuring that measures taken to mitigate one type of risk do not increase vulnerability to other types of risks. Proactive disaster mitigation measures are generally more effective than reactive measures in eliminating or reducing the impacts, but not all dis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
UK Space Agency
The United Kingdom Space Agency (UKSA) is an executive agency of the Government of the United Kingdom, responsible for the United Kingdom's civil space programme. It was established on 1 April 2010 to replace the British National Space Centre (BNSC) and took over responsibility for government policy and key budgets for space exploration; it represents the United Kingdom in all negotiations on space matters. The Agency "ringstogether all UK civil space activities under one single management". It is based at the former BNSC headquarters in Swindon, Wiltshire. History and aims The creation of the UK Space Agency was first publicly announced and strongly supported by UK Minister of State for Science and Innovation, Lord Drayson, on 10 December 2009 during a speech at the Rutherford Appleton Lab (RAL) space conference. As the UK Space Agency neared its official opening day, Lord Mandelson, Lord Drayson and astronaut Tim Peake announced its establishment at the Queen Elizabeth II ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surrey Satellite Technology
Surrey Satellite Technology Ltd, or SSTL, is a company involved in the manufacture and operation of small satellites. A spin-off company of the University of Surrey, it is presently wholly owned by Airbus Defence and Space. The company began out of research efforts centred upon amateur radio satellites, known by the UoSAT (University of Surrey Satellite) name or by an OSCAR (Orbital Satellite Carrying Amateur Radio) designation. SSTL was founded in 1985, following successful trials on the use of commercial off-the-shelf (COTS) components on satellites, cumulating in the ''UoSat-1'' test satellite. It funds research projects with the university's Surrey Space Centre, which does research into satellite and space topics. In April 2008, the University of Surrey agreed to sell its majority share in the company to European multinational conglomerate EADS Astrium. In August 2008, SSTL opened a US subsidiary, which included both offices and a production site in Denver, Colorado; [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guildford
Guildford () is a town in west Surrey, around southwest of central London. As of the 2011 census, the town has a population of about 77,000 and is the seat of the wider Borough of Guildford, which had around inhabitants in . The name "Guildford" is thought to derive from a crossing of the River Wey, a tributary of the River Thames that flows through the town centre. The earliest evidence of human activity in the area is from the Mesolithic and Guildford is mentioned in the will of Alfred the Great from . The exact location of the main Anglo-Saxon settlement is unclear and the current site of the modern town centre may not have been occupied until the early 11th century. Following the Norman Conquest, a motte-and-bailey castle was constructed, which was developed into a royal residence by Henry III. During the late Middle Ages, Guildford prospered as a result of the wool trade and the town was granted a charter of incorporation by Henry VII in 1488. The River Wey Navig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portsmouth
Portsmouth ( ) is a port and city in the ceremonial county of Hampshire in southern England. The city of Portsmouth has been a unitary authority since 1 April 1997 and is administered by Portsmouth City Council. Portsmouth is the most densely populated city in the United Kingdom, with a population last recorded at 208,100. Portsmouth is located south-west of London and south-east of Southampton. Portsmouth is mostly located on Portsea Island; the only English city not on the mainland of Great Britain. Portsea Island has the third highest population in the British Isles after the islands of Great Britain and Ireland. Portsmouth also forms part of the regional South Hampshire conurbation, which includes the city of Southampton and the boroughs of Eastleigh, Fareham, Gosport, Havant and Waterlooville. Portsmouth is one of the world's best known ports, its history can be traced to Roman times and has been a significant Royal Navy dockyard and base for centuries. Portsm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Payload
Payload is the object or the entity which is being carried by an aircraft or launch vehicle. Sometimes payload also refers to the carrying capacity of an aircraft or launch vehicle, usually measured in terms of weight. Depending on the nature of the flight or mission, the payload of a vehicle may include cargo, passengers, flight crew, munitions, scientific instruments or experiments, or other equipment. Extra fuel, when optionally carried, is also considered part of the payload. In a commercial context (i.e., an airline or air freight carrier), payload may refer only to revenue-generating cargo or paying passengers. A payload of ordnance carried by a combat aircraft is sometimes alternatively referred to as the aircraft's warload. For a rocket, the payload can be a satellite, space probe, or spacecraft carrying humans, animals, or cargo. For a ballistic missile, the payload is one or more warheads and related systems; their total weight is referred to as the throw-weight. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United Kingdom
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the continental mainland. It comprises England, Scotland, Wales and Northern Ireland. The United Kingdom includes the island of Great Britain, the north-eastern part of the island of Ireland, and many smaller islands within the British Isles. Northern Ireland shares a land border with the Republic of Ireland; otherwise, the United Kingdom is surrounded by the Atlantic Ocean, the North Sea, the English Channel, the Celtic Sea and the Irish Sea. The total area of the United Kingdom is , with an estimated 2020 population of more than 67 million people. The United Kingdom has evolved from a series of annexations, unions and separations of constituent countries over several hundred years. The Treaty of Union between the Kingdom of England (which included Wales, annexed in 1542) and the Kingdom of Scotland in 170 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxford
Oxford () is a city in England. It is the county town and only city of Oxfordshire. In 2020, its population was estimated at 151,584. It is north-west of London, south-east of Birmingham and north-east of Bristol. The city is home to the University of Oxford, the oldest university in the English-speaking world; it has buildings in every style of English architecture since late Anglo-Saxon. Oxford's industries include motor manufacturing, education, publishing, information technology and science. History The history of Oxford in England dates back to its original settlement in the Saxon period. Originally of strategic significance due to its controlling location on the upper reaches of the River Thames at its junction with the River Cherwell, the town grew in national importance during the early Norman period, and in the late 12th century became home to the fledgling University of Oxford. The city was besieged during The Anarchy in 1142. The university rose to dom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harwell, Oxfordshire
Harwell is a village and civil parish in the Vale of White Horse about west of Didcot, east of Wantage and south of Oxford. The parish measures about north – south, and almost east – west at its widest point. In 1923 its area was . Historic counties of England, Historically in Berkshire, it has been administered as part of Oxfordshire, England, since the Local Government Act 1972, 1974 boundary changes. The parish includes part of the Milton Park business park in the north and part of Harwell Science and Innovation Campus in the southwest. In the east it includes part of the new Great Western Park housing estate that is contiguous with the built-up area of Didcot. The 2011 United Kingdom census, 2011 census recorded the parish's population as 2,349. Toponymy The earliest known surviving records of Harwell's name are 10th-century Saxon charters now reproduced in the ''Cartularium Saxonicum''. One from 956 records Horn Down, a nearby hill, as ''Harandúne'', which is deriv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
European Centre For Space Applications And Telecommunications
The European Centre for Space Applications and Telecommunications or ECSAT is a research center belonging to the European Space Agency (ESA) and located on the Harwell Science and Innovation Campus in Oxfordshire, United Kingdom. It was created in 2009 and moved to its present building in 2013. Staff work on activities linking space to telecommunications, integrated applications, climate change, technology and science. The development of ECSAT was in line with the growing efforts of the United Kingdom in the space sector, including the creation of the UK Space Agency in 2010 and the increase in the economic contribution of that country to ESA. At the same time, ESA benefited from a closer relation with the UK space sector and corrected an historical anomaly whereby the United Kingdom, while being one of the biggest ESA contributors, did not host any of the agency's major centers. There is an earlier ESA facility on the campus, the ESA Business Incubation Centre (BIC) Harwell, wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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