1.
Rocket
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A rocket is a missile, spacecraft, aircraft or other vehicle that obtains thrust from a rocket engine. Rocket engine exhaust is formed entirely from propellant carried within the rocket before use, Rocket engines work by action and reaction and push rockets forward simply by expelling their exhaust in the opposite direction at high speed, and can therefore work in the vacuum of space. In fact, rockets work more efficiently in space than in an atmosphere, multistage rockets are capable of attaining escape velocity from Earth and therefore can achieve unlimited maximum altitude. Compared with airbreathing engines, rockets are lightweight and powerful and capable of generating large accelerations. To control their flight, rockets rely on momentum, airfoils, auxiliary engines, gimballed thrust, momentum wheels, deflection of the exhaust stream, propellant flow, spin. Rockets for military and recreational uses date back to at least 13th century China, significant scientific, interplanetary and industrial use did not occur until the 20th century, when rocketry was the enabling technology for the Space Age, including setting foot on the Earths moon. Rockets are now used for fireworks, weaponry, ejection seats, launch vehicles for satellites, human spaceflight. Chemical rockets are the most common type of high power rocket, chemical rockets store a large amount of energy in an easily released form, and can be very dangerous. However, careful design, testing, construction and use minimizes risks, the first gunpowder-powered rockets were developed in Song China, by the 13th century. The Chinese rocket technology was adopted by the Mongols and the invention was spread via the Mongol invasions to the Near East, medieval and early modern rockets were used militarily as incendiary weapons in sieges. An early Chinese text to mention the use of rockets was the Huolongjing, between 1270 and 1280, Hasan al-Rammah wrote al-furusiyyah wa al-manasib al-harbiyya, which included 107 gunpowder recipes,22 of which are for rockets. In Europe, Konrad Kyeser described rockets in his military treatise Bellifortis around 1405. The name Rocket comes from the Italian rocchetta, meaning bobbin or little spindle, the Italian term was adopted into German in the mid 16th century by Leonhard Fronsperger and Conrad Haas, and by the early 17th century into English. Artis Magnae Artilleriae pars prima, an important early work on rocket artillery. The first iron-cased rockets were developed in the late 18th century in the Kingdom of Mysore, in 1814, Francis Scott Key wrote the line rockets red glare while held captive on a British ship that was laying siege to Fort McHenry. The first mathematical treatment of the dynamics of rocket propulsion is due to William Moore, in 1815, Alexander Dmitrievich Zasyadko constructed rocket-launching platforms, which allowed rockets to be fired in salvos, and gun-laying devices. William Hale in 1844 greatly increased the accuracy of rocket artillery, the Congreve rocket was further improved by Edward Mounier Boxer in 1865. Konstantin Tsiolkovsky first speculated on the possibility of manned spaceflight with rocket technology, robert Goddard in 1920 published proposed improvements to rocket technology in A Method of Reaching Extreme Altitudes
2.
Le Bourget
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Le Bourget is a commune in the northeastern suburbs of Paris, France. It is located 10.6 km from the center of Paris, the commune features Le Bourget Airport, which in turn hosts the Musée de lAir et de lEspace. A very small part of Le Bourget Airport lies on the territory of the commune of Le Bourget, most of the airport lies on the territory of the communes of Dugny, Bonneuil-en-France, and Gonesse. The Bureau dEnquêtes et dAnalyses pour la Sécurité de lAviation civile is also headquartered on the airport grounds, Le Bourget has been twinned with Amityville, New York since 1979 and Zhukovsky in Russia. Le Bourget is served by Le Bourget station on Paris RER line B, there is also an extensive freight rail yard with international traffic to Belgium, among others. The town is served by two major Highways, A1 autoroute in the north of the town, and A86 autoroute in the south of the city. Those two highways ensure a connection to major Paris Region hubs like La Defense, Bobigny, Roissy Charles de Gaulle Airport. Paris–Le Bourget Airport is the first business flights airport in Europe and it connects with 800 destinations in Europe The world-renowned Gagosian Gallery is located in Le Bourget airport area. Le Bourget houses the Crèche intercommunale Maryse Bastié, an intercommunal daycare, École maternelle Saint-Exupéry is the sole maternelle public nursery school in Le Bourget, while École primaire Louis Blériot is the sole élémentaire- only public school in Le Bourget. Two municipal schools, Groupe scolaire Jean Jaurès and Groupe scolaire Jean Mermoz, collège Didier Daurat is the sole municipal collège. There is one high school, Lycée Germaine Tillion. Institution Privée Sainte-Marie, serving the maternelle, élémentaire and collège levels, is the private school in Le Bourget. The 350-square-metre Le Bourget Public Library has 45,000 books and it is located within the Urban Community of Le Bourget Airport. Communes of the Seine-Saint-Denis department Citations Bibliography INSEE Commune of Le Bourget
3.
European Space Agency
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The European Space Agency is an intergovernmental organisation of 22 member states, dedicated to the exploration of space. Established in 1975 and headquartered in Paris, France, ESA has a staff of about 2,000. The main European launch vehicle Ariane 5 is operated through Arianespace with ESA sharing in the costs of launching, after World War II, many European scientists left Western Europe in order to work with the United States. The meeting was attended by representatives from eight countries, including Harrie Massey. The Western European nations decided to have two different agencies, one concerned with developing a system, ELDO, and the precursor of the European Space Agency. The latter was established on 20 March 1964 by an agreement signed on 14 June 1962, from 1968 to 1972, ESRO launched seven research satellites. ESA in its current form was founded with the ESA Convention in 1975, ESA has 10 founding member states, Belgium, Denmark, France, Germany, Italy, the Netherlands, Spain, Sweden, Switzerland and the United Kingdom. These signed the ESA Convention in 1975 and deposited the instruments of ratification by 1980, during this interval the agency functioned in a de facto fashion. ESA launched its first major scientific mission in 1975, Cos-B, ESA joined NASA in the IUE, the worlds first high-orbit telescope, which was launched in 1978 and operated very successfully for 18 years. A number of successful Earth-orbit projects followed, and in 1986 ESA began Giotto, its first deep-space mission, to study the comets Halley and Grigg–Skjellerup. Hipparcos, a mission, was launched in 1989 and in the 1990s SOHO, Ulysses. Recent scientific missions in co-operation with NASA include the Cassini–Huygens space probe, as the successor of ELDO, ESA has also constructed rockets for scientific and commercial payloads. Ariane 1, launched in 1979, brought mostly commercial payloads into orbit from 1984 onward, the successor launch vehicle of Ariane 5, the Ariane 6 is already in the definition stage and is envisioned to enter service in the 2020s. The beginning of the new millennium saw ESA become, along with agencies like NASA, JAXA, ISRO, CSA and Roscosmos, one of the major participants in scientific space research. Although ESA had relied on co-operation with NASA in previous decades, especially the 1990s, changed circumstances led to decisions to rely more on itself, a 2011 press issue thus stated, Russia is ESAs first partner in its efforts to ensure long-term access to space. ESA maintains its scientific and research projects mainly for astronomy-space missions such as Corot, launched on 27 December 2006 and this is the reason space exploration is an integral part of overall space activities. It has always been so, and it will be more important in the future. ESA describes its work in two overlapping ways, For the general public the various fields of work are described as Activities, Member states participate to varying degrees in the mandatory and optional space programmes
4.
Guiana Space Centre
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The Guiana Space Centre or, more commonly, Centre Spatial Guyanais is a French and European spaceport to the northwest of Kourou in French Guiana. The European Space Agency, the French space agency CNES, and this was the spaceport used by the ESA to send supplies to the International Space Station using the Automated Transfer Vehicle. The location was selected in 1964 to become the spaceport of France, in 1975, France offered to share Kourou with ESA. Commercial launches are bought also by non-European companies, ESA pays two thirds of the spaceports annual budget and has also financed the upgrades made during the development of the Ariane launchers. Since April 4,2017, the centre has been occupied by 30 labor union leaders in the midst of the 2017 social unrest in French Guiana, Kourou is located approximately 500 kilometres north of the equator, at a latitude of 5°10. The near-equatorial launch location provides an advantage for launches to low-inclination Earth orbits compared to launches from spaceports at higher latitude, the proximity to the equator also makes maneuvering satellites for geosynchronous orbits simpler and less costly. Originally built in the 1960s under the name of CECLES, the ELV pad located at 5. 236°N52. 775°W /5.236, one Europa-II was launched from the site, before the programme was cancelled. The pad was demolished, and subsequently rebuilt as the first launch complex for Ariane rockets, renamed ELA, it was used for Ariane 1 and Ariane 2 and 3 launches until being retired in 1989. It was again refurbished for the Vega with the first launch performed on 13 February 2012, the ELA2 pad, located at 5. 232°N52. 776°W /5.232, -52.776 had been used for Ariane 4 launches until 2003. ELA3 has been active for Ariane 5 launches since 1996 and this facility is located at 5. 239°N52. 768°W /5.239, -52.768 and covers an area of 21 square kilometres. ESA has built ELS at 5. 305°N52. 834°W /5.305, the first Soyuz launch from ELS was postponed several times, but launched on October 21,2011. ELS is located on the territory of Sinnamary commune,27 km from Kourou harbor and it is 10 km north of the site used for the Ariane 5 launches. Russia will use the Guiana Space Centre in addition to Baikonur Cosmodrome, the Guiana location has the significant benefit of greatly increased payload capability, owing to the near equatorial position. A Soyuz rocket with a 1.7 tonnes to geostationary transfer orbit performance from Baikonur, the ELS project is being co-funded by Arianespace, ESA, and the European Union, with CNES being the prime contractor. The project has a projected cost of approximately €320 million, where €120 million are allocated for modernizing the Soyuz vehicle, the official opening of the launch site construction occurred on 27 February 2007. Excavation work however, had begun several months beforehand. By October 2010,18 launch contracts had been signed, Arianespace has ordered 24 launchers from Russian industry. On October 21,2011, two Galileo IOV-1 & IOV-2 satellites were launched using a Soyuz-ST rocket, in the first Russian Soyuz vehicle ever launched from Europes Spaceport in French Guiana, astrium assembles each Ariane 5 launcher in the Launcher Integration Building
5.
Solid-propellant rocket
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A solid-propellant rocket or solid rocket is a rocket with a rocket engine that uses solid propellants. The earliest rockets were solid-fuel rockets powered by gunpowder, they were used in warfare by the Chinese, Indians, Mongols and Persians, all rockets used some form of solid or powdered propellant up until the 20th century, when liquid-propellant rockets offered more efficient and controllable alternatives. Solid rockets are used today in model rockets and on larger applications for their simplicity and reliability. Since solid-fuel rockets can remain in storage for periods, and then reliably launch on short notice. Solids are, however, frequently used as boosters to increase payload capacity or as spin-stabilized add-on upper stages when higher-than-normal velocities are required. Solid rockets are used as launch vehicles for low Earth orbit payloads under 2 tons or escape payloads up to 500 kilograms. A simple solid rocket motor consists of a casing, nozzle, grain, the grain behaves like a solid mass, burning in a predictable fashion and producing exhaust gases. The nozzle dimensions are calculated to maintain a design chamber pressure, once ignited, a simple solid rocket motor cannot be shut off, because it contains all the ingredients necessary for combustion within the chamber in which they are burned. More advanced solid rocket motors can not only be throttled but also be extinguished, also, pulsed rocket motors that burn in segments and that can be ignited upon command are available. Design begins with the total impulse required, which determines the fuel/oxidizer mass, grain geometry and chemistry are then chosen to satisfy the required motor characteristics. The following are chosen or solved simultaneously, the results are exact dimensions for grain, nozzle, and case geometries, The grain burns at a predictable rate, given its surface area and chamber pressure. The chamber pressure is determined by the orifice diameter and grain burn rate. Allowable chamber pressure is a function of casing design, the length of burn time is determined by the grain web thickness. The grain may or may not be bonded to the casing, case-bonded motors are more difficult to design, since the deformation of the case and the grain under flight must be compatible. Common modes of failure in rocket motors include fracture of the grain, failure of case bonding. All of these produce an increase in burn surface area and a corresponding increase in exhaust gas production rate and pressure. Another failure mode is casing seal failure, seals are required in casings that have to be opened to load the grain. Once a seal fails, hot gas will erode the escape path and this was the cause of the Space Shuttle Challenger disaster
6.
Commercial use of space
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Commercial use of space is the provision of goods or services of commercial value by using equipment sent into Earth orbit or outer space. Examples of the use of space include satellite navigation, satellite television. Operators of such services typically contract the manufacturing of satellites and their launch to private or public companies, some commercial ventures have long-terms plans to exploit natural resources originating outside Earth, for example asteroid mining. Space tourism, currently an exceptional activity, could also be an area of growth, as new businesses strive to reduce the costs. The first commercial use of space occurred in 1962, when the Telstar 1 satellite was launched to transmit television signals over the Atlantic ocean. By 2004, global investment in all sectors was estimated to be $50.8 billion. As of 2010, 31% of all launches were commercial. The first commercial use of satellites may have been the Telstar 1 satellite, launched in 1962, Telstar 1 was capable of relaying television signals across the Atlantic Ocean, and was the first satellite to transmit live television, telephone, fax, and other data signals. Two years later, the Hughes Aircraft Company developed the Syncom 3 satellite, Commercial possibilities of satellites were further realized when the Syncom 3, orbiting near the International Date Line, was used to telecast the 1964 Olympic Games from Tokyo to the United States. Between 1960 and 1966, NASA launched a series of weather satellites known as Television Infrared Observation Satellites. These satellites greatly advanced meteorology worldwide, as satellite imagery was used for better forecasting, on April 6,1965, the Hughes Aircraft Company placed the Intelsat I communications satellite geosynchronous orbit over the Atlantic Ocean. Intelsat I was built for the Communications Satellite Corporation, and demonstrated that satellite-based communication was commercially feasible, Intelsat I allowed for near-instantaneous contact between Europe and North America by handling television, telephone and fax transmissions. Two years later, the Soviet Union launched the Orbita satellite, which provided television signals across Russia, similarly, the 1972 Anik A satellite, launched by Telesat Canada, allowed the Canadian Broadcasting Corporation to reach northern Canada for the first time. The commercial space transportation industry derives the bulk of its revenue from the launching of satellites into the Earth’s orbit, Commercial launch providers typically place private and government satellites into low Earth orbit and geosynchronous Earth orbit. In 2002, commercial space transportation generated 6.6 billion dollars, Launch sites within Russia and China have added to the global commercial launch capacity. The Delta IV and Atlas V family of vehicles are made available for commercial ventures for the United States. The three largest Russian systems are the Proton, Soyuz, and Zenit, between 1996 and 2002,245 launches were made for commercial ventures while government launches only total 167 for the same period. Commercial space flight has spurred investment into the development of an efficient reusable launch vehicle which can place payloads into orbit
7.
France
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France, officially the French Republic, is a country with territory in western Europe and several overseas regions and territories. The European, or metropolitan, area of France extends from the Mediterranean Sea to the English Channel and the North Sea, Overseas France include French Guiana on the South American continent and several island territories in the Atlantic, Pacific and Indian oceans. France spans 643,801 square kilometres and had a population of almost 67 million people as of January 2017. It is a unitary republic with the capital in Paris. Other major urban centres include Marseille, Lyon, Lille, Nice, Toulouse, during the Iron Age, what is now metropolitan France was inhabited by the Gauls, a Celtic people. The area was annexed in 51 BC by Rome, which held Gaul until 486, France emerged as a major European power in the Late Middle Ages, with its victory in the Hundred Years War strengthening state-building and political centralisation. During the Renaissance, French culture flourished and a colonial empire was established. The 16th century was dominated by civil wars between Catholics and Protestants. France became Europes dominant cultural, political, and military power under Louis XIV, in the 19th century Napoleon took power and established the First French Empire, whose subsequent Napoleonic Wars shaped the course of continental Europe. Following the collapse of the Empire, France endured a succession of governments culminating with the establishment of the French Third Republic in 1870. Following liberation in 1944, a Fourth Republic was established and later dissolved in the course of the Algerian War, the Fifth Republic, led by Charles de Gaulle, was formed in 1958 and remains to this day. Algeria and nearly all the colonies became independent in the 1960s with minimal controversy and typically retained close economic. France has long been a centre of art, science. It hosts Europes fourth-largest number of cultural UNESCO World Heritage Sites and receives around 83 million foreign tourists annually, France is a developed country with the worlds sixth-largest economy by nominal GDP and ninth-largest by purchasing power parity. In terms of household wealth, it ranks fourth in the world. France performs well in international rankings of education, health care, life expectancy, France remains a great power in the world, being one of the five permanent members of the United Nations Security Council with the power to veto and an official nuclear-weapon state. It is a member state of the European Union and the Eurozone. It is also a member of the Group of 7, North Atlantic Treaty Organization, Organisation for Economic Co-operation and Development, the World Trade Organization, originally applied to the whole Frankish Empire, the name France comes from the Latin Francia, or country of the Franks
8.
Europa (rocket)
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The Europa rocket was an early expendable launch system of the European Launcher Development Organisation, which was the precursor to the European Space Agency and its Ariane family of launchers. Europa was built to develop space technology and put European-wide telecommunication. The rocket primarily consisted of Blue Streak, Coralie, and Astris rocket stages, the British Blue Streak ballistic missile was cancelled in 1960, when it was realised it could not compete with the types of missile that the Americans or Russians were building. As part of deciding how to implement Blue Streak inconspicuously, the British inadvertently arrived at the concept of the launch facility. The difficult storage of oxygen in the rocket stalled the introduction of Blue Streak. The Royal Aircraft Establishment at Farnborough was given the job of considering how the missile could be adapted as a launching vehicle. A possible Anglo-French collaboration was looked at, and ELDO was signed on 16 April 1962, the three-stage design was arrived at, and given the name Eldo A, later named Europa. It would still use the Blue Streak as the first stage, ELDO later disagreed, but the French would get their way, as Eldo B would become Ariane, first launching in 1979. The programme was initiated by the UK and the first launch was planned for November 1966, by April 1966, estimated costs had increased to £150 million, from an initial estimated of £70 million. Hopes were not high that it would be suitable for the job, the Italians wanted to give up on ELDO and go for a single European space organisation, not divided nationally as ELDO. Britain was contributing 40% of the costs, in early June 1966, the British government decided it could not afford the cost, and wanted to leave the ELDO organisation - one of the few European organisations in which it was a lead player. This was also at a time when technology was about to change the world. But geosynchronous satellites would need to be 22,000 miles above Earth, Britains contribution was reduced to 27%. In mid-November 1968, a European Space Conference in Bonn decided on a proposal to merge ELDO with ESRO to form a pan-European space authority by early 1970, Britain was lukewarm to the idea, because it did not believe Europe could launch satellites economically. Although only on paper, Britains involvement in the project was much reduced, however all of the launchers, to the very end, were completely dependent on the British rocket in the first stage. In 1970 the project was under an economic threat from Americas offer to fly satellites for foreign powers on a reimbursable basis. That agreement had been signed between ESRO and NASA on 30 December 1966 and by 1970 it was becoming clear that the advantage in having a national launch vehicle was insufficient to justify the cost. In 1972 NASA approved development of the Shuttle which many perceived would offer savings in having satellites launched on this system
9.
Germany
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Germany, officially the Federal Republic of Germany, is a federal parliamentary republic in central-western Europe. It includes 16 constituent states, covers an area of 357,021 square kilometres, with about 82 million inhabitants, Germany is the most populous member state of the European Union. After the United States, it is the second most popular destination in the world. Germanys capital and largest metropolis is Berlin, while its largest conurbation is the Ruhr, other major cities include Hamburg, Munich, Cologne, Frankfurt, Stuttgart, Düsseldorf and Leipzig. Various Germanic tribes have inhabited the northern parts of modern Germany since classical antiquity, a region named Germania was documented before 100 AD. During the Migration Period the Germanic tribes expanded southward, beginning in the 10th century, German territories formed a central part of the Holy Roman Empire. During the 16th century, northern German regions became the centre of the Protestant Reformation, in 1871, Germany became a nation state when most of the German states unified into the Prussian-dominated German Empire. After World War I and the German Revolution of 1918–1919, the Empire was replaced by the parliamentary Weimar Republic, the establishment of the national socialist dictatorship in 1933 led to World War II and the Holocaust. After a period of Allied occupation, two German states were founded, the Federal Republic of Germany and the German Democratic Republic, in 1990, the country was reunified. In the 21st century, Germany is a power and has the worlds fourth-largest economy by nominal GDP. As a global leader in industrial and technological sectors, it is both the worlds third-largest exporter and importer of goods. Germany is a country with a very high standard of living sustained by a skilled. It upholds a social security and universal health system, environmental protection. Germany was a member of the European Economic Community in 1957. It is part of the Schengen Area, and became a co-founder of the Eurozone in 1999, Germany is a member of the United Nations, NATO, the G8, the G20, and the OECD. The national military expenditure is the 9th highest in the world, the English word Germany derives from the Latin Germania, which came into use after Julius Caesar adopted it for the peoples east of the Rhine. This in turn descends from Proto-Germanic *þiudiskaz popular, derived from *þeudō, descended from Proto-Indo-European *tewtéh₂- people, the discovery of the Mauer 1 mandible shows that ancient humans were present in Germany at least 600,000 years ago. The oldest complete hunting weapons found anywhere in the world were discovered in a mine in Schöningen where three 380, 000-year-old wooden javelins were unearthed
10.
Willy Brandt
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He was the first Social Democrat chancellor since 1930. Brandt was originally considered one of the leaders of the wing of the SPD. He served as Foreign Minister and as Vice Chancellor in Kurt Georg Kiesingers cabinet, Brandt was controversial on both the right wing, for his Ostpolitik, and on the left wing, for his support of American policies, including the Vietnam War, and right-wing authoritarian regimes. The Brandt Report became a measure for describing the general North-South divide in world economics and politics between an affluent North and a poor South. Brandt was also known for his fierce anti-communist policies at the domestic level, Brandt resigned as chancellor in 1974, after Günter Guillaume, one of his closest aides, was exposed as an agent of the Stasi, the East German secret service. Willy Brandt was born Herbert Ernst Carl Frahm in the Free City of Lübeck on 18 December 1913 and his mother was Martha Frahm, a single parent, who worked as a cashier for a department store. His father was an accountant from Hamburg named John Möller, whom Brandt never met, as his mother worked six days a week, he was mainly brought up by his mothers stepfather, Ludwig Frahm, and his second wife, Dora. After passing his Abitur in 1932 at Johanneum zu Lübeck, he became an apprentice at the shipbroker and he joined the Socialist Youth in 1929 and the Social Democratic Party in 1930. He left the SPD to join the left wing Socialist Workers Party, which was allied to the POUM in Spain. In 1933, using his connections with the port and its ships and it was at this time that he adopted the pseudonym Willy Brandt to avoid detection by Nazi agents. In 1934, he took part in the founding of the International Bureau of Revolutionary Youth Organizations, Brandt was in Germany from September to December 1936, disguised as a Norwegian student named Gunnar Gaasland. The real Gunnar Gaasland was married to Gertrud Meyer from Lübeck in a marriage of convenience to protect her from deportation, Meyer had joined Brandt in Norway in July 1933. In 1937, during the Civil War, Brandt worked in Spain as a journalist, in 1938, the German government revoked his citizenship, so he applied for Norwegian citizenship. In 1940, he was arrested in Norway by occupying German forces, on his release, he escaped to neutral Sweden. In August 1940, he became a Norwegian citizen, receiving his passport from the Norwegian legation in Stockholm, in exile in Norway and Sweden Brandt learned Norwegian and Swedish. Brandt spoke Norwegian fluently, and retained a relationship with Norway. In late 1946, Brandt returned to Berlin, working for the Norwegian government, in 1948, he joined the Social Democratic Party of Germany and became a German citizen again, formally adopting the pseudonym Willy Brandt as his legal name. In 1950, Brandt, being a member of the federal parliament, being confronted with this during his life, Brandt always denied
11.
Chancellor of Germany
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The Chancellor of Germany is the head of government of Germany. The official title in German is Bundeskanzler, sometimes shortened to Kanzler, the term, dating from the early Middle Ages, is derived from the Latin term cancellarius. In German politics, the Chancellor is equivalent to that of a minister in many other countries. German has two equivalent translations of prime minister, Premierminister and Ministerpräsident, while Premierminister usually refers to heads of governments of foreign countries, Ministerpräsident may also refer to the heads of government of most German states. The current Chancellor is Angela Merkel, who is serving her term in office. She is the first female chancellor, thus being known in German as Bundeskanzlerin, the role of the Chancellor has varied greatly throughout Germanys modern history. Today, the Chancellor is the effective leader. The office of Chancellor has a history, stemming back to the Holy Roman Empire. The title was, at times, used in several states of German-speaking Europe, the modern office of Chancellor was established with the North German Confederation, of which Otto von Bismarck became Chancellor in 1867. After the Unification of Germany in 1871, the became known in German as Reichskanzler. With Germanys constitution of 1949, the title Bundeskanzler was revived in German, during the various eras, the role of the Chancellor has varied. From 1871 to 1918, the Chancellor was only responsible to the Emperor, with the founding of the republic and the constitutional reform in 1918, the Parliament was granted the right to dismiss the Reichskanzler. According to the Weimar Constitution of 1919, the Chancellor was appointed by the President and responsible to Parliament, when the Nazis came to power on 30 January 1933, the Weimar Constitution was de facto set aside. After the death of President Hindenburg in 1934, Adolf Hitler, the 1949 constitution gave the Chancellor much greater powers than during the Weimar Republic, while strongly diminishing the role of the President. Since 1867,33 individuals have served as heads of government of Germany or its predecessor, due to his administrative tasks, the head of the clerics at the chapel of an Imperial palace during the Carolingian Empire was called Chancellor. The chapels college acted as the Emperors chancery issuing deeds and capitularies and these three Prince-Archbishops were also Prince-electors of the Empire electing the King of the Romans. Already in medieval times, the German Chancellor had political power like Archbishop Willigis or Rainald von Dassel under Emperor Frederick Barbarossa. In 1559, Emperor Ferdinand I established the agency of an Imperial chancellery at the Vienna Hofburg Palace, upon the 1620 Battle of White Mountain, Emperor Ferdinand II created the office of an Austrian Court Chancellor in charge of the internal and foreign affairs of the Habsburg Monarchy
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