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Hermann Oberth
Hermann Julius Oberth (; 25 June 1894 – 28 December 1989) was an Austro-Hungarian-born German physicist and engineer. He is considered one of the founding fathers of rocketry and astronautics, along with Robert Esnault-Pelterie, Konstantin Tsiolkovsky, Robert Goddard and Herman Potočnik.During WWII he supported Nazi Germany's ''Aggregat'' rocket program. Early life Oberth was born to a Transylvanian Saxon family in Nagyszeben (Hermannstadt), Austrian-Hungary Empire (today Sibiu in Romania). He was fluent in Romanian language. At the age of 11 years, Oberth's interest in rocketry was set off by the novels of Jules Verne, especially ''From the Earth to the Moon'' and ''Around the Moon''. He was fond of reading them over and over until they were engraved in his memory. As a result, Oberth constructed his first model rocket as a school student at the age of 14. In his youthful experiments, he arrived independently at the concept of the multistage rocket. However, during this ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hermannstadt
Sibiu ( , , german: link=no, Hermannstadt , la, Cibinium, Transylvanian Saxon: ''Härmeschtat'', hu, Nagyszeben ) is a city in Romania, in the historical region of Transylvania. Located some north-west of Bucharest, the city straddles the Cibin River, a tributary of the river Olt. Now the capital of the Sibiu County, between 1692 and 1791 and 1849–65 Sibiu was also the capital of the Principality of Transylvania. Nicknamed ''The City with Eyes'', the city is a well-known tourist destination for both domestic and foreign visitors. Known for its culture, history, gastronomy and diverse architecture, which includes the iconic houses with eyes that gave Sibiu its nickname, the city has garnered significant attention since the beginning of the 21st century. In 2004, its historical center began the process of becoming a UNESCO World Heritage Site. Sibiu was designated the European Capital of Culture in 2007. One year later, it was ranked "Europe's 8th-most idyllic place to live ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astronautics
Astronautics (or cosmonautics) is the theory and practice of travel beyond Earth's atmosphere into outer space. Spaceflight is one of its main applications and space science its overarching field. The term ''astronautics'' (originally ''astronautique'' in French) was coined in the 1920s by J.-H. Rosny, president of the Goncourt academy, in analogy with aeronautics. Because there is a degree of technical overlap between the two fields, the term aerospace is often used to describe both at once. In 1930, Robert Esnault-Pelterie published the first book on the new research field. The term ''cosmonautics'' (originally ''cosmonautique'' in French) was introduced in 1930s by Ary Sternfeld with his book ''Initiation à la Cosmonautique'' (Introduction to cosmonautics) (the book brought him the Prix REP-Hirsch, later known as the Prix d'Astronautique, of the French Astronomical Society in 1934.) As with aeronautics, the restrictions of mass, temperatures, and external forces require t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Multistage Rocket
A multistage rocket or step rocket is a launch vehicle that uses two or more rocket ''stages'', each of which contains its own engines and propellant. A ''tandem'' or ''serial'' stage is mounted on top of another stage; a ''parallel'' stage is attached alongside another stage. The result is effectively two or more rockets stacked on top of or attached next to each other. Two-stage rockets are quite common, but rockets with as many as five separate stages have been successfully launched. By jettisoning stages when they run out of propellant, the mass of the remaining rocket is decreased. Each successive stage can also be optimized for its specific operating conditions, such as decreased atmospheric pressure at higher altitudes. This ''staging'' allows the thrust of the remaining stages to more easily accelerate the rocket to its final speed and height. In serial or tandem staging schemes, the first stage is at the bottom and is usually the largest, the second stage and subseq ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Model Rocket
A model rocket are small rockets designed to reach low altitudes (e.g., for model) and be recovered by a variety of means. According to the United States National Association of Rocketry (NAR) Safety Code, model rockets are constructed of paper, wood, plastic and other lightweight materials. The code also provides guidelines for motor use, launch site selection, launch methods, launcher placement, recovery system design and deployment and more. Since the early 1960s, a copy of the Model Rocket Safety Code has been provided with most model rocket kits and motors. Despite its inherent association with extremely flammable substances and objects with a pointed tip traveling at high speeds, model rocketry historically has proven to be a very safe hobby and has been credited as a significant source of inspiration for children who eventually become scientists and engineers. History of model rocketry While there were many small rockets produced after years of research and experime ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Around The Moon
''Around the Moon'' (french: Autour de la Lune, 1869), also translated as ''Circling the Moon'' and ''All Around the Moon'', is the sequel to Jules Verne's 1865 novel, ''From the Earth to the Moon''. It is a science fiction tale which continues the trip to the Moon that was only begun in the first novel. Later English editions sometimes combined the two under the title ''From the Earth to the Moon and Around It''. ''From the Earth to the Moon'' and ''Around the Moon'' served as the basis for the 1902 film '' A Trip to the Moon''. Plot Having been fired out of the giant Columbiad space gun, the Baltimore Gun Club's bullet-shaped projectile, along with its three passengers, Barbicane, Nicholl and Michel Ardan, begins the five-day trip to the Moon. A few minutes into the journey, a small, bright asteroid passes within a few hundred yards of them, but does not collide with the projectile. The asteroid had been captured by the Earth's gravity and had become a second moon. The thre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
From The Earth To The Moon
''From the Earth to the Moon: A Direct Route in 97 Hours, 20 Minutes'' (french: De la Terre à la Lune, trajet direct en 97 heures 20 minutes) is an 1865 novel by Jules Verne. It tells the story of the Baltimore Gun Club, a post-American Civil War society of weapons enthusiasts, and their attempts to build an enormous Columbiad space gun and launch three people—the Gun Club's president, his Philadelphian armor-making rival, and a French poet—in a projectile with the goal of a Moon landing. Five years later, Verne wrote a sequel called ''Around the Moon''. The story is also notable in that Verne attempted to do some rough calculations as to the requirements for the cannon and in that, considering the comparative lack of empirical data on the subject at the time, some of his figures are remarkably accurate. However, his version of a space gun for a non-rocket spacelaunch turned out to be impractical for safe human space travel since a much longer barrel would have been require ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jules Verne
Jules Gabriel Verne (;''Longman Pronunciation Dictionary''. ; 8 February 1828 – 24 March 1905) was a French novelist, poet, and playwright. His collaboration with the publisher Pierre-Jules Hetzel led to the creation of the ''Voyages extraordinaires'', a series of bestselling adventure novels including ''Journey to the Center of the Earth'' (1864), ''Twenty Thousand Leagues Under the Seas'' (1870), and '' Around the World in Eighty Days'' (1872). His novels, always well documented, are generally set in the second half of the 19th century, taking into account the technological advances of the time. In addition to his novels, he wrote numerous plays, short stories, autobiographical accounts, poetry, songs and scientific, artistic and literary studies. His work has been adapted for film and television since the beginning of cinema, as well as for comic books, theater, opera, music and video games. Verne is considered to be an important author in France and most of Europe, where ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Romanian Language
Romanian (obsolete spellings: Rumanian or Roumanian; autonym: ''limba română'' , or ''românește'', ) is the official and main language of Romania and the Moldova, Republic of Moldova. As a minority language it is spoken by stable communities in the countries surrounding Romania (Romanians in Bulgaria, Bulgaria, Romanians in Hungary, Hungary, Romanians of Serbia, Serbia, and Romanians in Ukraine, Ukraine), and by the large Romanian diaspora. In total, it is spoken by 28–29 million people as an First language, L1+Second language, L2, of whom 23–24 millions are native speakers. In Europe, Romanian is rated as a medium level language, occupying the tenth position among thirty-seven Official language, official languages. Romanian is part of the Eastern Romance languages, Eastern Romance sub-branch of Romance languages, a linguistic group that evolved from several dialects of Vulgar Latin which separated from the Italo-Western languages, Western Romance languages in the co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greenwood Press
Greenwood Publishing Group, Inc. (GPG), also known as ABC-Clio/Greenwood (stylized ABC-CLIO/Greenwood), is an educational and academic publisher (middle school through university level) which is today part of ABC-Clio. Established in 1967 as Greenwood Press, Inc. and based in Westport, Connecticut, GPG publishes reference works under its Greenwood Press imprint, and scholarly, professional, and general interest books under its related imprint, Praeger Publishers (). Also part of GPG is Libraries Unlimited, which publishes professional works for librarians and teachers. History 1967–1999 The company was founded as Greenwood Press, Inc. in 1967 by Harold Mason, a librarian and antiquarian bookseller, and Harold Schwartz who had a background in trade publishing. Based in Greenwood, New York, the company initially focused on reprinting out-of-print works, particularly titles listed in the American Library Association's first edition of ''Books for College Libraries'' (1967), unde ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transylvanian Saxons
The Transylvanian Saxons (german: Siebenbürger Sachsen; Transylvanian Saxon: ''Siweberjer Såksen''; ro, Sași ardeleni, sași transilvăneni/transilvani; hu, Erdélyi szászok) are a people of German ethnicity who settled in Transylvania (german: Siebenbürgen) in waves starting from the mid- 12th century until the mid 19th century. The legal foundation of the settlement was laid down in the Diploma Andreanum issued by King Andrew II of Hungary that is known for providing the first territorial autonomy hitherto in the history. The Transylvanian "Saxons" originally came from Flanders, Hainaut, Brabant, Liège, Zeeland, Moselle, Lorraine, and Luxembourg, then situated in the north-western territories of the Holy Roman Empire around the 1140s. After 1918 and the dissolution of Austria-Hungary, in the wake of the Treaty of Trianon, Transylvania united with the Kingdom of Romania. Consequently, the Transylvanian Saxons, together with other ethnic German sub-groups in newly e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hermann Oberth In His Early Years
Hermann or Herrmann may refer to: * Hermann (name), list of people with this name * Arminius, chieftain of the Germanic Cherusci tribe in the 1st century, known as Hermann in the German language * Éditions Hermann, French publisher * Hermann, Missouri, a town on the Missouri River in the United States ** Hermann AVA, Missouri wine region * The German SC1000 bomb of World War II was nicknamed the "Hermann" by the British, in reference to Hermann Göring * Herrmann Hall, the former Hotel Del Monte, at the Naval Postgraduate School, Monterey, California * Memorial Hermann Healthcare System, a large health system in Southeast Texas * The Herrmann Brain Dominance Instrument (HBDI), a system to measure and describe thinking preferences in people * Hermann station (other), stations of the name * Hermann (crater), a small lunar impact crater in the western Oceanus Procellarum * Hermann Huppen, a Belgian comic book artist * Hermann 19, an American sailboat design built by Ted Herman ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aggregat
The Aggregat series (German for "Aggregate") was a set of ballistic missile designs developed in 1933–1945 by a research program of Nazi Germany's Armed Forces (Wehrmacht). Its greatest success was the A4, more commonly known as the V-2. A1 (1933) The A1 was the first rocket design in the Aggregat series. It was designed in 1933 by Wernher von Braun in a German armed forces research program at Kummersdorf headed by Walter Dornberger. The A1 was the grandfather of most modern rockets. The rocket was long, in diameter, and had a takeoff weight of . The engine, designed by Arthur Rudolph, used a pressure-fed rocket propellant system burning ethanol and liquid oxygen, and produced 2.9 kN (660 lbf) of thrust for 16 seconds. The LOX tank was located within the fuel tank and insulated with a fiberglass material. The rocket was stabilized by a 3 axes gyroscope system in the nose, supplied by Kreiselgeräte G.m.b.H. The rocket could not be rotated for stability as with a ba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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