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Cora (rocket)
Cora was a single-stage French experimental rocket. It was the largest rocket ever launched in Western Europe. It was primarily used for component testing in support of the multinational Europa (rocket), Europa Rocket, which was developed and produced by the European Launcher Development Organisation, the predecessor to the present day European Space Agency. The first stage of the Cora was 5.5 metres long and had a diameter of 2 metres; when fully fuelled, it weighed 9.85 tonnes; the propellant was a mixture of nitrogen tetroxide and unsymmetrical dimethylhydrazine (UDMH). The entire rocket had a length of 11.5 metres and a takeoff weight of 16.5 tonnes. It was powered by a three-nozzle engine that produced 220 Newton (unit), KN of thrust and had a specific impulse (in vacuum) of 280 seconds. A cylindrical black ring supporting four fins was attached to the rocket's base. On 27 November 1966, the first launch of the Cora rocket was conducted at the CIEES missile range and launc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cora Rocket
Cora may refer to: Science * Cora (fungus), ''Cora'' (fungus), a genus of lichens * Cora (damselfly), ''Cora'' (damselfly), a genus of damselflies * CorA metal ion transporter, a Mg2+ influx system People * Cora (name), a given name and surname * Cora E. (born 1968), German hip-hop artist * Sexy Cora or Carolin Ebert (1987–2011), German actress, model, singer Places United States * Cora, Illinois * Cora, Kansas * Cora, Missouri * Cora, West Virginia * Cora, Washington * Cora, Wyoming Other places * Cora (Ancient Latin town), an ancient town in Latium (Italy) * Cori, Lazio, Italy Other uses * 504 Cora, a metallic asteroid from the middle region of the asteroid belt * Cora (hypermarket), a retail group of hypermarkets in Europe * Cora (instrument), an alternative spelling of the West African musical instrument Kora * Cora (opera), ''Cora'' (opera), a 1791 opera by Étienne Méhul, libretto by Valadier * Cora (restaurant), a Canadian chain of casual restaurants * Cora (rocket), a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unsymmetrical Dimethylhydrazine
Unsymmetrical dimethylhydrazine (UDMH; 1,1-dimethylhydrazine, НДМГ or codenamed Geptil) is a chemical compound with the formula H2NN(CH3)2 that is used as a rocket propellant. It is a colorless liquid, with a sharp, fishy, ammonia-like smell typical for organic amines. Samples turn yellowish on exposure to air and absorb oxygen and carbon dioxide. It is miscible with water, ethanol, and kerosene. In concentration between 2.5% and 95% in air, its vapors are flammable. It is not sensitive to shock. Symmetrical dimethylhydrazine, 1,2-dimethylhydrazine is also known but is not as useful. Production UDMH is produced industrially by two routes. Based on the Olin Raschig process, one method involves reaction of monochloramine with dimethylamine giving 1,1-dimethylhydrazinium chloride: :(CH3)2NH + NH2Cl → (CH3)2NNH2 ⋅ HCl In the presence of suitable catalysts, acetylhydrazine can be N-dimethylated using formaldehyde and hydrogen to give the N,N-dimethyl-N'-acetylhydrazine, w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nouvelle-Aquitaine
Nouvelle-Aquitaine (; oc, Nòva Aquitània or ; eu, Akitania Berria; Poitevin-Saintongeais: ''Novéle-Aguiéne'') is the largest administrative region in France, spanning the west and southwest of the mainland. The region was created by the territorial reform of French regions in 2014 through the merger of three regions: Aquitaine, Limousin and Poitou-Charentes. It covers – or of the country – and has 5,956,978 inhabitants (municipal population on 1 January 2017). The new region was established on 1 January 2016, following the regional elections in December 2015. It is the largest region in France by area (including overseas regions such as French Guiana), with a territory slightly larger than that of Austria. Its prefecture and largest city, Bordeaux, together with its suburbs and satellite cities, forms the seventh-largest metropolitan area of France, with 850,000 inhabitants. The region has 25 major urban areas, among which the most important after Bordeaux are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biscarrosse
Biscarrosse (; oc, Biscarròssa) is a commune in the Landes department in Nouvelle-Aquitaine in southwestern France. It is located southwest of Bordeaux, and inland from the seaside resort of Biscarrosse-Plage on the Atlantic coast. Near Biscarrosse is the CEL (national test centre) from which numerous French military rockets have been launched for test purposes. Likewise, the CEL has facilities for launching civilian rockets to study the upper atmosphere. Near the town centre, outside the ''Café de l'orme'', there was what is believed to have been the oldest elm tree in Europe. Planted in 1350, this Field Elm ''Ulmus minor'' died in 2010 after finally succumbing to Dutch elm disease. Legend has it that girls deemed promiscuous were forced to stand naked upon a barrel beneath the tree for a day. One unfortunate, unjustly accused, died of shame, the tree annually producing a corona of blanched leaves in her memory. The commune has an airport, called Biscarrosse - Parentis A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
French Algeria
French Algeria (french: Alger to 1839, then afterwards; unofficially , ar, الجزائر المستعمرة), also known as Colonial Algeria, was the period of French colonisation of Algeria. French rule in the region began in 1830 with the invasion of Algiers and lasted until the end of the Algerian War of Independence in 1962. While the administration of Algeria changed significantly over the 132 years of French rule, the Mediterranean coastal region of Algeria, housing the vast majority of its population, was an integral part of France from 1848 until its independence. As one of France's longest-held overseas territories, Algeria became a destination for hundreds of thousands of European immigrants known as ''colons'', and later as . However, the indigenous Muslim population remained the majority of the territory's population throughout its history. Many estimates indicates that the native Algerian population fell by one-third in the years between the French invasion a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hammaguir
Hammaguir (also written Hamaguir and Hammaguira) ( ar, حماقير) is a village in Abadla District, Béchar Province, Algeria, south-west of Béchar. It lies on the N50 national highway between Béchar and Tindouf. The location is notable for its role in French rocketry. Hamaguir Airport is located there. Role in French rocketry and spaceflight Between 1947 and 1967 there was a rocket launch site, the Interarmy Special Vehicles Test Centre (abbreviated CIEES in French), near Hammaguir, used by France for launching sounding rockets and the satellite carrier ''"Diamant"'' between 1965 and 1967. The Diamant launch pad at Hammaguir is located a30° 46′ 41″ N, 3° 3′ 14″ W The CIEES facility was also used for testing surface-to-air and air-to-air missiles. The first French satellite Astérix was launched from there in 1965. In honor of its role in the early development of French spaceflight, its name was given to a Martian crater in 1979 and to an asteroid cr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Specific Impulse
Specific impulse (usually abbreviated ) is a measure of how efficiently a reaction mass engine (a rocket using propellant or a jet engine using fuel) creates thrust. For engines whose reaction mass is only the fuel they carry, specific impulse is exactly proportional to the effective exhaust gas velocity. A propulsion system with a higher specific impulse uses the mass of the propellant more efficiently. In the case of a rocket, this means less propellant needed for a given delta-v, so that the vehicle attached to the engine can more efficiently gain altitude and velocity. In an atmospheric context, specific impulse can include the contribution to impulse provided by the mass of external air that is accelerated by the engine in some way, such as by an internal turbofan or heating by fuel combustion participation then thrust expansion or by external propeller. Jet engines breathe external air for both combustion and by-pass, and therefore have a much higher specific impulse than ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Newton (unit)
The newton (symbol: N) is the unit of force in the International System of Units (SI). It is defined as 1 kg⋅m/s, the force which gives a mass of 1 kilogram an acceleration of 1 metre per second per second. It is named after Isaac Newton in recognition of his work on classical mechanics, specifically Newton's second law of motion. Definition A newton is defined as 1 kg⋅m/s (it is a derived unit which is defined in terms of the SI base units). One newton is therefore the force needed to accelerate one kilogram of mass at the rate of one metre per second squared in the direction of the applied force. The units "metre per second squared" can be understood as measuring a rate of change in velocity per unit of time, i.e. an increase in velocity by 1 metre per second every second. In 1946, Conférence Générale des Poids et Mesures (CGPM) Resolution 2 standardized the unit of force in the MKS system of units to be the amount needed to accelerate 1 kilogram of mass at the rate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nitrogen Tetroxide
Dinitrogen tetroxide, commonly referred to as nitrogen tetroxide (NTO), and occasionally (usually among ex-USSR/Russia rocket engineers) as amyl, is the chemical compound N2O4. It is a useful reagent in chemical synthesis. It forms an equilibrium mixture with nitrogen dioxide. Its molar mass is 92.011 g/mol. Dinitrogen tetroxide is a powerful oxidizer that is hypergolic (spontaneously reacts) upon contact with various forms of hydrazine, which has made the pair a common bipropellant for rockets. Structure and properties Dinitrogen tetroxide could be regarded as two nitro groups (-NO2) bonded together. It forms an equilibrium mixture with nitrogen dioxide. The molecule is planar with an N-N bond distance of 1.78Å and N-O distances of 1.19Å. The N-N distance corresponds to a weak bond, since it is significantly longer than the average N-N single bond length of 1.45Å. This exceptionally weak σ bond (amounting to overlapping of the ''sp''2 hybrid orbitals of the two NO2 units) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
European Space Agency
, owners = , headquarters = Paris, Île-de-France, France , coordinates = , spaceport = Guiana Space Centre , seal = File:ESA emblem seal.png , seal_size = 130px , image = Views in the Main Control Room (12052189474).jpg , size = , caption = , acronym = , established = , employees = 2,200 , administrator = Director General Josef Aschbacher , budget = €7.2 billion (2022) , language = English and French (working languages) , website = , logo = European Space Agency logo.svg , logo_caption = Logo , image_caption = European Space Operations Centre (ESOC) Main Control Room The European Space Agency (ESA; french: Agence spatiale européenne , it, Agenzia Spaziale Europea, es, Agencia Espacial Europea ASE; german: Europäische Weltraumorganisation) is an intergovernmental organisation of 22 member states dedicated to the exploration of space. Established in 1975 and headquartered i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
