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Ramjet
A ramjet is a form of airbreathing jet engine that requires forward motion of the engine to provide air for combustion. Ramjets work most efficiently at supersonic speeds around and can operate up to . Ramjets can be particularly appropriate in uses requiring a compact mechanism for high-speed, such as missiles. Weapons designers are investigating ramjet technology for use in artillery shells to increase range; a 120 mm ramjet-assisted mortar shell is thought to be able to travel . They have been used, though not efficiently, as tip jets on the ends of helicopter rotors. History France Cyrano de Bergerac ''L'Autre Monde: ou les États et Empires de la Lune ( Comical History of the States and Empires of the Moon)'' (1657) was the first of three satirical novels written by Cyrano de Bergerac that are considered among the first science fiction stories. Arthur C Clarke credited this book with conceiving the ramjet, and as the first fictional example of rocket-powered ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Airbreathing Jet Engine
An airbreathing jet engine (or ducted jet engine) is a jet engine in which the exhaust gas which supplies jet propulsion is atmospheric air, which is taken in, compressed, heated, and expanded back to atmospheric pressure through a propelling nozzle. Compression may be provided by a gas turbine, as in the original turbojet and newer turbofan, or arise solely from the ram pressure of the vehicle's velocity, as with the ramjet and pulsejet. All practical airbreathing jet engines heat the air by burning fuel. Alternatively a heat exchanger may be used, as in a nuclear-powered aircraft, nuclear-powered jet engine. Most modern jet engines are turbofans, which are more fuel efficient than turbojets because the thrust supplied by the gas turbine is augmented by Bypass ratio, bypass air passing through a ducted fan. Background The original air-breathing gas turbine jet engine was the turbojet. It was a concept brought to life by two engineers, Frank Whittle in England UK and Hans von Oh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nord 1500 Griffon
The Nord 1500 Griffon is an Experimental Aircraft, experimental ramjet-powered interceptor aircraft designed and built by France, French state-owned aircraft manufacturer Nord Aviation. The Griffon was developed to become a Mach number, Mach 2 follow on to the supersonic Nord Gerfaut research aircraft. Development of the aircraft began in earnest after the receipt of a letter of intent in 1953 for a pair of unarmed research aircraft. The design featured an innovative dual propulsion turbojet-ramjet configuration; the former being used to takeoff and attain sufficient speed to start the latter. The first prototype, named Griffon I, made its maiden flight in 1955 and eventually reached a speed of Mach 1.3. Because it lacked the ramjet engine, it was mostly used for exploring the aircraft's aerodynamic properties and its systems. Its flight testing was terminated shortly after the ramjet-equipped Griffon II made its first flight two years later. This aircraft attained a maximum spee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
René Lorin
René Lorin (24 March 1877 – 16 January 1933) was a French aerospace engineer and inventor of the ramjet. In 1908 Lorin patented, FR390256, the first subsonic ramjet design. He published the principles of a ramjet in articles in the journal ''L'Aérophile'' from 1908 to 1913, expressing the idea that the exhaust from internal combustion engines could be directed into nozzles to create jet propulsion. He could not test this invention since there was no way at the time for an aircraft to go fast enough for a ramjet to function properly. When René Leduc applied for a patent on a ramjet design in 1933, FR705648, he discovered Lorin's publications and tried to contact him, only to learn that he had recently died. Leduc thereafter paid homage to Lorin's work. René Lorin is a graduate of the École Centrale Paris École or Ecole may refer to: * an elementary school in the French educational stages normally followed by Secondary education in France, secondary education establishm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
René Leduc
René Henri Leduc (; April 24, 1898 – March 9, 1968) was a French engineer and aircraft manufacturer, renowned for his pioneering work in ramjet propulsion. Leduc's groundbreaking designs, including the Leduc 010, 016, 021, and 022, were instrumental in advancing supersonic aviation technology. After cancellation of French Aviation Ministry's contracts for the Leduc ramjet aircraft projects, in 1958 Leduc's company converted from aeronautics to hydraulics, becoming known as Hydro Leduc and eventually focusing on production of hydraulic pumps for excavators. Early life René Henri Leduc was born on April 24, 1898, in Saint-Germain-lès-Corbeil, Essonne, France. Leduc's early education ended at 14 when he began working as an apprentice mechanic and later as a clerk in a foundry. During World War I, he joined the artillery, fought on the front lines, and graduated as a top-ranking officer from the Fontainebleau cadet training school. After the war, Leduc pursued an engineerin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tip Jet
A tip jet is a jet nozzle at the tip of some helicopter rotor blades, used to spin the rotor, much like a Catherine wheel firework. Tip jets replace the normal shaft drive and have the advantage of placing no torque on the airframe, thus not requiring the presence of a tail rotor. Some simple monocopters are composed of nothing but a single blade with a tip rocket. Tip jets can use compressed air, provided by a separate engine, to create jet thrust. Other types use a system that functions similarly to the afterburner (reheat) on a conventional jet engine, except that instead of reheating a gas jet, they serve as the primary heater, creating greater thrust than the flow of pre-compressed air alone; the best description of this is ''thrust augmentation''. Other designs includes ramjets or even a complete turbojet engine. Some, known as ''rocket-on-rotor'' systems, involve placing rockets on the tips of the rotor blades that are fueled from a tank. If the helicopter's engine fail ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Missile
A missile is an airborne ranged weapon capable of self-propelled flight aided usually by a propellant, jet engine or rocket motor. Historically, 'missile' referred to any projectile that is thrown, shot or propelled towards a target; this usage is still recognized today with any unguided jet- or rocket-propelled weapons generally described as rocket artillery. Airborne explosive devices without propulsion are referred to as shells if fired by an artillery piece and bombs if dropped by an aircraft. Missiles are also generally guided towards specific targets termed as guided missiles or guided rockets. Missile systems usually have five system components: targeting, guidance system, flight system, engine, and warhead. Missiles are primarily classified into different types based on firing source and target such as surface-to-surface, air-to-surface, surface-to-air and air-to-air missiles. Terminology Missile is derived from Latin "missilis" meaning "that may be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Albert Fonó
Albert Fonó (born 2 July 1881 in Budapest, d. 21 November 1972 in Budapest), a Hungarian mechanical engineer who was one of the early pioneers of turbojet and ramjet propulsion and was first to patent a ramjet engine and a turbojet engine in 1928 (granted in 1932). Fonó graduated from the József Technical University in Budapest in 1903 and travelled widely, gaining experience working for German, Belgian, French and Swiss manufacturers, before attaining his Ph.D. His main specialty was energetics. He had 46 patents in 20 topics of research, including a steam boiler and an air compressor for mines. In 1915 he devised a solution for increasing the range of artillery, comprising a gun-launched projectile combined with a ramjet propulsion unit. This was to make it possible to obtain a long range with low initial muzzle velocities, allowing heavy shells to be fired from relatively lightweight guns. Fonó submitted his invention to the Austro-Hungarian Army but the proposal was rej ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Artillery
Artillery consists of ranged weapons that launch Ammunition, munitions far beyond the range and power of infantry firearms. Early artillery development focused on the ability to breach defensive walls and fortifications during sieges, and led to heavy, fairly immobile siege engines. As technology improved, lighter, more mobile field artillery cannons were developed for battlefield use. This development continues today; modern self-propelled artillery vehicles are highly mobile weapons of great versatility generally providing the largest share of an army's total firepower. Originally, the word "artillery" referred to any group of soldiers primarily armed with some form of manufactured weapon or armour. Since the introduction of gunpowder and cannon, "artillery" has largely meant cannon, and in contemporary usage, usually refers to Shell (projectile), shell-firing Field gun, guns, howitzers, and Mortar (weapon), mortars (collectively called ''barrel artillery'', ''cannon artil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leduc 0
Leduc may refer to: People * Albert Leduc (1902–1990), Canadian ice hockey player * Alexandre Leduc (born 1984), Canadian politician * Amand Leduc (1764–1832), French Navy officer * Amanda Leduc, Canadian writer * Audrey Leduc (born 1999), Canadian sprinter * Jos LeDuc (1944–1999), Canadian professional wrestler * Kyle LeDuc (1981–2023), American racing driver * Noella Leduc (1933–2014), All-American Girls Professional Baseball League player * Ozias Leduc (1864–1955), Canadian painter * Renato Leduc (1897–1986), Mexican poet and journalist * René Leduc (1898–1968), the designer of the world's first ramjet-powered aircraft * Richard Leduc (born 1941), French actor * Simon Le Duc or Leduc (1742–1777), French violinist and composer * Stéphane Leduc (1853–1939), French biologist * Timothy LeDuc (born 1990), American pairskater * Violette Leduc (1907–1972), French author * Dave Leduc (born 1991), Canadian professional fighter * William Gates LeDuc (1823–1917), A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Comical History Of The States And Empires Of The Moon
''The Other World: Comical History of the States and Empires of the Moon'' () was the first of three satirical novels written by Cyrano de Bergerac. It was published posthumously in 1657 and, along with its companion work '' The States and Empires of the Sun'', is considered one of the earliest published science fiction stories. Arthur C. Clarke credited the book with the first description of rocket-powered spaceflight, and with the invention of the ramjet. Plot summary The book is narrated in the first person by a character also named Cyrano. Cyrano attempts to reach the Moon to prove there is a civilization that sees the Earth as its own moon. He launches himself into the sky from Paris by strapping bottles of dew to his body, but lands back on Earth. Believing he had traveled straight up and down, he is confused by local soldiers who tell him he is not in France; they escort him to the provincial governor who informs him that it is in fact New France. The narrator explains t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leduc 010 Ramjet Prototype (11729010226)
Leduc may refer to: People * Albert Leduc (1902–1990), Canadian ice hockey player * Alexandre Leduc (born 1984), Canadian politician * Amand Leduc (1764–1832), French Navy officer * Amanda Leduc, Canadian writer * Audrey Leduc (born 1999), Canadian sprinter * Jos LeDuc (1944–1999), Canadian professional wrestler * Kyle LeDuc (1981–2023), American racing driver * Noella Leduc (1933–2014), All-American Girls Professional Baseball League player * Ozias Leduc (1864–1955), Canadian painter * Renato Leduc (1897–1986), Mexican poet and journalist * René Leduc (1898–1968), the designer of the world's first ramjet-powered aircraft * Richard Leduc (born 1941), French actor * Simon Le Duc or Leduc (1742–1777), French violinist and composer * Stéphane Leduc (1853–1939), French biologist * Timothy LeDuc (born 1990), American pairskater * Violette Leduc (1907–1972), French author * Dave Leduc (born 1991), Canadian professional fighter * William Gates LeDuc (1823 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
