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V-3 Cannon
The V-3 (german: Vergeltungswaffe 3, ("Vengeance Weapon 3") was a German World War II large-caliber gun working on the multi-charge principle whereby secondary propellant charges are fired to add velocity to a projectile. The Germans planned to use the weapon to bombard London from two large bunkers in the Pas-de-Calais region of northern France, but they were rendered unusable by Allied bombing raids before completion. Two similar guns were used to bombard Luxembourg from December 1944 to February 1945. The V-3 was also known as the ''Hochdruckpumpe'' ("High Pressure Pump," HDP for short), which was a code name intended to hide the real purpose of the project. It was also known as ''Fleißiges Lieschen'' ("Busy Lizzie"). (bottom of page) Description The gun used multiple propellant stages placed along the barrel's length in order to provide an additional boost. These were ignited by the hot gases that propelled the projectile as it passed them. Solid-fuel rocket boosters ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zalesie, Kamień County
Zalesie (; german: Laatzig) is a village in the administrative district of Gmina Międzyzdroje, within Kamień County, West Pomeranian Voivodeship, in north-western Poland. It lies approximately south of Międzyzdroje, west of Kamień Pomorski, and north of the regional capital Szczecin. References Villages in Kamień County {{Kamień-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Azel Storrs Lyman
Azel, proper name, may refer to: *'' Azel: Panzer Dragoon RPG'', a 1998 video game *A descendant of Saul (I Chronicles 8:37; I Chronicles 9:43-44) Books of Chronicles *A variant spelling of Azal, a place name referred to in Zechariah 14:5 Book of Zechariah *One of the Four Devas, the Primary Antagonists of God Hand AzEl or Az-El may also refer to: *A type of Antenna Rotator An antenna rotator (or antenna rotor) is a device used to change the orientation, within the horizontal plane, of a directional antenna. Most antenna rotators have two parts, the rotator unit and the controller. The controller is normally placed ... mounting (diminutive for Azimuth/Elevation) * ''Azel'' (album) {{disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Röchling Shell
Röchling shells were bunker-busting artillery shells, developed by German engineer August Cönders during World War II, based on the theory of increasing the sectional density to improve penetration. Description The fin-stabilised shells made from chrome-vanadium steel were able to penetrate much more than of reinforced concrete roof before burying the shell through the floor and into earth. However, these shells had a low muzzle velocity, and thus a high dispersion, on range. As a result, they saw very limited use during World War II; only about 200 shells were ever fired even though 6000 such shells were made for the very large howitzers like the 21 cm mortar. Röchling shells were developed for the 21 cm Mörser 18, a captured French 34 cm railway gun 674(f), and the 35.5 cm Haubitze M1 only. In addition, many experimental HE shells were made for the 37 mm PAK and 50 mm PAK weapons. Use Röchling shells were tested in 1942 and 1943 first against t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
August Coenders
August Cönders was a German engineer working for Röchling'sche Eisen und Stahlwerke GmbH during World War II after having worked in the UK and in Putaux, France, before the war. He designed the Röchling shell that was tested in 1942 and 1943 against the Belgian Fort d'Aubin-Neufchâteau and the V-3 cannon The V-3 (german: Vergeltungswaffe 3, ("Vengeance Weapon 3") was a German World War II large-caliber gun working on the multi-charge principle whereby secondary propellant charges are fired to add velocity to a projectile. The Germans pla .... Very little is known of his life after the V-3 project. References External links August Coenders' 9x19mm Belt-Fed MG {{DEFAULTSORT:Conders, August Engineers from Saarland Weapon designers Possibly living people Year of birth missing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paris
Paris () is the capital and most populous city of France, with an estimated population of 2,165,423 residents in 2019 in an area of more than 105 km² (41 sq mi), making it the 30th most densely populated city in the world in 2020. Since the 17th century, Paris has been one of the world's major centres of finance, diplomacy, commerce, fashion, gastronomy, and science. For its leading role in the arts and sciences, as well as its very early system of street lighting, in the 19th century it became known as "the City of Light". Like London, prior to the Second World War, it was also sometimes called the capital of the world. The City of Paris is the centre of the Île-de-France region, or Paris Region, with an estimated population of 12,262,544 in 2019, or about 19% of the population of France, making the region France's primate city. The Paris Region had a GDP of €739 billion ($743 billion) in 2019, which is the highest in Europe. According to the Economist Intelli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paris Gun
The Paris Gun (german: Paris-Geschütz / Pariser Kanone) was the name given to a type of German long-range siege gun, several of which were used to bombard Paris during World War I. They were in service from March to August 1918. When the guns were first employed, Parisians believed they had been bombed by a high-altitude Zeppelin, as the sound of neither an airplane nor a gun could be heard. They were the largest pieces of artillery used during the war by barrel length, and qualify under the (later) formal definition of large-calibre artillery. Also called the "''Kaiser Wilhelm Geschütz''" (" Kaiser Wilhelm Gun"), they were often confused with Big Bertha, the German howitzer used against Belgian forts in the Battle of Liège in 1914; indeed, the French called them by this name as well.For an instance of war-time naming of this gun as "Big Bertha", see They were also confused with the smaller "Langer Max" (Long Max) cannon, from which they were derived; although the famous Krup ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Exposition Universelle (1878)
The third Paris World's Fair, called an Exposition Universelle in French, was held from 1 May to 10 November 1878. It celebrated the recovery of France after the 1870–71 Franco-Prussian War. Construction The buildings and the fairgrounds were somewhat unfinished on opening day, as political complications had prevented the French government from paying much attention to the exhibition until six months before it was due to open. However, efforts made in April were prodigious, and by 1 June, a month after the formal opening, the exhibition was finally completed. This exposition was on a far larger scale than any previously held anywhere in the world. It covered over , the main building in the Champ de Mars and the hill of Chaillot, occupying . The Gare du Champ de Mars was rebuilt with four tracks to receive rail traffic occasioned by the exposition. The Pont d'Iéna linked the two exhibition sites along the central allée. The French exhibits filled one-half of the entir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Michaux-Perreaux Steam Velocipede
The Michaux-Perreaux steam velocipede was a steam powered velocipede made in France sometime from 1867 to 1871, when a small Louis-Guillaume Perreaux commercial steam engine was attached to a Pierre Michaux manufactured iron framed pedal bicycle. It is one of three motorcycles claimed to be the first motorcycle, along with the Roper steam velocipede of 1867 or 1868, and the internal combustion engine Daimler Reitwagen of 1885. Perreaux continued development of his steam cycle, and exhibited a tricycle version by 1884. The only Michaux-Perreaux steam velocipede made, on loan from the Musée de l'Île-de-France, Sceaux, was the first machine viewers saw upon entering the Solomon R. Guggenheim Museum rotunda in The Art of the Motorcycle exhibition in New York in 1998. First motorcycle? Motoring author L. J. K. Setright commented that, "the simplest way to define a motorcycle is as a bicycle propelled by a heat engine; and if we accept this we must go on to admit that its prototype i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Louis-Guillaume Perreaux
Louis-Guillaume Perreaux (19 February 1816 – 5 April 1889) was a French inventor and engineer who submitted one of the first patents for a working motorcycle in 1869. Early life Perreaux was born in the village of Almenêches, in Normandy, France, on 19 February 1816. After attending elementary school in Almenêches he showed an early interest in engineering, inventing a cane gun (a type of walking stick with a gun concealed inside) at the age of 12. Perreaux was then sent to the Minor Seminary of Sees where he formed the ideas that were later published in his first book in 1877, the two-volume ''Lois de l'univers principe de la création'' (''Laws of the Universe''), which is now in the Bibliothèque Nationale in Paris. He secured a scholarship to the School of Arts and Crafts at Châlons-sur-Marne in 1836. Inventions Perreaux moved to Paris, where he began working on and patenting a range of inventions including a multi-chambered gun, a lock mechanism in 1841, a circular po ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RBL 7 Inch Armstrong Gun
The Armstrong RBL 7-inch gun, also known as the 110-pounder, was an early attempt to use William Armstrong's new and innovative rifled breechloading mechanism for heavy rifled guns. Description The Armstrong "screw" breech mechanism used a heavy block inserted in a vertical slot in the barrel behind the chamber, with a large hollow screw behind it which was manually screwed tight against the block after loading. A metal cup on the front of the block, together with the pressure of the screw behind it, provided "obturation" and sealed the breech to prevent escape of gasses rearward on firing. The sliding-block was known as the "vent-piece", as the vent tube was inserted through it to fire the gun. In modern terms it was a vertical sliding-block. To load the gun, the vent-piece was raised, the shell was inserted through the hollow screw and rammed home into the bore, and the powder cartridge was likewise inserted through the screw into the chamber. The vent-piece was lowered, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Obturation
In the field of firearms and airguns, obturation denotes necessary barrel blockage or fit by a deformed soft projectile (obturation in general is closing up an opening). A bullet or pellet, made of soft material and often with a concave base, will flare under the heat and pressure of firing, filling the bore and engaging the barrel's rifling. The mechanism by which an undersized soft-metal projectile enlarges to fill the barrel is, for hollow-base bullets, expansion from gas pressure within the base cavity and, for solid-base bullets, "upsetting"—the combined shortening and thickening that occurs when a malleable metal object is struck forcibly at one end. For shotgun shells which have multiple pellets much smaller than the barrel bore, obturation is achieved by placing a plastic wad or biodegradable card of the same diameter as the barrel between the propellant powder and the pellets. More importantly, "obturation" refers to the action of a soft metallic cartridge case bein ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Philadelphia
Philadelphia, often called Philly, is the largest city in the Commonwealth of Pennsylvania, the sixth-largest city in the U.S., the second-largest city in both the Northeast megalopolis and Mid-Atlantic regions after New York City. Since 1854, the city has been coextensive with Philadelphia County, the most populous county in Pennsylvania and the urban core of the Delaware Valley, the nation's seventh-largest and one of world's largest metropolitan regions, with 6.245 million residents . The city's population at the 2020 census was 1,603,797, and over 56 million people live within of Philadelphia. Philadelphia was founded in 1682 by William Penn, an English Quaker. The city served as capital of the Pennsylvania Colony during the British colonial era and went on to play a historic and vital role as the central meeting place for the nation's founding fathers whose plans and actions in Philadelphia ultimately inspired the American Revolution and the nation's inde ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
