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Misnay–Schardin Effect
The Misnay–Schardin effect, or platter effect, is a characteristic of the detonation of a broad sheet of explosive. Description Explosive blasts expand directly away from, and perpendicular to, the surface of an explosive. Unlike the blast from a rounded explosive charge, which expands in all directions, the blast produced by an explosive sheet expands primarily perpendicular to its plane, in both directions. However, if one side is backed by a heavy or fixed mass, most of the blast (i.e. most of the rapidly expanding gas and its kinetic energy) will be reflected in the direction away from the mass. Uses The Misnay–Schardin effect was studied and experimented with by explosive experts József Misnay (sometimes spelled Misznay incorrectly), a Hungary, Hungarian, and Hubert Schardin, a Germany, German, who initially sought to develop a more effective antitank mine for Nazi Germany. Some sources claim that World War II ended before their design became usable, but they and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bundesarchiv Bild 101I-680-8282A-12A, Budapest, SS-Männer Auf Der Burg
The German Federal Archives or Bundesarchiv (BArch) (, lit. "Federal Archive") are the national archives of Germany. They were established at the current location in Koblenz in 1952. They are subordinated to the Federal Commissioner for Culture and the Media (Claudia Roth since 2021) under the German Chancellery, and before 1998, to the Federal Ministry of the Interior. On 6 December 2008, the Archives donated 100,000 photos to the public, by making them accessible via Wikimedia Commons. History The federal archive for institutions and authorities in Germany, the first precursor to the present-day Federal Archives, was established in Potsdam, Brandenburg in 1919, a later date than in other European countries. This national archive documented German government dating from the founding of the North German Confederation in 1867. It also included material from the older German Confederation and the Imperial Chamber Court. The oldest documents in this collection dated back to the y ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Munroe Effect
A shaped charge, commonly also hollow charge if shaped with a cavity, is an explosive charge shaped to focus the effect of the explosive's energy. Different types of shaped charges are used for various purposes such as cutting and forming metal, initiating nuclear weapons, penetrating armor, or perforating wells in the oil and gas industry. A typical modern shaped charge, with a metal liner on the charge cavity, can penetrate armor steel to a depth of seven or more times the diameter of the charge (charge diameters, CD), though depths of 10 CD and above have been achieved. Contrary to a misconception, possibly resulting from the acronym ''HEAT'' ( high-explosive anti-tank), the shaped charge does not depend in any way on heating or melting for its effectiveness; that is, the jet from a shaped charge does not melt its way through armor, as its effect is purely kinetic in nature—however the process creates significant heat and often has a significant secondary incendiary ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Explosively Formed Penetrator
An explosively formed penetrator (EFP), also known as an explosively formed projectile, a self-forging warhead, or a self-forging fragment, is a special type of shaped charge designed to penetrate armor effectively, from a much greater standoff range than standard shaped charges, which are more limited by standoff distance. As the name suggests, the effect of the explosive charge is to deform a metal plate into a slug or rod shape and accelerate it toward a target. They were first developed as oil well perforators by American oil companies in the 1930s, and were deployed as weapons in World War II. Difference from conventional shaped charges A conventional shaped charge generally has a conical metal liner that is forced by an explosive blast into a hypervelocity jet of superplastic metal able to penetrate thick armor and knock out vehicles. A disadvantage of this arrangement is that the jet of metal loses effectiveness the further it travels, as it breaks up into disconne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
High-explosive Squash Head
A high-explosive squash head (HESH), in British terminology, or a high-explosive plastic/plasticized (HEP), in American terminology, is a type of explosive projectile with plastic explosive that conforms to the surface of a target before detonating, which improves the transfer of explosive energy to the target. Squash head projectiles are similar to high-explosive projectiles and are well suited to many of the same targets. However, while HESH projectiles are not armour-piercing, they can defeat armored targets by causing spall, which can injure or kill a vehicle's occupants or detonate some types of ammunition. Design Function HESH rounds are thin metal shells filled with plastic explosive and a delayed-action fuze at the base of the shell. On impact, the inert material, followed by plastic explosive, is 'squashed' against the surface of the target and spreads out to form a disc or 'pat' of explosive. The inert material helps prevent premature detonation of the plastic exp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
M18 Claymore Mine
M18 or M-18 may refer to: Aircraft * Messerschmitt M 18, an early German airliner * Miles M.18, a Miles aircraft * Mooney M-18 Mite, a low-wing monoplane * PZL-Mielec M-18 Dromader, an agricultural and aerial-firefighting aircraft Firearms and military equipment * M18 Claymore mine, an American anti-personnel landmine * M18 Hellcat, an American tank destroyer used in World War II * M18 smoke grenade, a colored smoke grenade * M18 recoilless rifle, a late-World War II recoilless rifle * SIG Sauer M18 pistol, a compact, carry sized SIG Sauer P320 used by the United States armed forces Roads and highways *M18 motorway (Great Britain) *M18 motorway (Ireland) *M-18 (Michigan highway) * M18 (East London), a Metropolitan Route in East London, South Africa * M18 (Cape Town), a Metropolitan Route in Cape Town, South Africa * M18 (Johannesburg), a Metropolitan Route in Johannesburg, South Africa * M18 (Pretoria), a Metropolitan Route in Pretoria, South Africa * M18 (Port Elizabeth), a Metro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AT2 Mine
The AT2 mine is a scatterable anti-tank mine developed by Dynamit Nobel. It can be scattered from artillery rockets or from mine laying systems, and is in service with the British, German and Norwegian armed forces. AT2 mines were donated to Ukraine by Germany. Description The mine is cylindrical with a hemispherical top and flat bottom. A thin aerial-like wire extends from the top of the mine, and is the S3 "scratch wire" contact fuze. Five or more metal legs (depending on the exact model) around the base of the mine fold out to stand the mine upright. Additionally the mine is fitted with a small plastic parachute when it is deployed from rockets to reduce the impact when the mine lands. The mine is triggered when the scratch wire fuze drags along the bottom of a vehicle or when it is crushed by pressure. Additionally the mine has a magnetic-influence fuze. The mine uses a Misznay-Schardin effect warhead to penetrate the belly of armour vehicles; the projectile formed is optim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ragnar Benson
Ragnar Benson is the pen name of a prolific Survivalism, survivalist author who specializes in preparedness topics, particularly Retreat (survivalism), survival retreats, hunting, animal trapping, trapping, austere medicine, false identification, explosives, firearms, and Improvised weapon, improvised weapons. Writing career Many of his 46 books were published by Loompanics, Loompanics Unlimited (which went out of business in 2004) and by Paladin Press (which also went out of business in 2018). Both Benson and Paladin Press are controversial, because actually formulating or constructing many of the explosives and weapons that he describes would be illegal in most jurisdictions. Some of his books have been banned ("challenged") from importation into Canada, by the Customs Canada censors at the Connaught Building. In the aftermath of the 1995 Oklahoma City Bombing, Timothy McVeigh was found to have been in possession of Benson's ''Homemade C-4: A Recipe For Survival'' and ''Ragnar's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War II
World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the world's countries participated, with many nations mobilising all resources in pursuit of total war. Tanks in World War II, Tanks and Air warfare of World War II, aircraft played major roles, enabling the strategic bombing of cities and delivery of the Atomic bombings of Hiroshima and Nagasaki, first and only nuclear weapons ever used in war. World War II is the List of wars by death toll, deadliest conflict in history, causing World War II casualties, the death of 70 to 85 million people, more than half of whom were civilians. Millions died in genocides, including the Holocaust, and by massacres, starvation, and disease. After the Allied victory, Allied-occupied Germany, Germany, Allied-occupied Austria, Austria, Occupation of Japan, Japan, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nazi Germany
Nazi Germany, officially known as the German Reich and later the Greater German Reich, was the German Reich, German state between 1933 and 1945, when Adolf Hitler and the Nazi Party controlled the country, transforming it into a Totalitarianism, totalitarian dictatorship. The Third Reich, meaning "Third Realm" or "Third Empire", referred to the Nazi claim that Nazi Germany was the successor to the earlier Holy Roman Empire (800–1806) and German Empire (1871–1918). The Third Reich, which the Nazis referred to as the Thousand-Year Reich, ended in May 1945, after 12 years, when the Allies of World War II, Allies defeated Germany and entered the capital, Berlin, End of World War II in Europe, ending World War II in Europe. After Hitler was appointed Chancellor of Germany in 1933, the Nazi Party began to eliminate political opposition and consolidate power. A 1934 German referendum confirmed Hitler as sole ''Führer'' (leader). Power was centralised in Hitler's person, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
