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Schweizer 300
The Schweizer S300 series (formerly Hughes 300, Schweizer 300, and Sikorsky S-300) family of light utility helicopters was originally produced by Hughes Helicopters, as a development of the Hughes 269. Later manufactured by Schweizer Aircraft, and currently produced by Schweizer RSG, the basic design has been in production for over 50 years. The single, three-bladed main rotor and piston-powered S300 is mostly used as a cost-effective platform for training and agriculture. Development Background In 1955, Hughes Tool Company's Aircraft Division (later Hughes Helicopters) carried out a market survey showing that there was a demand for a low-cost, lightweight, two-seat helicopter. The division began building the Model 269 in September 1955. The prototype flew on 2 October 1956, but it was not until 1960 that the decision was made to develop the helicopter for production. On 9 April 1959, the 269 received certification from the Federal Aviation Administration (FAA) and Hughes con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WikiProject Aircraft
A WikiProject, or Wikiproject, is a Wikimedia movement affinity group for contributors with shared goals. WikiProjects are prevalent within the largest wiki, Wikipedia, and exist to varying degrees within Wikimedia project, sister projects such as Wiktionary, Wikiquote, Wikidata, and Wikisource. They also exist in different languages, and translation of articles is a form of their collaboration. During the COVID-19 pandemic, CBS News noted the role of Wikipedia's WikiProject Medicine in maintaining the accuracy of articles related to the disease. Another WikiProject that has drawn attention is WikiProject Women Scientists, which was profiled by ''Smithsonian Magazine, Smithsonian'' for its efforts to improve coverage of women scientists which the profile noted had "helped increase the number of female scientists on Wikipedia from around 1,600 to over 5,000". On Wikipedia Some Wikipedia WikiProjects are substantial enough to engage in cooperative activities with outside organization ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schweizer 330
The Schweizer 330 and S333 are turbine-powered developments of the Schweizer 300 light piston-powered helicopter. As of 2007, only the Schweizer 333 remains in production. In February 2009, the 333 was rebranded as the Sikorsky S-333. In 2018 the Schweizer R.S.G. bought the Schweizer Aircraft from Sikorsky Aircraft and it was rebranded as Schweizer S333 again. Development Schweizer 330 In 1987, Schweizer announced development of the Schweizer 330 using the dynamic components, rotors, controls and systems of the 300C; however, it was redesigned with an all-new fuselage.Frawley, Gerard: ''The International Directiory of Civil Aircraft, 2003-2004'', page 190. Aerospace Publications Pty Ltd, 2003. The first 330, converted from a 300C and powered by an Allison 250-C10A, flew on June 14, 1988. The FAA certified the aircraft in September 1992. The improved 330SP was introduced in May 1997 and featured an improved rotor and raised skids, which could be retrofitted to previous 330 mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hellenic Army
The Hellenic Army ( el, Ελληνικός Στρατός, Ellinikós Stratós, sometimes abbreviated as ΕΣ), formed in 1828, is the land force of Greece. The term ''Hellenic'' is the endogenous synonym for ''Greek''. The Hellenic Army is the largest of the three branches of the Hellenic Armed Forces, also constituted by the Hellenic Air Force (HAF) and the Hellenic Navy (HN). The army is commanded by the chief of the Hellenic Army General Staff (HAGS), which in turn is under the command of Hellenic National Defence General Staff (HNDGS). The motto of the Hellenic Army is ('Freedom stems from valour'), from Thucydides's '' History of the Peloponnesian War (2.43.4)'', a remembrance of the ancient warriors that defended Greek lands in old times. The Hellenic Army Emblem is the two-headed eagle with a Greek Cross escutcheon in the centre. The Hellenic Army is also the main contributor to, and "lead nation" of, the Balkan Battle Group, a combined-arms rapid-response force ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Air Force Of El Salvador
The Salvadoran Air Force ( es, Fuerza Aérea Salvadoreña, abbreviated FAS) is the air force component of the Armed Forces of El Salvador, and is an independent branch from the army and navy. Early history The Salvadoran Army Air Force ('' es, Fuerza Aérea de El Salvador'', abbreviated FAS) was formed on 20 March 1923 during a period of heavy interest in aviation in El Salvador. In 1947, after signing the treaty of Rio (which was a mutual defense treaty among the states of America including the U.S.), El Salvador gained a new US air mission and the United States increased transfers of aircraft to the nation. Recent operations The Salvadoran Air Force first saw action in the 1969 Football War against Honduras equipped with F4U Corsairs and P-51 Mustangs. From the late 1970s, isolated guerilla actions rapidly developed into a civil war. US aid to El Salvador in 1980 consisted of six UH-1Hs and four in 1981; they were used as gunships. Other deliveries brought that number ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Colombian Air Force
, "We are the Force" , colours = , colours_label = , march = Colombian Air Force Hymn , mascot = Capitan Paz , anniversaries = 8 November , equipment = , equipment_label = , battles = * Colombia–Peru War * Colombian armed conflict , decorations = , battle_honours = , battle_honours_label = , flying_hours = , website = , commander1 = Major General Ramsés Rueda Rueda , commander1_label = Commander of the Air Force , commander2 = Major General Jorge Tadeo Borbon , commander2_label = Deputy Commander and Air Force Chief of Staff , commander3 = Major General Rodrigo Valencia Guevara , commander3_label = Inspector General , nota ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Military Police Of Rio De Janeiro State
The Military Police of Rio de Janeiro State ( pt, Polícia Militar do Estado do Rio de Janeiro) (PMERJ) like other military polices in Brazil is a reserve and ancillary force of the Brazilian Army, and part of the System of Public Security and Brazilian Social Protection. Its members are called "state military" personnel. The primary mission of PMERJ is ostensively preventive policing for the maintenance of public order in the State of Rio de Janeiro. Under the United Nations, in cooperation with the Brazilian Army, the Military Police of Rio de Janeiro State has served in Angola, Mozambique, East-Timor, Sudan, and Haiti. History The first militarized police in Portugal (when Brazil was still a colony) was the '' Royal Police Guard of Lisbon'' ( pt, Guarda Real de Polícia de Lisboa), established in 1801, which followed the model of the National Gendarmerie (french: Gendarmerie Nationale) of France, created in 1791. When the Portuguese Royal Family was transferred to Br ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Argentine Coast Guard
The Argentine Naval Prefecture ( es, Prefectura Naval Argentina or PNA) is a service of Argentina's Security Ministry charged with protecting the country's rivers and maritime territory. It therefore fulfills the functions of other countries' coast guards, and furthermore acts as a gendarmerie force policing navigable rivers. According to the Argentine Constitution, the Armed Forces of the Argentine Republic cannot intervene in internal civil conflicts, so the Prefecture is defined as a civilian "security force of a military nature". It maintains a functional relationship with the Ministry of Defense, as part of both the National Defense System and the Interior Security System. It therefore maintains capabilities arising from the demands required by joint military planning with the armed forces. The PNA is a large organization for a coastguard. With a strength of 45,750 sworn members, the PNA is a larger organization than most national navies, and is in fact slightly larger than ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schweitzer 300CB Interior
Schweitzer is a surname. Notable people with the surname include: * Albert Schweitzer, German theologian, musician, physician, and medical missionary, winner of the 1952 Nobel Peace Prize * Anton Schweitzer, opera composer * Brian Schweitzer, former Democratic Governor of the US state of Montana * Darrell Schweitzer, American writer, editor and essayist * Douglas Schweitzer, Canadian politician * Edmund Schweitzer, electrical engineer, inventor * Edmund O. Schweitzer Jr., founder of E. O. Schweitzer Manufacturing * George K. Schweitzer, academic in chemistry and family history and local history * Georgia Schweitzer, former collegiate and professional basketball player * Jean Baptista von Schweitzer, German politician and poet * Jeff Schweitzer, American non-fiction author, scientist and political commentator * Johann Friedrich Schweitzer, Dutch-German alchemist * Louis Schweitzer (philanthropist), paper manufacturer * Louis Schweitzer (CEO), chairman and former CEO of Renault ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydraulics
Hydraulics (from Greek: Υδραυλική) is a technology and applied science using engineering, chemistry, and other sciences involving the mechanical properties and use of liquids. At a very basic level, hydraulics is the liquid counterpart of pneumatics, which concerns gases. Fluid mechanics provides the theoretical foundation for hydraulics, which focuses on the applied engineering using the properties of fluids. In its fluid power applications, hydraulics is used for the generation, control, and transmission of power by the use of pressurized liquids. Hydraulic topics range through some parts of science and most of engineering modules, and cover concepts such as pipe flow, dam design, fluidics and fluid control circuitry. The principles of hydraulics are in use naturally in the human body within the vascular system and erectile tissue. Free surface hydraulics is the branch of hydraulics dealing with free surface flow, such as occurring in rivers, canals, lak ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tail Rotor
The tail rotor is a smaller rotor mounted vertically or near-vertically at the tail of a traditional single-rotor helicopter, where it rotates to generate a propeller-like horizontal thrust in the same direction as the main rotor's rotation. The tail rotor's position and distance from the helicopter's center of mass allow it to develop enough thrust leverage to counter the reactional torque exerted on the fuselage by the spinning of the main rotor. Without the tail rotor or other anti-torque mechanisms (e.g. NOTAR), the helicopter would be constantly spinning in the opposite direction of the main rotor when flying. Tail rotors are simpler than main rotors since they require only collective changes in pitch to vary thrust. The pitch of the tail rotor blades is adjustable by the pilot via the anti-torque pedals, which also provide directional control by allowing the pilot to rotate the helicopter around its vertical axis. Its drive system consists of a shaft powered from th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Helicopter Rotor
A helicopter main rotor or rotor system is the combination of several rotary wings (rotor blades) with a control system, that generates the aerodynamic lift force that supports the weight of the helicopter, and the thrust that counteracts aerodynamic drag in forward flight. Each main rotor is mounted on a vertical mast over the top of the helicopter, as opposed to a helicopter tail rotor, which connects through a combination of drive shaft(s) and gearboxes along the tail boom. The blade pitch is typically controlled by the pilot using the helicopter flight controls. Helicopters are one example of rotary-wing aircraft (rotorcraft). The name is derived from the Greek words ''helix'', helik-, meaning spiral; and ''pteron'' meaning wing. Design principles Overview The helicopter rotor is powered by the engine, through the transmission, to the rotating mast. The mast is a cylindrical metal shaft that extends upward from—and is driven by—the transmission. At the top of the m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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