|
Atlas Oryx
The Atlas Oryx (named after the Oryx antelope) is a medium-sized utility helicopter ostensibly developed and manufactured by the Atlas Aircraft Corporation (now Denel Aeronautics) of South Africa. Its largest operator is the South African Air Force (SAAF), having been originally developed to fulfil their needs. Development of the Oryx commenced during the early 1980s, largely in response to the wartime demands of the Border War and the imposition of an arms embargo upon South Africa, which prevented the importing of foreign transport helicopters such as the Aérospatiale SA 330 Puma. Seeking to improve and augment the SAAF's existing fleet of rotorcraft, domestic industries examined means of improving the Puma helicopter. The Oryx is closely connected to the Denel Rooivalk attack helicopter, both rotorcraft being based on the Puma and development having been worked on in parallel around roughly the same time period. Following the conversion of a single Puma to the Oryx configur ... [...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 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'' 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 organizations relevant to the field at issue. For e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United Nations Security Council Resolution 418
United Nations Security Council Resolution 418, adopted unanimously on 4 November 1977, imposed a mandatory arms embargo against South Africa. This resolution differed from the earlier Resolution 282, which was only voluntary. The embargo was subsequently tightened and extended by Resolution 591. The embargo was lifted by Resolution 919 following democratic elections in South Africa in 1994. Impact The embargo had a direct impact on South Africa in a number of ways: * Last-minute cancellation of the sale of s and s by France. * The cancelation of the purchase of s from Israel, some of which had to be built covertly in South Africa instead. * South Africa's inability to purchase modern fighter aircraft to counter Cuban MiG-23s over the SAAF in the South African Border War. * The growth of the modern day multibillion-dollar South African arms industry. * The end of shipments by the United States of enriched uranium fuel for South Africa's SAFARI-1 research nuclear reactor. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mail & Guardian
The ''Mail & Guardian'' is a South African weekly newspaper and website, published by M&G Media in Johannesburg, South Africa. It focuses on political analysis, investigative reporting, Southern African news, local arts, music and popular culture. It is considered a newspaper of record for South Africa. History The publication began as the ''Weekly Mail'', an alternative newspaper by a group of journalists in 1985 after the closure of two leading liberal newspapers, ''The Rand Daily Mail'' and ''Sunday Express''. ''Weekly Mail'' was one of the first newspapers to use Apple Mac desktop publishing. The ''Weekly Mail'' criticised the government and its apartheid policies, which led to the banning of the paper in 1988 by then State President P. W. Botha. The paper was renamed the ''Weekly Mail & Guardian'' from 30 July 1993. The London-based Guardian Media Group (GMG), the publisher of ''The Guardian'', became the majority shareholder of the print edition in 1995, and the name was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eurocopter
Airbus Helicopters SAS (formerly Eurocopter Group) is the helicopter manufacturing division of Airbus. It is the largest in the industry in terms of revenues and turbine helicopter deliveries. Its head office is located at Marseille Provence Airport in Marignane, France, near Marseille. The main facilities of Airbus Helicopters are at its headquarters in Marignane, France, and in Donauwörth, Germany, with additional production plants in Brazil (Helibras), Australia, Spain, Romania, the United Kingdom and the United States. The company was renamed from Eurocopter to Airbus Helicopters on 2 January 2014. In 2018, Airbus delivered 356 helicopters, a 54% share of the civil or parapublic market over five seats. History Airbus Helicopters was formed in 1992 as Eurocopter Group, through the merger of the helicopter divisions of Aérospatiale and DASA. The company's heritage traces back to Blériot and Lioré et Olivier in France and to Messerschmitt and Focke-Wulf in Germany. Airb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beverley Securities Incorporated
Beverley is a market and minster town and a civil parish in the East Riding of Yorkshire, England, of which it is the county town. The town centre is located south-east of York's centre and north-west of City of Hull. The town is known for Beverley Minster, Beverley Westwood, North Bar (a 15th-century gate) and Beverley Racecourse. It inspired the naming of the city of Beverly, Massachusetts, which in turn was the impetus for Beverly Hills, California.Marc Wanamaker, ''Early Beverly Hills'', Mount Pleasant, South Carolina: Arcadia Publishing, 2005, pp. 17–1/ref> The town was listed in the 2018 ''Sunday Times'' report on Best Places to Live in northern England. The town was originally known as ''Inderawuda'' and was founded around 700 AD by Saint John of Beverley during the time of the Anglian kingdom of Northumbria. After a period of Viking control, it passed to the Cerdic dynasty, a period during which it gained prominence in terms of religious importance in Grea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portuguese Air Force
, colours = , colours_label = , march = , mascot = , anniversaries = 1 July , equipment = , equipment_label = , battles = , decorations = , battle_honours = , battle_honours_label = , flying_hours = , website = , commander1 = General Joaquim M. N. Borrego , commander1_label = Chief of Staff of the Air Force , notable_commanders = , identification_symbol = , identification_symbol_label = Roundel , identification_symbol_2 = , identification_symbol_2_label = Fin flash , aircraft_attack = , aircraft_bomber = , aircraft_electronic = , aircraft_fighter = F-16 Fighting Falcon , aircraft_helicopter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eurocopter AS332 Super Puma
The Airbus Helicopters H215 (formerly Eurocopter AS332 Super Puma) is a four-bladed, twin-engine, medium-size utility helicopter developed and initially produced by the French aerospace company Aérospatiale. It has been subsequently manufactured by the successor companies Eurocopter and Airbus Helicopters. The Super Puma is a re-engined and more voluminous version of the original Aérospatiale SA 330 Puma. Development of the Super Puma was carried out during the 1970s, based on the successful SA 330 Puma. While retaining a similar layout, the fuselage was redesigned to increase its damage tolerance and crashworthiness, while composite materials were also more extensively used. Furthermore, a pair of more powerful Turbomeca Makila turboshaft engines were also adopted along with a more streamlined nose, amongst other changes. Two distinct fuselage lengths, a shortened and stretched form, were developed from the onset. On 5 September 1977, the ''SA 331'' pre-production prototyp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transmission (mechanics)
Propulsion transmission is the mode of transmitting and controlling propulsion power of a machine. The term ''transmission'' properly refers to the whole drivetrain, including clutch, gearbox, prop shaft (for rear-wheel drive vehicles), differential, and final drive shafts. In the United States the term is sometimes used in casual speech to refer more specifically to the gearbox alone, and detailed usage differs. The transmission reduces the higher engine speed to the slower wheel speed, increasing torque in the process. Transmissions are also used on pedal bicycles, fixed machines, and where different rotational speeds and torques are adapted. Often, a transmission has multiple gear ratios (or simply "gears") with the ability to switch between them as the speed varies. This switching may be done manually (by the operator) or automatically (by a control unit). Directional (forward and reverse) control may also be provided. Single-ratio transmissions also exist, which simply cha ... [...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 mast i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turboshaft
A turboshaft engine is a form of gas turbine that is optimized to produce shaftpower rather than jet thrust. In concept, turboshaft engines are very similar to turbojets, with additional turbine expansion to extract heat energy from the exhaust and convert it into output shaft power. They are even more similar to turboprops, with only minor differences, and a single engine is often sold in both forms. Turboshaft engines are commonly used in applications that require a sustained high power output, high reliability, small size, and light weight. These include helicopters, auxiliary power units, boats and ships, tanks, hovercraft, and stationary equipment. Overview A turboshaft engine may be made up of two major parts assemblies: the 'gas generator' and the 'power section'. The gas generator consists of the compressor, combustion chambers with ignitors and fuel nozzles, and one or more stages of turbine. The power section consists of additional stages of turbines, a gear reduction ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Denel XTP-1 Beta
The Atlas XTP-1 Beta was an Aérospatiale Puma, Aerospatiale SA.330 Puma converted by Atlas Aircraft Corporation as testbed for testing and evaluation of the Denel Rooivalk, Rooivalk's dynamic systems. Two of these Puma modifications were built, both having stub wings that carried two underwing pylons and one wingtip store. One XTP-1 Beta was seen on display with two rocket/gun pods on the pylons of each wing, underbelly 20mm GA-1 turret, and a data probe on the nose at the starboard side. See also References International Combat Arms, September 1989, "South Africa", "ARMSCOR", P.67 External links Stingray's List of RotorcraftHistory of the AH-2 Rooivalk Atlas Aircraft Corporation aircraft, XTP-1 Beta South African military aircraft 1980s South African helicopters Cold War military equipment of South Africa {{aero-1980s-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atlas XH-1 Alpha
The Atlas XH-1 Alpha is a prototype attack helicopter built by Atlas Aviation (now Denel) of South Africa, which used it as a concept demonstrator for the then-planned Rooivalk project. Development It was developed from an Aérospatiale Alouette III airframe, retaining that helicopter's engine and dynamic components, but replacing the original cockpit with a stepped tandem one, adding a 20 mm cannon under the chin and converting the undercarriage to tail-dragger configuration. The XH-1 first flew on 3 February 1985,''Air International'' June 1986, p. 599. and soon embarked on a rigorous flight test program to examine the feasibility of a dedicated attack helicopter in southern African conditions. The results were ultimately good enough to convince Atlas and the South African Air Force to go ahead with the development of a dedicated attack helicopter, the Denel Rooivalk. The XH-1 and Rooivalk are completely different aircraft and share no components. The Rooivalk was deve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.svg "Click for more on -> Turboshaft")