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Curti Zefhir
The Curti Zefhir is a two-seat light-single turbine-powered recreational or trainer helicopter designed and produced by Italian aircraft manufacturer Curti Aerospace. Development was partly funded by the European Commission. It performed its maiden flight in 2017 and was commercially launched at the April 2018 AERO Friedrichshafen. Curti aim to secure type certification of the Zefhir as an ultralight aircraft. Development Background The Zefhir is developed by Italian aircraft manufacturer Curti Aerospace, a subsidiary of an industrial group active for more than 60 years in the mechanical engineering sector and specialized in industrial automation, packaging machinery and certified aeronautical light alloys parts manufacturing. For over 40 years, Curti has produced subassemblies and components for aerospace and defense companies, including Italian giant Leonardo S.p.A. Curti saw a market opportunity for a better-designed light helicopter powered by a more powerful engine. Devel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Italy
Italy ( it, Italia ), officially the Italian Republic, ) or the Republic of Italy, is a country in Southern Europe. It is located in the middle of the Mediterranean Sea, and its territory largely coincides with the homonymous geographical region. Italy is also considered part of Western Europe, and shares land borders with France, Switzerland, Austria, Slovenia and the enclaved microstates of Vatican City and San Marino. It has a territorial exclave in Switzerland, Campione. Italy covers an area of , with a population of over 60 million. It is the third-most populous member state of the European Union, the sixth-most populous country in Europe, and the tenth-largest country in the continent by land area. Italy's capital and largest city is Rome. Italy was the native place of many civilizations such as the Italic peoples and the Etruscans, while due to its central geographic location in Southern Europe and the Mediterranean, the country has also historically been home ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rotor Blade
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] |
Italian Helicopters
Italian(s) may refer to: * Anything of, from, or related to the people of Italy over the centuries ** Italians, an ethnic group or simply a citizen of the Italian Republic or Italian Kingdom ** Italian language, a Romance language *** Regional Italian, regional variants of the Italian language ** Languages of Italy, languages and dialects spoken in Italy ** Italian culture, cultural features of Italy ** Italian cuisine, traditional foods ** Folklore of Italy, the folklore and urban legends of Italy ** Mythology of Italy, traditional religion and beliefs Other uses * Italian dressing, a vinaigrette-type salad dressing or marinade * Italian or Italian-A, alternative names for the Ping-Pong virus, an extinct computer virus See also * * * Italia (other) * Italic (other) * Italo (other) * The Italian (other) * Italian people (other) Italian people may refer to: * in terms of ethnicity: all ethnic Italians, in and outside of Italy * in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Ultralight Helicopters
Ultralight helicopters are classified as ultralight aircraft by the FAA and as Very Light Rotorcraft (VLR) by the EASA. File:AERO Friedrichshafen 2018, Friedrichshafen (1X7A4701).jpg, Curti Zefhir File:Df334.jpg, DF 334 File:Heli-Sport CH-7 Kompress OK-PHA 48, Gliwice 2017.06.03.jpg, Heli-Sport CH-7 File:MosquitoAviationXEL.jpg, Mosquito XE File:Helicycle N727X Flying.JPG, Eagle Helicycle File:Helicóptero Ultraligero.jpg, Dynali H3 File:Volocopter,IAA 2017, Frankfurt (1Y7A1911).jpg, Volocopter 2X The Volocopter 2X is a German two-seat, optionally-piloted, multirotor electric helicopter. The personal air vehicle was designed and produced by Volocopter GmbH of Bruchsal, and first introduced at the AERO Friedrichshafen airshow in 2017. T ... File:CC-AGF Rotorway Talon A600 (8185310039).jpg, RotorWay Exec File:Safari kit helicopter.jpg, Safari Helicopter File:Revolution Mini-500 (8544410560).jpg, Revolution Mini-500 File:CompositeHelicoptersInternationalKC518Adventourer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 conti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robinson R22
The Robinson R22 is a two-seat, two-bladed, single-engine light utility helicopter manufactured by Robinson Helicopter Company. It was designed in 1973 by Frank D. Robinson, and has been in production since 1979. Development The majority of flight testing was performed at Zamperini Field in Torrance, California. Flight testing and certification was performed in the late 1970s by test pilot Joseph John "Tym" Tymczyszyn and the R22 received FAA certification in March 1979. Due to relatively low acquisition and operating costs, the R22 has been popular as a primary rotorcraft trainer around the world and as a livestock management tool on large ranches in North America and cattle stations in Australia. The R22 has a very low inertia rotor system Greenspun, Philip.2005 Robinson R22 - owner's review" March 2010. Accessed: 20 September 2014. and the control inputs are operated directly by push rods with no hydraulic assistance. Thus its flight controls are very sensitive and require a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Enstrom F-28
The Enstrom F-28 and 280 are a family of small, light piston engine powered helicopters produced by the Enstrom Helicopter Corporation.Apostolo, Giorgio: ''The Illustrated Encyclopedia of Helicopters'', pages 64-65. Bonanza Books, New York, 1984. Design and development Since delivering their first helicopter shortly after Federal Aviation Administration type certification of the F-28 model in April 1965, Enstrom helicopter has produced, , approximately 1,200 aircraft. The company produces three models, the F-28, the more aerodynamic 280 and the turbine-powered 480, each with their own variants. The F-28 and 280 both use Lycoming piston engines, virtually identical to those found in general aviation fixed-wing aircraft. Variants F-28 ;F-28 :Certified April 1965.FAA Type Certificate ;F-28A :Initial production version. Certified May 1968. ;T-28 :Turbine powered. ;F-28B :Turbocharged version. ;F-28C :Fitted with an upgraded engine with turbocharger, and a two piece windscreen. C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cabri G2
The Guimbal Cabri G2 is a two-seat light helicopter produced by Hélicoptères Guimbal, and powered by a reciprocating engine. Designed by Bruno Guimbal, a former Eurocopter engineer, it had its origins in the 1980s, and the first demonstrator flew in 1992. Following the granting of regulatory approval, the Cabri entered commercial service in 2008. In addition to its use within the general aviation sector and as a training rotorcraft, the Cabri G2 has also been used as the basis for unmanned aerial vehicles (UAVs). Development While working at Eurocopter on the Eurocopter AS365 Dauphin and Eurocopter EC120 Colibri helicopters during the 1980s, Bruno Guimbal decided to independently pursue the development of a two-seat reciprocating engine helicopter.Jerram, Mike"Watch out, R22."''Flying Magazine'', December 1991. p. 37.Kenyon 2008, p. 4. This rotorcraft would incorporate numerous safety-related and general technological advances commonly applied to larger turbine-powered rotor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PBS TS100
The PBS TS100 is a small turboshaft engine produced by a Czech turbine engine manufacturer PBS Velká Bíteš. The engine with a maximum power of 241 hp (180 kW) has been developed for light helicopters weighing up to 2,204 lb (1,000 kg). In 2022, the PBS TS100 engine was acquired by the Korean Aerospace Research Institute (KARI) to develop new hybrid propulsion system. Design The PBS TS100 turboshaft engine is equipped with an autonomous oil and fuel system, brushless electric starter generator and a digital ECU. The ECU controls the acceleration and deceleration of the gas generator to maintain a constant output shaft speed. The ECU also provides subsequent automatic cooling of hot components after the engine stops. The turboshaft engine can be controlled by an analogue or digital interface. The maximum continuous power mode of 214 hp (160 kW) is available up to . Variants Two versions of the PBS TS100 engine are available based on the numbe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
FADEC
A full authority digital engine (or electronics) control (FADEC) is a system consisting of a digital computer, called an "electronic engine controller" (EEC) or "engine control unit" (ECU), and its related accessories that control all aspects of aircraft engine performance. FADECs have been produced for both piston engines and jet engines. History The goal of any engine control system is to allow the engine to perform at maximum efficiency for a given condition. Originally, engine control systems consisted of simple mechanical linkages connected physically to the engine. By moving these levers the pilot or the flight engineer could control fuel flow, power output, and many other engine parameters. The mechanical/hydraulic engine control unit for Germany's BMW 801 piston aviation radial engine of World War II was just one notable example of this in its later stages of development. This mechanical engine control was progressively replaced first by analog electronic engine control ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Derating
In electronics, derating (or derating) is the operation of a device at less than its rated maximum capability to prolong its life. Typical examples include operations below the maximum power rating, current rating, or voltage rating. In electronics Power semiconductor devices have a maximum power dissipation rating usually quoted at a case temperature of . The datasheet for the device also includes a ''derating curve'' which indicates how much a device will dissipate without getting damaged at any given case temperature, and this must be taken into account while designing a system. As can be seen from the derating curve image for a hypothetical bipolar junction transistor, the device (rated for 100 W at ) cannot be expected to dissipate anything more than about 40 W if the ambient temperature is such that the temperature at which the device's case will stabilize (after heat-sinking) is . This final case temperature is a function of the thermal resistance between the device's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
