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GE H75
The General Electric H-Series is a family of turboprop aircraft engines produced by GE BGA Turboprops. The initial H80 is an updated derivative of the Walter M601, while the H75 and H85 are later derivatives. Development The H80 was launched in 2009 based on the M601. GE added a new compressor, blisks, blades and new stators to enhance power by 3% and boost efficiency by 10%. It reaches ( shaft horsepower) from the M601-F's , and improves hot and high performance. The H80 was certificated by EASA at 13 December 2011, followed by the FAA at 13 March 2012. Its Russian type certificate was received in October 2012, and the engine also approved by Brazilian Civil Aviation agency (ANAC) and the Argentine Administración Nacional de Aviación Civil. Its Electronic Engine and Propeller Control (EEPC) system received EASA type certification in late 2016. The Diamond Dart 550 military trainer is due to fly it in early 2018 and it will be certified on the Thrush 510G crop duster ... [...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] |
Diamond Dart 550
The Diamond DART is a series of tandem, two-seat civilian and military turboprop trainers manufactured by Austrian Diamond Aircraft, "DART" meaning ''Diamond Aircraft Reconnaissance Trainer''. Development The DART-450 made its first flight on 17 May 2016. Certification of the $3.1 million plane was expected by the end of 2017. The first two deliveries were to be for a non-certificated kit version in 2017, while a certificated aircraft was expected to be delivered in September 2018. Diamond intends to deliver 50 aircraft per year. The third prototype was expected to fly in late 2017, powered by a 550hp (410kW) GE Aviation engine. Design The DART-450 is built predominately from carbon fibre. It is powered by a Ivchenko-Progress Motor Sich AI-450S turboprop engine, driving a five-bladed MT Propeller. The cockpit accommodates two crew on ejection seats. The avionics are provided by Garmin and the fuselage is able to mount an optional retractable surveillance camera, plus other ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paris Air Show 2017 Lasa Thrush 510G Left Front (cropped)
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 Intellige ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nextant G90XT
Nextant Aerospace is a United States-based company specializing in the remanufacturing of business jets.The Economist, “Business Jets for an Austere Age,” October 5, 201 Founded in 2007, Nextant is the first company to introduce the concept of aircraft remanufacturing to the business jet market. Nextant 400XT The company's first product is the Nextant 400XT, a modified and modernized Beechjet 400A/XP that sells for approximately one-half the price of competing models with comparable features and specifications. The 400XT is equipped with 3,050-pound-thrust Williams FJ44-3AP Full Authority Digital Engine Controls (FADEC) turbofan engines and a Rockwell Collins Pro Line 21™ integrated avionics suite. It also has multiple aerodynamic and airframe enhancements including a streamlined, conically lofted engine cowling along with a newly designed engine beam and mounting system that is significantly stronger when c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Time Between Overhaul
Time between overhauls (abbreviated as TBO or TBOH) is the manufacturer's recommended number of running hours or calendar time before an aircraft engine or other component requires overhaul. On rotorcraft, many components have recommended or mandatory TBOs, including main rotor blades, tail rotor blades and gearboxes. For engines, the time between overhauls is generally a function of the complexity of the engine and how it is used. Piston-based engines are much more complex than turbine-powered engines, and generally have TBOs on the order of 1,200 to 2,000 hours of running time. They tend toward the lower number if they are new designs, or include boosting options such as a turbocharger. In comparison, jet engines and turboprop A turboprop is a turbine engine that drives an aircraft propeller. A turboprop consists of an intake, reduction gearbox, compressor, combustor, turbine, and a propelling nozzle. Air enters the intake and is compressed by the compressor. . ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aircraft Engine Controls
Aircraft engine controls provide a means for the pilot to control and monitor the operation of the aircraft's powerplant. This article describes controls used with a basic internal-combustion engine driving a propeller. Some optional or more advanced configurations are described at the end of the article. Jet turbine engines use different operating principles and have their own sets of controls and sensors. Basic controls and indicators * Throttle control - Sets the desired power level normally by a lever in the cockpit. In carburetted engines the lever is called ''throttle lever'' and controls the mass flow rate of the air-fuel mixture delivered to the cylinders by the amount of throttle valve opening. In engines with fuel injection system, the lever is typically referred to as ''power lever'' and controls the amount of fuel that is injected into the cylinders. * Propeller control or Governor - Adjusts the propeller blade pitch and regulates the engine load as necessary to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Business & Commercial Aviation
The Aviation Week Network is a New-York based B2B publishing and event production company. The company was owned and published by McGraw-Hill until it was purchased by Penton Media in 2013., then by Informa in 2016 The Aviation Week Network is best known for its flagship magazine, '' Aviation Week & Space Technology''. Publications The Aviation Week Network publishes three sector specific print magazines: ''Aviation Week & Space Technology'', ''Business & Commercial Aviation'' and ''Air Transport World''. It distributes ShowNews, a daily printed show report, at major international air shows. It also publishes a number of email market briefings targeted at the defense, space, airline, airport and business aviation sectors including ''Aviation Daily'', ''Aerospace Daily & Defense Report'', SpeedNews and ''The Weekly of Business Aviation''. Conference and events The Aviation Week Network's conference and exhibitions have predominantly specialized in the aircraft maintenance, r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Overall Pressure Ratio
In aeronautical engineering, overall pressure ratio, or overall compression ratio, is the ratio of the stagnation pressure as measured at the front and rear of the compressor of a gas turbine engine. The terms ''compression ratio'' and ''pressure ratio'' are used interchangeably. Overall compression ratio also means the ''overall cycle pressure ratio'' which includes intake ram. History of overall pressure ratios Early jet engines had limited pressure ratios due to construction inaccuracies of the compressors and various material limits. For instance, the Junkers Jumo 004 from World War II had an overall pressure ratio 3.14:1. The immediate post-war Snecma Atar improved this marginally to 5.2:1. Improvements in materials, compressor blades, and especially the introduction of multi-spool engines with several different rotational speeds, led to the much higher pressure ratios common today. Modern civilian engines generally operate between 40 and 55:1. The highest in-service is th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Computational Fluid Dynamics
Computational fluid dynamics (CFD) is a branch of fluid mechanics that uses numerical analysis and data structures to analyze and solve problems that involve fluid flows. Computers are used to perform the calculations required to simulate the free-stream flow of the fluid, and the interaction of the fluid ( liquids and gases) with surfaces defined by boundary conditions. With high-speed supercomputers, better solutions can be achieved, and are often required to solve the largest and most complex problems. Ongoing research yields software that improves the accuracy and speed of complex simulation scenarios such as transonic or turbulent flows. Initial validation of such software is typically performed using experimental apparatus such as wind tunnels. In addition, previously performed analytical or empirical analysis of a particular problem can be used for comparison. A final validation is often performed using full-scale testing, such as flight tests. CFD is applie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Planetary Gearbox
An epicyclic gear train (also known as a planetary gearset) consists of two gears mounted so that the center of one gear revolves around the center of the other. A carrier connects the centers of the two gears and rotates the planet and sun gears mesh so that their pitch circles roll without slip. A point on the pitch circle of the planet gear traces an epicycloid curve. In this simplified case, the sun gear is fixed and the planetary gear(s) roll around the sun gear. An epicyclic gear train can be assembled so the planet gear rolls on the inside of the pitch circle of a fixed, outer gear ring, or ring gear, sometimes called an ''annular gear''. In this case, the curve traced by a point on the pitch circle of the planet is a hypocycloid. The combination of epicycle gear trains with a planet engaging both a sun gear and a ring gear is called a ''planetary gear train''.J. J. Uicker, G. R. Pennock and J. E. Shigley, 2003, ''Theory of Machines and Mechanisms,'' Oxford University P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turbine
A turbine ( or ) (from the Greek , ''tyrbē'', or Latin ''turbo'', meaning vortex) is a rotary mechanical device that extracts energy from a fluid flow and converts it into useful work. The work produced by a turbine can be used for generating electrical power when combined with a generator.Munson, Bruce Roy, T. H. Okiishi, and Wade W. Huebsch. "Turbomachines." Fundamentals of Fluid Mechanics. 6th ed. Hoboken, NJ: J. Wiley & Sons, 2009. Print. A turbine is a turbomachine with at least one moving part called a rotor assembly, which is a shaft or drum with blades attached. Moving fluid acts on the blades so that they move and impart rotational energy to the rotor. Early turbine examples are windmills and waterwheels. Gas, steam, and water turbines have a casing around the blades that contains and controls the working fluid. Credit for invention of the steam turbine is given both to Anglo-Irish engineer Sir Charles Parsons (1854–1931) for invention of the reaction turbine, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
