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General Electric H80
The General Electric H-Series is a family of turboprop aircraft engines produced by Walter Aircraft Engines, 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#Shaft horsepower, 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 Digital engine electronic control unit, Electronic Engine and Propeller Control (EEPC) system received EASA type certification in late 2016. The Diamond Dart 550 military tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WikiProject Aircraft
A WikiProject, or Wikiproject, is an affinity group for contributors with shared goals within the Wikimedia movement. WikiProjects are prevalent within the largest wiki, Wikipedia, and exist to varying degrees within Wikimedia project, sibling 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 outsi ... [...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 othe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AVIC AG300 (cropped)
The Aviation Industry Corporation of China (AVIC) is a Chinese state-owned publicly-traded aerospace and defense conglomerate headquartered in Beijing. AVIC is overseen by the State-owned Assets Supervision and Administration Commission of the State Council. It is ranked 140th in the ''Fortune'' Global 500 list as of 2021, and has over 100 subsidiaries, 27 listed companies and 500,000 employees across the globe. AVIC is also the sixth largest defense contractor globally as of 2022 and second largest Chinese defense contractor with total revenue of $79 billion (from both defense and non-defense services). History Since being established on 1 April 1951 as the Aviation Industry Administration Commission, the aviation industry of the People's Republic of China has been through 12 systemic reforms. In 1994, Avic was among the large industrial state-owned enterprises of China which were selected for a pilot program of restructuring as state holding companies, thereby enabling parti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paris Air Show 2017 Lasa Thrush 510G Left Front (cropped)
Paris () is the Capital city, capital and List of communes in France with over 20,000 inhabitants, largest city of France. With an estimated population of 2,048,472 residents in January 2025 in an area of more than , Paris is the List of cities in the European Union by population within city limits, fourth-most populous city in the European Union and the List of cities proper by population density, 30th most densely populated city in the world in 2022. Since the 17th century, Paris has been one of the world's major centres of finance, diplomacy, commerce, culture, Fashion capital, fashion, and gastronomy. Because of its leading role in the French art, arts and Science and technology in France, sciences and its early adoption of extensive street lighting, Paris became known as the City of Light in the 19th century. The City of Paris is the centre of the Île-de-France region, or Paris Region, with an official estimated population of 12,271,794 inhabitants in January 2023, or ... [...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 ... [...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 Gas turbine, gas turbine engine that drives an aircraft Propeller (aeronautics), propeller. A turboprop consists of an intake, reduction drive, reduction gearbox, gas compressor, compressor, combustor, turbine, and a propellin .. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aircraft Engine Controls
An aircraft ( aircraft) is a vehicle that is able to fly by gaining support from the air. It counters the force of gravity by using either static lift or the dynamic lift of an airfoil, or, in a few cases, direct downward thrust from its engines. Common examples of aircraft include airplanes, rotorcraft (including helicopters), airships (including blimps), gliders, paramotors, and hot air balloons. Part 1 (Definitions and Abbreviations) of Subchapter A of Chapter I of Title 14 of the U. S. Code of Federal Regulations states that aircraft "means a device that is used or intended to be used for flight in the air." The human activity that surrounds aircraft is called ''aviation''. The science of aviation, including designing and building aircraft, is called ''aeronautics.'' Crewed aircraft are flown by an onboard pilot, whereas unmanned aerial vehicles may be remotely controlled or self-controlled by onboard computers. Aircraft may be classified by different criteria, ... [...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 owned by Informa. The company was owned and published by McGraw-Hill until it was purchased by Penton Media in 2013. It was then bought 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 via an app at major international air shows. It also publishes a number of email market briefings targeted at the aerospace, defense, space, airline, business aviation and advanced air mobility sectors including ''Aviation Daily'', ''Aerospace Daily & Defense Report'', ''Advanced Air Mobility Report'', SpeedNews and ''The Weekly of Business Aviation''. Conference and events Aviation Week Network's conference and exhi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Overall Pressure Ratio
In aeronautical engineering, overall pressure ratio, or overall compression ratio, is the amount of times the pressure increases due to ram compression and the work done by the compressor stages. The compressor pressure ratio is the ratio of the stagnation pressures at the front and rear of the compressor of a gas turbine. Overall pressure ratio in a high-bypass turbofan is a function of inlet pressure ratio and compressor pressure ratio: OPR = IPR \times CPR The terms ''compression ratio'' and ''pressure ratio'' are used interchangeably. Advantages of high overall pressure ratios As can be seen in the formula for maximum theoretical thermal efficiency in an ideal Brayton cycle engine, a high pressure ratio leads to higher thermal efficiency: \eta = 1-\left(\frac\right) where PR is the pressure ratio and gamma the heat capacity ratio of the fluid, 1.4 for air. Keep in mind that pressure ratio scales exponentially with the number of compressor stages. Imagine a gas turbin ... [...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 dynamics, 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 value problem#Boundary value conditions, 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 turbulence, turbulent flows. Initial validation of such software is typically performed using experimental apparatus such as wind tunnels. In addition, previously performed Closed-form solution, analytical or Empirical research, empirical analysis of a particular problem can be used for compa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Planetary Gearbox
An epicyclic gear train (also known as a planetary gearset) is a gear reduction assembly consisting of two gears mounted so that the center of one gear (the "planet") revolves around the center of the other (the "sun"). A carrier connects the centers of the two gears and rotates, to carry the planet gear(s) around the sun gear. The planet and sun gears mesh so that their pitch circles roll without slip. If the sun gear is held fixed, then a point on the pitch circle of the planet gear traces an epicycloid curve. An epicyclic gear train can be assembled so the planet gear rolls on the inside of the pitch circle of an outer gear ring, or ring gear, sometimes called an ''annulus gear''. Such an assembly of 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 Press, New York.B. Paul, 1979, ''Kinematics and Dynamics of Planar Machinery'', Prent ... [...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 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. Gas, steam, and water turbines have a casing around the blades that contains and controls the working fluid. Modern steam turbines frequently employ both reaction and impulse in the same unit, typically varying the degree of reaction and impulse from the blade root to its periphery. History Hero of Alexandria demonstrat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
