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Seawind Ocean Technology
Seawind Ocean Technology B.V., a Netherlands based company, is a manufacturer (OEM) of integrated floating wind turbine and green hydrogen systems. Seawind is developing two-bladed floating wind turbines (6.2 MW and 12.2 MW) suitable for installation in all seas, including hurricane regions and ultra-deep waters. Founded on original research and development work by NASA, Hamilton Standard (now United Technologies Corporation/Raytheon Technologies), Enel, and Aeritalia; Seawind's offshore wind power turbines with integrated foundations have been patented, proven at 1.5 MW, and achieved Type D DNV certification in December 2019. The company is now planning the launch of its Seawind 6 demonstrator to be followed by the pre-series Seawind 12, a project earmarked for installation as early as 2024-25 that seeks to obtain DNV's highest certification level. Overview Seawind Ocean Technology is developing offshore wind energy solutions that meet the needs of large and small install ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Besloten Vennootschap
A (, lit. "Privately held company, closed company"; formally a , , ) or (SRL) is the Netherlands, Dutch and Belgium, Belgian version of a private limited liability company. The company is owned by shareholders; the company's Share (finance), shares are privately registered and not freely transferable. It is the most common form of limited company in the Netherlands and Belgium. A Dutch bv may be created by one or more individuals or Juristic person, legal entities, Dutch or foreign, with a minimum paid in capital of less than €1. A notarial act, notarized deed of incorporation is executed and filed. The deed must be in Dutch. It must contain details of the incorporators, and of the initial Members of the Board, their amounts of participation and payments of initial capital. The deed also contains the Articles of Association (law), Articles of Association, consisting of at least: * the company name (which must begin or end with "bv") * the city where the company has its regi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Enel
Enel S.p.A. is an Italian Multinational corporation, multinational manufacturer and distributor of electricity and gas. Enel, which originally stood for Ente nazionale per l'energia elettrica (National Electricity Board), was first established as a public body at the end of 1962, and then transformed into a limited company in 1992. In 1999, following the liberalisation of the electricity market in Italy, Enel was privatised. The Italian state, through the Ministry of Economy and Finance (Italy), Ministry of Economy and Finance, is the main shareholder, with 23.6% of the share capital as of 1 April 2016. Enel is the 73rd largest company in the world by revenue, with 88 billion in 2021. As of 2018, Enel is also the second largest power company in the world by revenue after the State Grid Corporation of China. The company is quoted on the FTSE MIB index on the Milan Stock Exchange. History 1898–1962: Towards a national policy for electricity In 1898, the production of elect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Army Air Corps
The United States Army Air Corps (USAAC) was the aerial warfare service component of the United States Army between 1926 and 1941. After World War I, as early aviation became an increasingly important part of modern warfare, a philosophical rift developed between more traditional ground-based army personnel and those who felt that aircraft were being underutilized and that air operations were being stifled for political reasons unrelated to their effectiveness. The USAAC was renamed from the earlier United States Army Air Service on 2 July 1926, and was part of the larger United States Army. The Air Corps became the United States Army Air Forces (USAAF) on 20 June 1941, giving it greater autonomy from the Army's middle-level command structure. During World War II, although not an administrative echelon, the Air Corps (AC) remained as one of the combat arms of the Army until 1947, when it was legally abolished by legislation establishing the Department of the Air Force. The Air ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Igor Sikorsky
Igor Ivanovich Sikorsky (russian: И́горь Ива́нович Сико́рский, p=ˈiɡərʲ ɪˈvanəvitʃ sʲɪˈkorskʲɪj, a=Ru-Igor Sikorsky.ogg, tr. ''Ígor' Ivánovich Sikórskiy''; May 25, 1889 – October 26, 1972)Fortier, Rénald"Igor Sikorsky: One Man, Three Careers." ''aviation.technomuses.ca,''1996. Retrieved: October 29, 2008. was a Russian–American"Britannica Concise Encyclopedia" Encyclopædia Britannica, Inc. 2006, p. 1751. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sikorsky Aircraft
Sikorsky Aircraft is an American aircraft manufacturer based in Stratford, Connecticut. It was established by aviation pioneer Igor Sikorsky in 1923 and was among the first companies to manufacture helicopters for civilian and military use. Previously owned by United Technologies Corporation, in November 2015 Sikorsky was sold to Lockheed Martin. History On 5 March 1923, the Sikorsky Aero Engineering Corporation was founded near Roosevelt Field, New York, by Igor Sikorsky, an immigrant to the United States who was born in Kyiv. In 1925, the company name was changed to Sikorsky Manufacturing Company. After the success of the Sikorsky S-38">S-38, the company was reorganized as the Sikorsky Aviation Corporation with capital of $5,000,000, allowing the purchase of land and the building of a modern aircraft factory in Stratford. In 1929, the company moved to Stratford, Connecticut, and it became a part of United Aircraft and Transport Corporation (later United Technologies Corporatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doman LZ-1A (Sikorsky R-6 Conversion)
The Sikorsky R-6 is an American light two-seat helicopter of the 1940s. In Royal Air Force and Royal Navy service, it was named the Hoverfly II. Development The R-6/Hoverfly II was developed to improve on the successful Sikorsky R-4. In order to enhance performance, a completely new streamlined fuselage was designed and the boom carrying the tail rotor was lengthened and straightened. The main rotor and transmission system of the R-4 were retained. Sikorsky allotted their Model 49 designation to the new design. Later, dynamically-balanced modifications to the rotor were carried out by Doman Helicopters Inc. The new aircraft could attain compared with by the earlier design. Initial production was by Sikorsky, but most examples were built by Nash-Kelvinator. Some of the later aircraft were fitted with more powerful engines. Operational history The first R-6s were delivered to the United States Army Air Forces (USAAF) in late 1944 and some were transferred to the United States N ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
LCOE
The levelized cost of electricity (LCOE), or levelized cost of energy, is a measure of the average net present cost of electricity generation for a generator over its lifetime. It is used for investment planning and to compare different methods of electricity generation on a consistent basis. The LCOE "represents the average revenue per unit of electricity generated that would be required to recover the costs of building and operating a generating plant during an assumed financial life and duty cycle", and is calculated as the ratio between all the discounted costs over the lifetime of an electricity generating plant divided by a discounted sum of the actual energy amounts delivered. Inputs to LCOE are chosen by the estimator. They can include the cost of capital, decommissioning, fuel costs, fixed and variable operations and maintenance costs, financing costs, and an assumed utilization rate. Calculation The LCOE is calculated as: : \mathrm = \frac = \frac :: : Typically ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nacelle (wind Turbine)
A nacelle is a cover housing that houses all of the generating components in a wind turbine, including the generator, gearbox, drive train A drivetrain (also frequently spelled as drive train or sometimes drive-train) is the group of components that deliver mechanical power from the prime mover to the driven components. In automotive engineering, the drivetrain is the components o ..., and brake assembly. A notable feature now found on some off-shore wind turbines is a large sturdy helicopter-hoisting platform built on top of the nacelle, capable of supporting service personnel and their tools, winched down to the platform from a helicopter hovering above it.Eize de VriesClose up: Alstom Haliade 6MW Prototype ''Windpower Monthly'', 11 July 2012. Wind turbine rotors are stopped, feathered and locked before personnel are dropped down to or picked up from the platforms. References Wind turbines {{Windpower-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Variable-pitch Propeller (aeronautics)
In aeronautics, a variable-pitch propeller is a type of propeller (airscrew) with blades that can be rotated around their long axis to change the blade pitch. A controllable-pitch propeller is one where the pitch is controlled manually by the pilot. Alternatively, a constant-speed propeller is one where the pilot sets the desired engine speed (RPM), and the blade pitch is controlled automatically without the pilot's intervention so that the rotational speed remains constant. The device which controls the propeller pitch and thus speed is called a propeller governor or constant speed unit. Reversible propellers are those where the pitch can be set to negative values. This creates reverse thrust for braking or going backwards without the need to change the direction of shaft revolution. Some aircraft have ground-adjustable propellers, however these are not considered variable-pitch. These are typically found only on light aircraft and microlights. Purpose When an aircraft is st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yaw Drive
The yaw drive is an important component of the horizontal axis wind turbines' yaw system. To ensure the wind turbine is producing the maximal amount of electric energy at all times, the yaw drive is used to keep the rotor facing into the wind as the wind direction changes. This only applies for wind turbines with a horizontal axis rotor. The wind turbine is said to have a yaw error if the rotor is not aligned to the wind. A yaw error implies that a lower share of the energy in the wind will be running through the rotor area. (The generated energy will be approximately proportional to the cosine of the yaw error). History When the windmills of the 18th century included the feature of rotor orientation via the rotation of the nacelle, an actuation mechanism able to provide that turning moment was necessary. Initially the windmills used ropes or chains extending from the nacelle to the ground in order to allow the rotation of the nacelle by means of human or animal power. Another ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glidden Doman
Glidden Doman (January 28, 1921 – June 6, 2016) was an American aeronautical engineer and pioneer in helicopters and modern wind turbines. He founded one of America's original six helicopter companies (Doman Helicopters, Inc.) after making major contributions to the use of Sikorsky helicopters during World War II. Doman Helicopters' most prominent achievement was the Doman LZ-5/YH-31 eight-place helicopter, which received FAA certification on December 30, 1955. The unique feature of this helicopter was its hinge-less but gimbaled, tilting rotor hub that greatly reduced stress and vibration in the blades and in the whole helicopter. Doman was one of the first to transfer knowledge of helicopter rotor dynamics technology to wind turbines. The 1973 arab oil embargo prompted NASA Glenn Research Center in Cleveland, Ohio to lead a 7-year US wind energy program for the development of utility-scale horizontal axis wind turbines. This program featured the creation of Boeing's MOD-2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Low-carbon Economy
A low-carbon economy (LCE) or decarbonised economy is an economy based on energy sources that produce low levels of greenhouse gas (GHG) emissions. GHG emissions due to human activity are the dominant cause of observed climate change since the mid-20th century. Continued emission of greenhouse gases will cause long-lasting changes around the world, increasing the likelihood of severe, pervasive, and irreversible effects for people and ecosystems. Shifting to a low-carbon economy on a global scale could bring substantial benefits both for developed and developing countries. Many countries around the world are designing and implementing low-emission development strategies (LEDS). These strategies seek to achieve social, economic, and environmental development goals while reducing long-term greenhouse gas emissions and increasing resilience to the effects of climate change. Globally implemented low-carbon economies are therefore proposed as a precursor to the more advanced, zero-ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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