|
Olof Ljungström
Gustaf Olof "Olle" Ljungström (1918-2013) was a Swedish engineer. He was a visiting professor in aircraft design at Stanford University and the California Institute of Technology in the United States. Biography Olof Ljungström was born in 1918 as the son of Fredrik Ljungström and Signe (née Söderberg). He studied at Whitlockska samskolan, and studied aeronautics at the Royal Institute of Technology in Stockholm. He undertook military service as an automotive engineer in the Swedish Air Force in 1939 and 1940. He acquired a Ph.D. in transportation and aviation technology at the Royal Institute of Technology in 1973. Ljungström made contributions as an engineer in both his family businesses, notably in shale oil extraction, and beyond. He was recruited for the aircraft development at Saab. As a technical engineer, he worked with models from Saab 17 and Saab 29 Tunnan to Saab 35 Draken, the latter which was originally due to employ the jet engine STAL Dovern. He also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Olof Ljungström (flygingenjör) 1918-2013
Gustaf Olof "Olle" Ljungström (1918-2013) was a Swedish engineer. He was a visiting professor in aircraft design at Stanford University and the California Institute of Technology in the United States. Biography Olof Ljungström was born in 1918 as the son of Fredrik Ljungström and Signe (née Söderberg). He studied at Whitlockska samskolan, and studied aeronautics at the Royal Institute of Technology in Stockholm. He undertook military service as an automotive engineer in the Swedish Air Force in 1939 and 1940. He acquired a Ph.D. in transportation and aviation technology at the Royal Institute of Technology in 1973. Ljungström made contributions as an engineer in both his family businesses, notably in shale oil extraction, and beyond. He was recruited for the aircraft development at Saab. As a technical engineer, he worked with models from Saab 17 and Saab 29 Tunnan to Saab 35 Draken, the latter which was originally due to employ the jet engine STAL Dovern. He also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shale Oil Extraction
Shale oil extraction is an industrial process for unconventional oil production. This process converts kerogen in oil shale into shale oil by pyrolysis, hydrogenation, or thermal dissolution. The resultant shale oil is used as fuel oil or upgraded to meet refinery feedstock specifications by adding hydrogen and removing sulfur and nitrogen impurities. Shale oil extraction is usually performed above ground (''ex situ'' processing) by mining the oil shale and then treating it in processing facilities. Other modern technologies perform the processing underground (on-site or ''in situ'' processing) by applying heat and extracting the oil via oil wells. The earliest description of the process dates to the 10th century. In 1684, Great Britain granted the first formal extraction process patent. Extraction industries and innovations became widespread during the 19th century. The industry shrank in the mid-20th century following the discovery of large reserves of conventional oil, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Engineers From Stockholm
Engineers, as practitioners of engineering, are professionals who invent, design, analyze, build and test machines, complex systems, structures, gadgets and materials to fulfill functional objectives and requirements while considering the limitations imposed by practicality, regulation, safety and cost. "Science is knowledge based on our observed facts and tested truths arranged in an orderly system that can be validated and communicated to other people. Engineering is the creative application of scientific principles used to plan, build, direct, guide, manage, or work on systems to maintain and improve our daily lives." The word ''engineer'' (Latin ) is derived from the Latin words ("to contrive, devise") and ("cleverness"). The foundational qualifications of an engineer typically include a four-year bachelor's degree in an engineering discipline, or in some jurisdictions, a master's degree in an engineering discipline plus four to six years of peer-reviewed professiona ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wind Power In Sweden
Sweden consumes about 150 terawatt hours of electricity per year, of which about 19.8 TW·h (14.2%) was generated from domestic wind power resources in 2019, up from 2.4% in 2010 and 0.3% in 2000. In its official forecast , the Swedish Wind Energy Association (SWEA) projects that cumulative wind power capacity in the country will rise to 17.3 GW by the end of 2024 - 70% higher than 2020's roughly 10 GW. Such an expansion could increase the share of Sweden's electricity use met by wind power to over 30%. Statistics 1 Excluding exports Future developments Swedish package and paper products company Svenska Cellulosa Aktiebolaget and Norwegian power company Statkraft planned in 2009 to invest 16 billion kronor (€1.73 billion; US$2.4 billion) in a project which would consist of around 400 wind turbines in seven wind farms in Jämtland and Västernorrland counties. Statkraft will provide financing and SCA the land. :"... the wind power venture would ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wind Power
Wind power or wind energy is mostly the use of wind turbines to generate electricity. Wind power is a popular, sustainable, renewable energy source that has a much smaller impact on the environment than burning fossil fuels. Historically, wind power has been used in sails, windmills and windpumps but today it is mostly used to generate electricity. Wind farms consist of many individual wind turbines, which are connected to the electric power transmission network. New onshore (on-land) wind farms are cheaper than new coal or gas plants, but expansion of wind power is being hindered by fossil fuel subsidies. Onshore wind farms have a greater visual impact on the landscape than some other power stations. Small onshore wind farms can feed some energy into the grid or provide power to isolated off-grid locations. Offshore wind farms deliver more energy per installed capacity with less fluctuations and have less visual impact. Although there is less offshore wind power ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Swedish Navy
The Swedish Navy ( sv, Svenska marinen) is the naval branch of the Swedish Armed Forces. It is composed of surface and submarine naval units – the Fleet () – as well as marine units, the Amphibious Corps (). In Swedish, vessels of the Swedish Navy are given the prefix "HMS", short for (His/Her Majesty's Ship). In English, this is sometimes changed to "HSwMS" ("His Swedish Majesty's Ship") to differentiate Swedish vessels from those of the British Royal Navy. Founded under King Gustav I in 1522, the Swedish navy is one of the oldest continuously serving navies in the world, celebrating its 500th anniversary in 2022. History Early Swedish kings ( 9th–14th centuries) organised a Swedish Navy along the coastline through . This involved combined rowing and sailing ships (without artillery). This system became obsolete with the development of society and changes in military technology. No later than in the 14th century, the duty to serve in was replaced by a t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saab 401
The Saab 401 MEFA was an experimental air-cushioned vehicle with a weight of 2 tons and capable of about 40 knots on open water with two people on board. A single prototype was built under contract to the Swedish Navy. The craft was first tested in 1963. The Navy retired the project in 1967 when it donated the 401 prototype to the Maritime Museum in Karlskrona Sweden. History The Saab 401 MEFA project was created in the late 1950s as a collaboration between Saab and the Royal Swedish Naval Materiel Administration, Karlskronavarvet ( Saab Kockums) and the Swedish National Aeronautical Research Institute (FFA). Later the project was continued on lean funds at FFA. MEFA is the Swedish acronym for ''Markeffektfarkost'' ( ground effect vehicle); the craft was also known as the "MEFAN". Its design was led by Olof Ljungström. Vickers-Armstrongs was contracted for engineering work. It was first tested March 4, 1963, in Norrköping. In January 1964, the 401 prototype was delivered ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hovercraft
A hovercraft, also known as an air-cushion vehicle or ACV, is an amphibious craft capable of travelling over land, water, mud, ice, and other surfaces. Hovercraft use blowers to produce a large volume of air below the hull, or air cushion, that is slightly above atmospheric pressure. The pressure difference between the higher pressure air below the hull and lower pressure ambient air above it produces lift, which causes the hull to float above the running surface. For stability reasons, the air is typically blown through slots or holes around the outside of a disk- or oval-shaped platform, giving most hovercraft a characteristic rounded-rectangle shape. The first practical design for hovercraft was derived from a British invention in the 1950s. They are now used throughout the world as specialised transports in disaster relief, coastguard, military and survey applications, as well as for sport or passenger service. Very large versions have been used to transport hundreds ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
STAL Dovern
The STAL Dovern was a Swedish turbojet design of the early 1950s, named after a lake in Finspång municipality in Östergötland, Sweden. Intended to power the Saab 35 Draken, this aircraft was powered by the Rolls-Royce Avon instead. The Dovern did not enter production. Design and development The STAL company had been designing steam turbine engines and in the 1940s begun designing gas turbine engines. Their first running engine was the ''Skuten'', ground tested in 1949 but not flown. The Dovern was the next design, featuring a nine-stage axial compressor and single-stage turbine. First run in 1951, the engine was flight tested during 1953 using an Avro Lancaster provided by Air Service Training. The engine was installed underneath in a nacelle faired-in to the Lancaster's bomb bay. After several thousand hours of ground running and more than 300 hours of flight testing the engine was not selected, the Rolls-Royce Avon being preferred.Gunston 1989, p. 165. Applications *Av ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jet Engine
A jet engine is a type of reaction engine discharging a fast-moving jet (fluid), jet of heated gas (usually air) that generates thrust by jet propulsion. While this broad definition can include Rocket engine, rocket, Pump-jet, water jet, and hybrid propulsion, the term typically refers to an internal combustion airbreathing jet engine such as a turbojet, turbofan, ramjet, or pulse jet engine, pulse jet. In general, jet engines are internal combustion engines. Airbreathing jet engines typically feature a Axial compressor, rotating air compressor powered by a turbine, with the leftover power providing thrust through the propelling nozzle—this process is known as the Brayton cycle, Brayton thermodynamic cycle. Jet aircraft use such engines for long-distance travel. Early jet aircraft used turbojet engines that were relatively inefficient for subsonic flight. Most modern subsonic jet aircraft use more complex High-bypass turbofan, high-bypass turbofan engines. They give higher ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saab 35 Draken
The Saab 35 Draken (; 'The Kite' or 'The Dragon') is a Swedish fighter-interceptor developed and manufactured by Svenska Aeroplan Aktiebolaget ( SAAB) between 1955 and 1974. Development of the Saab 35 Draken started in 1948 as the Swedish air force future replacement for the then also in development Saab 29 Tunnan dayfighter and Saab 32B Lansen night fighter. It featured an innovative but unproven double delta wing, which led to the creation of a sub-scale test aircraft, the Saab 210, which was produced and flown to test this previously-unexplored aerodynamic feature. The full-scale production version entered service with frontline squadrons of the Swedish Air Force on 8 March 1960. It received the designation Flygplan 35 (Fpl 35; 'Aeroplane 35') and was produced in several variants and types, most commonly as a fighter type with the prefix ''J'' (J 35), standing for ''Jaktflygplan'' (Pursuit-aircraft), the Swedish term for fighter aircraft. The Saab 35 Draken is known for, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
_1918-2013.jpg "Click for more on -> Olof Ljungström")
