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Weather Drone
A weather drone, or weather-sensing uncrewed aerial vehicle (UAV), – is a remotely piloted aircraft weighing less than 25 kg and carrying sensors that collect thermodynamic and kinematic data from the mid and lower atmosphere (e.g. up to 6 km). Weather drones are not yet used to support National Meteorological and Hydrological Services (NMHS) due to ongoing negotiations on UAVs’ access to airspace and compliance with airspace regulations and technological development needed to meet the World Meteorological Organization's requirements. Mostly, weather drones are deployed to support scientific research missions and industry-specific operations. History Early proposals The first recorded UAV for measuring atmospheric parameters was in 1970, when a “small radio-controlled aircraft as usedas a measuring platform” for sharing meteorological measurement results. The study was supported by the Air Force Cambridge Research Laboratory and NASA, Wallops Station. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unmanned Aerial Vehicle
An unmanned aerial vehicle (UAV), commonly known as a drone, is an aircraft without any human pilot, crew, or passengers on board. UAVs are a component of an unmanned aircraft system (UAS), which includes adding a ground-based controller and a system of communications with the UAV. The flight of UAVs may operate under remote control by a human operator, as remotely-piloted aircraft (RPA), or with various degrees of autonomy, such as autopilot assistance, up to fully autonomous aircraft that have no provision for human intervention. UAVs were originally developed through the twentieth century for military missions too "dull, dirty or dangerous" for humans, and by the twenty-first, they had become essential assets to most militaries. As control technologies improved and costs fell, their use expanded to many non-military applications.Hu, J.; Bhowmick, P.; Jang, I.; Arvin, F.; Lanzon, A.,A Decentralized Cluster Formation Containment Framework for Multirobot Systems IEEE Tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Oklahoma
The University of Oklahoma (OU) is a Public university, public research university in Norman, Oklahoma. Founded in 1890, it had existed in Oklahoma Territory near Indian Territory for 17 years before the two Territories became the state of Oklahoma. In Fall 2022, the university had 29,705 students enrolled, most at its main campus in Norman. Employing nearly 3,000 faculty members, the school offers 152 Bachelor's degree, baccalaureate programs, 160 Master's degree, master's programs, 75 doctorate programs, and 20 majors at the first professional level. The university is Carnegie Classification of Institutions of Higher Education, classified among "R1: Doctoral Universities – Very high research activity". According to the National Science Foundation, OU spent $283 million on research and development in 2018, ranking it 82nd in the nation. Its Norman campus has two prominent museums, the Fred Jones Jr. Museum of Art, specializing in French Impressionism and Native Americans in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wind Resistance
In fluid dynamics, drag (sometimes called air resistance, a type of friction, or fluid resistance, another type of friction or fluid friction) is a force acting opposite to the relative motion of any object moving with respect to a surrounding fluid. This can exist between two fluid layers (or surfaces) or between a fluid and a solid surface. Unlike other resistive forces, such as dry friction, which are nearly independent of velocity, the drag force depends on velocity. Drag force is proportional to the velocity for low-speed flow and the squared velocity for high speed flow, where the distinction between low and high speed is measured by the Reynolds number. Even though the ultimate cause of drag is viscous friction, turbulent drag is independent of viscosity. Drag forces always tend to decrease fluid velocity relative to the solid object in the fluid's path. Examples Examples of drag include the component of the net aerodynamic or hydrodynamic force acting opposite to the d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atmospheric Icing
Atmospheric icing occurs in the atmosphere when water droplets suspended in air freezing, freeze on objects they come in contact with. It is not the same as freezing rain, which is caused directly by precipitation. Icing conditions can be particularly dangerous to aircraft, as the built-up ice changes the aerodynamics of the flight surfaces and airframe, which can increase the risk of a Stall (fluid dynamics), stall and potentially accidents. For this reason, on-board ice protection systems have been developed on aircraft intended to fly through these conditions. Water does not always freeze at . Water that persists in liquid state below this temperature is said to be supercooled, and supercooled water droplets cause icing on aircraft. Below , icing is rare because clouds at these temperatures usually consist of ice particles rather than supercooled water droplets. Below , supercooled water always freezes; therefore, icing is impossible. Icing also occurs on towers, wind turbines ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Météo-France
Météo-France is the French national meteorological service. Organisation The organisation was established by decree in June 1993 and is a department of the Ministry of Transportation. It is headquartered in Paris but many domestic operations have been decentralised to Toulouse. Its budget of around €300 million is funded by state grants, aeronautic royalties and sale of commercial services. Météo-France has a particularly strong international presence, and is the French representative at the World Meteorological Organization. The organisation is a leading member of EUMETSAT, responsible for the procurement of Meteosat weather satellites. It is also member of the Institut au service du spatial, de ses applications et technologies. It also a critical national weather service member of the ECMWF and hosts one of two major centres of the IFS numerical weather prediction model widely used worldwide. Worldwide In addition to its operations in metropolitan France, the agen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rotary-wing
A rotorcraft or rotary-wing aircraft is a heavier-than-air aircraft with rotary wings or rotor blades, which generate lift by rotating around a vertical mast. Several rotor blades mounted on a single mast are referred to as a rotor. The International Civil Aviation Organization (ICAO) defines a rotorcraft as "supported in flight by the reactions of the air on one or more rotors". Rotorcraft generally include aircraft where one or more rotors provide lift throughout the entire flight, such as helicopters, autogyros, and gyrodynes. Compound rotorcraft augment the rotor with additional thrust engines, propellers, or static lifting surfaces. Some types, such as helicopters are capable of vertical takeoff and landing. An aircraft which uses rotor lift for vertical flight but changes to solely fixed-wing lift in horizontal flight is not a rotorcraft but a convertiplane. Classes of rotorcraft Helicopter A helicopter is a rotorcraft whose rotors are driven by the engine(s) throughout ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Swiss Museum Of Transport
The Swiss Museum of Transport or Verkehrshaus der Schweiz (literally "Transportation House of Switzerland") in Lucerne opened in July 1959 and exhibits all forms of transport including trains, automobiles, ships and aircraft as well as communication technology. It is Switzerland's most popular museum. The museum also maintains a large collection of work by Hans Erni, a local painter and sculptor. There are several other attractions in the museum besides the collection, including a planetarium, a large-format cinema and a 1:20,000 scale aerial photograph of Switzerland. History The museum traces its history to 1897, when the first attempts at creating a museum of railway equipment were made. Following a national exhibition in 1914, the Swiss Railway Museum was founded by Swiss Federal Railways in 1918 in Zurich. The concept eventually grew to encompass all transportation and, in 1942, the Swiss Museum of Transport association was established. Swiss Federal Railways was joined b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meteomatics
Meteomatics AG is a private Swiss weather technology company headquartered in St. Gallen. Meteomatics was founded by German mathematician Dr. Martin Fengler in 2012. Meteomatics manufactures weather drones that fly up to 6 km to collect data from the mid and low levels of the atmosphere. The company also provides meteorological consulting services and forecast and historical weather data through an API. In 2022, Meteomatics launched EURO1k, a weather model that covers Europe with a resolution of 1 km. Technology Meteodrones Meteomatics started developing Meteodrones, which are weather drones, in 2013. Meteodrones are small flying weather stations capable of gathering pressure, temperature, humidity, wind direction, and wind speed in the lower 6km of the atmosphere. Whilst remotely sensed data from satellites, radar and ceilometers are available for this altitude range, in situ observations are considered the most reliable by meteorologists. Operational challenges associate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eye (cyclone)
The eye is a region of mostly calm weather at the center of tropical cyclones. The eye of a storm is a roughly circular area, typically in diameter. It is surrounded by the ''eyewall'', a ring of towering thunderstorms where the most severe weather and highest winds occur. The cyclone's lowest barometric pressure occurs in the eye and can be as much as 15 percent lower than the pressure outside the storm. In strong tropical cyclones, the eye is characterized by light winds and clear skies, surrounded on all sides by a towering, symmetric eyewall. In weaker tropical cyclones, the eye is less well defined and can be covered by the central dense overcast, an area of high, thick clouds that show up brightly on satellite imagery. Weaker or disorganized storms may also feature an eyewall that does not completely encircle the eye or have an eye that features heavy rain. In all storms, however, the eye is the location of the storm's minimum barometric pressure—where the atmospheric pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fixed-wing Aircraft
A fixed-wing aircraft is a heavier-than-air flying machine, such as an airplane, which is capable of flight using wings that generate lift caused by the aircraft's forward airspeed and the shape of the wings. Fixed-wing aircraft are distinct from rotary-wing aircraft (in which the wings form a rotor mounted on a spinning shaft or "mast"), and ornithopters (in which the wings flap in a manner similar to that of a bird). The wings of a fixed-wing aircraft are not necessarily rigid; kites, hang gliders, variable-sweep wing aircraft and airplanes that use wing morphing are all examples of fixed-wing aircraft. Gliding fixed-wing aircraft, including free-flying gliders of various kinds and tethered kites, can use moving air to gain altitude. Powered fixed-wing aircraft (airplanes) that gain forward thrust from an engine include powered paragliders, powered hang gliders and some ground effect vehicles. Most fixed-wing aircraft are flown by a pilot on board the craft, but some ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hurricane Ian
Hurricane Ian was a large and destructive Category 4 Atlantic hurricane that was the deadliest hurricane to strike the state of Florida since the 1935 Labor Day hurricane. Ian caused widespread damage across western Cuba and the southeast United States, especially the states of Florida and South Carolina. It was the ninth named storm, fourth hurricane, and second major hurricane of the 2022 Atlantic hurricane season. Ian originated from a tropical wave that moved off the coast of western Africa and across the central tropical Atlantic towards the Windward Islands. The wave moved into the Caribbean Sea on September 21 bringing heavy rain and gusty winds to Trinidad and Tobago, the ABC islands, and the northern coast of South America. It became a tropical depression on the morning of September 23 and strengthened into Tropical Storm Ian early the next day while it was southeast of Jamaica. Rapidly intensifying into a high-end Category 3 hurricane within 24 hours ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Oceanic And Atmospheric Administration
The National Oceanic and Atmospheric Administration (abbreviated as NOAA ) is an United States scientific and regulatory agency within the United States Department of Commerce that forecasts weather, monitors oceanic and atmospheric conditions, charts the seas, conducts deep sea exploration, and manages fishing and protection of marine mammals and endangered species in the U.S. exclusive economic zone. Purpose and function NOAA's specific roles include: * ''Supplying Environmental Information Products''. NOAA supplies to its customers and partners information pertaining to the state of the oceans and the atmosphere, such as weather warnings and forecasts via the National Weather Service. NOAA's information services extend as well to climate, ecosystems, and commerce. * ''Providing Environmental Stewardship Services''. NOAA is a steward of U.S. coastal and marine environments. In coordination with federal, state, local, tribal and international authorities, NOAA manages the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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