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Static Wick
Static wicks, also called static dischargers or static discharge wicks, are devices used to remove static electricity from aircraft in flight. They take the form of small sticks pointing backwards from the wings, and are fitted on almost all civilian aircraft. Function Precipitation static is an electrical charge on an airplane caused by flying through rain, snow storms, ice, or dust particles. Charge also accumulates through friction between the aircraft hull and the air. When the aircraft charge is great enough, it discharges into the surrounding air. Without static dischargers, the charge discharges in large batches through pointed aircraft extremities, such as antennas, wing tips, vertical and horizontal stabilizers, and other protrusions. The discharge creates a broad-band radio frequency noise from DC to 1000 MHz, which can affect aircraft communication. To control this discharge, so as to allow the continuous operation of navigation and radio communication systems ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Easyjet A319-100 G-ezbv Winglet Arp
EasyJet plc (styled as easyJet) is a British multinational low-cost airline group headquartered at London Luton Airport. It operates domestic and international scheduled services on 927 routes in more than 34 countries via its affiliate airlines EasyJet UK, EasyJet Switzerland, and EasyJet Europe. The company employs circa 13,000 people, based throughout Europe but mainly in the UK. EasyJet plc is listed on the London Stock Exchange and is a constituent of the FTSE 100 Index. Since its establishment in 1995, EasyJet has expanded through a combination of acquisitions, and base openings fuelled by consumer demand for low-cost air travel. The group, along with associate companies EasyJet UK, EasyJet Europe and EasyJet Switzerland, operates 321 aircraft. It has 29 bases across Europe, the largest being Gatwick. In 2022, the airline carried more than 69.7 million passengers, making it the second largest budget airline in Europe by number of passengers carried, behind Ryana ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flying Magazine
''Flying'', sometimes styled ''FLYING'', is an aviation magazine published since 1927 and called ''Popular Aviation'' prior to 1942, as well as ''Aeronautics'' for a brief period. It is read by pilots, aircraft owners, aviation enthusiasts and aviation-oriented executives in business, commercial and general aviation markets worldwide. It has the largest paid subscription, newsstand, and international circulation of any U.S.-based aviation magazine, according to its former publisher the Bonnier Corporation, and is promoted as "the world's most widely read aviation magazine". It is owned by digital media entrepreneur Craig Fuller. History The magazine first began publishing in 1927 as ''Popular Aviation'' soon after Charles Lindbergh's historic transatlantic flight. It was given the name ''Aeronautics'' briefly from 1929–1930 and was changed back to ''Popular Aviation'' until 1942, when it became ''Flying''. In June 2009, ''Flying'' owner, Hachette Filipacchi Media U. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ground Loop (electricity)
In an electrical system, a ground loop or earth loop occurs when two points of a circuit are intended to have the same ground reference potential but instead have a different potential between them. This is typically caused when enough current is flowing in the connection between the two ground points to produce a voltage drop and cause the two points to be at different potentials. Current may be produced in a ground loop by electromagnetic induction. Ground loops are a major cause of noise, hum, and interference in audio, video, and computer systems. Wiring practices that protect against ground loops include ensuring that all vulnerable signal circuits are referenced to one point as ground. The use of differential signaling can provide rejection of ground-induced interference. The removal of ground connections to equipment in an effort to eliminate ground loops will also eliminate the protection the safety ground connection is intended to provide. Description A ground l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electrostatic Discharge
Electrostatic discharge (ESD) is a sudden and momentary flow of electric current between two differently-charged objects when brought close together or when the dielectric between them breaks down, often creating a visible electric spark, spark associated with the static electricity between the objects. ESD can create spectacular electric sparks (lightning, with the accompanying sound of thunder, is an example of a large-scale ESD event), but also less dramatic forms, which may be neither seen nor heard, yet still be large enough to cause damage to sensitive electronic devices. Electric sparks require a field strength above approximately 4 million V/m in air, as notably occurs in lightning strikes. Other forms of ESD include corona discharge from sharp electrodes, brush discharge from blunt electrodes, etc. ESD can cause harmful effects of importance in industry, including explosions in gas, fuel vapor and coal dust, as well as failure of solid state electronics components such as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Precipitation (meteorology)
In meteorology, precipitation is any product of the condensation of atmospheric water vapor that falls from clouds due to gravitational pull. The main forms of precipitation include drizzle, rain, rain and snow mixed ("sleet" in Commonwealth usage), snow, ice pellets, graupel and hail. Precipitation occurs when a portion of the atmosphere becomes saturated with water vapor (reaching 100% relative humidity), so that the water condenses and "precipitates" or falls. Thus, fog and mist are not precipitation; their water vapor does not condense sufficiently to precipitate, so fog and mist do not fall. (Such a non-precipitating combination is a colloid.) Two processes, possibly acting together, can lead to air becoming saturated with water vapor: cooling the air or adding water vapor to the air. Precipitation forms as smaller droplets coalesce via collision with other rain drops or ice crystals within a cloud. Short, intense periods of rain in scattered locations are called shower (p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pan Am Flight 214
Pan Am Flight 214 was a scheduled flight of Pan American World Airways from San Juan, Puerto Rico, to Baltimore, and then to Philadelphia in the United States. On December 8, 1963, while flying from Baltimore to Philadelphia, the Boeing 707-121 crashed near Elkton, Maryland. All 81 passengers and crew on the plane were killed. The crash was Pan Am's first fatal accident with the 707, which it had introduced to its fleet five years earlier. An investigation by the Civil Aeronautics Board concluded that a lightning strike had probably ignited fuel vapor in one of the aircraft's fuel tanks, causing an explosion that destroyed the left wing. The exact manner of ignition was never determined, but the investigation increased awareness of how lightning can damage aircraft, leading to new regulations that resulted in safety improvements. The crash also inspired research into the safety of several types of aviation fuel and into ways of changing the design of aircraft fuel systems to ma ... [...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 United States Department of the Air Fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extreme Weather
Extreme weather includes unexpected, unusual, severe weather, severe, or unseasonal weather; weather at the extremes of the historical distribution—the range that has been seen in the past. Extreme events are based on a location's recorded weather history. The main types of extreme weather include heat waves, cold waves, droughts, and heavy precipitation or storm events, such as tropical cyclones. Extreme weather can have various effects, from natural hazards such as floods and landslides to social costs on human health and the economy. Severe weather is a particular type of extreme weather which poses risks to life and property. Weather patterns in a given region vary with time, and so extreme weather can be attributed, at least in part, to the natural Climate variability and change, climate variability that exists on Earth. For example, the El Niño–Southern Oscillation, El Niño-Southern Oscillation (ENSO) or the North Atlantic oscillation (NAO) are climate phenomena that i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naval Research Laboratory
The United States Naval Research Laboratory (NRL) is the corporate research laboratory for the United States Navy and the United States Marine Corps. Located in Washington, DC, it was founded in 1923 and conducts basic scientific research, applied research, technological development and prototyping. The laboratory's specialties include plasma physics, space physics, materials science, and tactical electronic warfare. NRL is one of the first US government scientific R&D laboratories, having opened in 1923 at the instigation of Thomas Edison, and is currently under the Office of Naval Research. As of 2016, NRL was a United States Navy Working Capital Fund, Navy Working Capital Fund activity, which means it is not a line-item in the US Federal Budget. Instead of direct funding from Congress, all costs, including overhead, were recovered through sponsor-funded research projects. NRL's research expenditures were approximately $1 billion per year. Research The Naval Research L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Static Discharger With Plastic Guards
Static may refer to: Places *Static Nunatak, in Antarctica * Static, Kentucky and Tennessee, U.S. * Static Peak, a mountain in Wyoming, U.S. ** Static Peak Divide, a mountain pass near the peak Science and technology Physics *Static electricity, a net charge of an object **Triboelectric effect, due to frictional contact between different materials * Static spacetime, a spacetime having a global, non-vanishing, timelike Killing vector field which is irrotational *Statics, a branch of physics concerned with physical systems in equilibrium **Hydrostatics, the branch of fluid mechanics that studies fluids at rest Engineering *Static pressure, in aircraft instrumentation and fluid dynamics ** Static port, a proprietary sensor used on aircraft to measure static pressure *White noise or static noise, a random signal with a flat power spectral density **Radio noise In radio reception, radio noise (commonly referred to as radio static) is unwanted random radio frequency electrical signal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
