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Tatalina LRRS Airport
Tatalina LRRS Airport is a military airstrip located seven nautical miles (8.1 miles; 13 km) south of Takotna, in the Yukon–Koyukuk Census Area of the U.S. state of Alaska. The airstrip is also located west-southwest of McGrath, Alaska. It is not open for public use. Overview Tatalina Airport is a United States Air Force military airstrip. Its mission is to provide access to the Tatalina Long Range Radar Site for servicing and other requirements. The airstrip was constructed as part of the construction of the Tatalina Air Force Station. During the station's operational use as a manned radar station, it provided transportation for station personnel and for supplies and equipment to be airlifted to the station. With the manned radar station's closure in 1983, the airstrip now provides access to the unattended site for maintenance personnel and other requirements. It is not staffed by any support personnel, and is not open to the public. During the winter months, it may b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eleventh Air Force - Emblem
In music or music theory, an eleventh is the Musical note, note eleven scale degrees from the root (chord), root of a chord (music), chord and also the interval (music), interval between the root and the eleventh. The interval can be also described as a Interval (music)#Simple and compound, compound perfect fourth, fourth, spanning an octave plus a fourth. Since there are only seven degrees in a diatonic scale the eleventh degree is the same as the subdominant. The eleventh is considered highly Consonance and dissonance, dissonant with the third (chord), major third. A perfect eleventh is an eleventh which spans exactly 17 semitones. See also *Eleventh chord *Suspended chord References Chord factors Fourths (music) Compound intervals {{music-theory-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
611th Air Support Group
__NOTOC__ Year 611 ( DCXI) was a common year starting on Friday (link will display the full calendar) of the Julian calendar. The denomination 611 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Persian Empire * Byzantine–Persian War: The Persian army under Shahrbaraz captures Antioch, and most of the remaining Byzantine fortresses in Syria and Mesopotamia. King Khosrau II is re-establishing a neo- Persian Empire, and intensifies his war effort. The Byzantine army, ruined by defeat and corruption, offers only half-hearted opposition. Britain * Cynegils becomes king of the West Saxons, or Wessex, after the death of his uncle Ceolwulf (according to the '' Anglo-Saxon Chronicle''). He rules from 611 to 643 and shares power to some extent with his eldest son, Cwichelm, who may have been given Upper Wessex (approximate date). By topic Religio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Takotna, Alaska
Takotna(''Tochotno’'') in Upper Kuskokwim) is a census-designated place (CDP) in the Yukon-Koyukuk Census Area, Alaska, United States. The population was 52 as of the 2010 Census, an increase of % from 50 at the 2000 Census. Geography According to the 2010 Census, Takotna is located at (62.982342, -156.084059). It has a total area of , all of which is land. As per the USGS National Elevation Dataset, the elevation is . Demographics Takotna first appeared on the 1930 U.S. Census as an unincorporated village. It appeared on every successive census except in 1970, when it did not return a total. It returned in 1980 and was made a census-designated place (CDP). As of the 2000 United States Census, there were 50 people, 19 households, and 12 families residing in the CDP. The population density was 2.1 people per square mile (0.8/km2). There were 49 housing units at an average density of 2.1/sq mi (0.8/km2). The racial makeup of the CDP was 58.00% White and 42.00% Nati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Federal Aviation Administration
The Federal Aviation Administration (FAA) is the largest transportation agency of the U.S. government and regulates all aspects of civil aviation in the country as well as over surrounding international waters. Its powers include air traffic management, certification of personnel and aircraft, setting standards for airports, and protection of U.S. assets during the launch or re-entry of commercial space vehicles. Powers over neighboring international waters were delegated to the FAA by authority of the International Civil Aviation Organization. Created in , the FAA replaced the former Civil Aeronautics Administration (CAA) and later became an agency within the U.S. Department of Transportation. Major functions The FAA's roles include: *Regulating U.S. commercial space transportation *Regulating air navigation facilities' geometric and flight inspection standards *Encouraging and developing civil aeronautics, including new aviation technology *Issuing, suspending, or revoking ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Airstrip
An aerodrome (Commonwealth English) or airdrome (American English) is a location from which aircraft flight operations take place, regardless of whether they involve air cargo, passengers, or neither, and regardless of whether it is for public or private use. Aerodromes include small general aviation airfields, large commercial airports, and military air bases. The term ''airport'' may imply a certain stature (having satisfied certain certification criteria or regulatory requirements) that not all aerodromes may have achieved. That means that all airports are aerodromes, but not all aerodromes are airports. Usage of the term "aerodrome" remains more common in Ireland and Commonwealth nations, and is conversely almost unknown in American English, where the term "airport" is applied almost exclusively. A water aerodrome is an area of open water used regularly by seaplanes, floatplanes or amphibious aircraft for landing and taking off. In formal terminology, as defined by th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yukon–Koyukuk Census Area, Alaska
Yukon–Koyukuk Census Area () is a census area in the U.S. state of Alaska. As of the 2020 census, the population was 5,343, down from 5,588 in 2010. With an area of , it is the largest of any county or county-equivalent in the United States, or about the same size as the state of Montana. It is part of the unorganized borough of Alaska and therefore has no borough seat. Its largest communities are the cities of Galena, in the west, and Fort Yukon, in the northeast. Geography According to the U.S. Census Bureau, the census area has , of which is land and (1.6%) is water. The area is roughly the same size as the U.S. state of Montana or the country of Germany, and makes up slightly more than 1/5 of the state of Alaska. The area is bigger than 47 of the other 49 states, with only California and Texas being bigger. Its population density, at , is the lowest in the United States. Adjacent boroughs and census areas * North Slope Borough, Alaska – north * Southeast Fairban ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alaska
Alaska ( ; russian: Аляска, Alyaska; ale, Alax̂sxax̂; ; ems, Alas'kaaq; Yup'ik: ''Alaskaq''; tli, Anáaski) is a state located in the Western United States on the northwest extremity of North America. A semi-exclave of the U.S., it borders the Canadian province of British Columbia and the Yukon territory to the east; it also shares a maritime border with the Russian Federation's Chukotka Autonomous Okrug to the west, just across the Bering Strait. To the north are the Chukchi and Beaufort Seas of the Arctic Ocean, while the Pacific Ocean lies to the south and southwest. Alaska is by far the largest U.S. state by area, comprising more total area than the next three largest states (Texas, California, and Montana) combined. It represents the seventh-largest subnational division in the world. It is the third-least populous and the most sparsely populated state, but by far the continent's most populous territory located mostly north of the 60th parallel, with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
McGrath, Alaska
McGrath (''Tochak’'' in Upper Kuskokwim, ''Digenegh'' in Deg Xinag) is a city and village on the Kuskokwim River in Alaska, United States. The population was 301 at the 2020 census. Despite its small population, the village is an important transportation and economic hub for the area. History The Old Town McGrath site, across the river from present-day McGrath, was a meeting and trading place for Big River, Nikolai, Telida, and Lake Minchumina villagers. In 1904, Abraham Appel established a trading post in Old Town. In 1906, gold was discovered in the Innoko District, and in 1907, and at . Since McGrath was the northernmost point on the Kuskokwim River accessible by large riverboats, it became a regional supply center. A town was established at the site of Old McGrath in 1907, and was named for Peter McGrath, a local United States Marshal. The Iditarod Trail also contributed to McGrath's role as a supply center. From 1911 to 1920, hundreds of people walked and mushed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Air Force
The United States Air Force (USAF) is the air service branch of the United States Armed Forces, and is one of the eight uniformed services of the United States. Originally created on 1 August 1907, as a part of the United States Army Signal Corps, the USAF was established as a separate branch of the United States Armed Forces in 1947 with the enactment of the National Security Act of 1947. It is the second youngest branch of the United States Armed Forces and the fourth in order of precedence. The United States Air Force articulates its core missions as air supremacy, global integrated intelligence, surveillance and reconnaissance, rapid global mobility, global strike, and command and control. The United States Air Force is a military service branch organized within the Department of the Air Force, one of the three military departments of the Department of Defense. The Air Force through the Department of the Air Force is headed by the civilian Secretary of the Air Force ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tatalina Long Range Radar Site
Tatalina Air Force Station (AAC ID: F-10, LRR ID: A-05) is a closed United States Air Force General Surveillance Radar station. It is located west-southwest of McGrath, Alaska. The ground control intercept (GCI) station was closed on 1 November 1983, and was redesignated as a Long Range Radar (LRR) site as part of the Alaska Radar System. Today, it remains active as part of the Alaska NORAD Region under the jurisdiction of the 611th Air Support Group, Elmendorf AFB, Alaska. History Tatalina AFS was a continental defense radar station constructed to provide the United States Air Force early warning of an attack by the Soviet Union on Alaska. Construction of the station began in 1950 and was completed in April 1952. The Army Transportation Corps undertook the project, which was originally named Takotna after the mountain on which it was built. The radar station site was located on the summit at of elevation (top camp), with a ground support station in a valley at the base at ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Runway
According to the International Civil Aviation Organization (ICAO), a runway is a "defined rectangular area on a land aerodrome prepared for the landing and takeoff of aircraft". Runways may be a man-made surface (often asphalt concrete, asphalt, concrete, or a mixture of both) or a natural surface (sod, grass, soil, dirt, gravel, ice, sand or road salt, salt). Runways, as well as taxiways and Airport apron, ramps, are sometimes referred to as "tarmac", though very few runways are built using Tarmacadam, tarmac. Takeoff and landing areas defined on the surface of water for seaplanes are generally referred to as waterways. Runway lengths are now International Civil Aviation Organization#Use of the International System of Units, commonly given in meters worldwide, except in North America where feet are commonly used. History In 1916, in a World War I war effort context, the first concrete-paved runway was built in Clermont-Ferrand in France, allowing local company Michelin to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gravel
Gravel is a loose aggregation of rock fragments. Gravel occurs naturally throughout the world as a result of sedimentary and erosive geologic processes; it is also produced in large quantities commercially as crushed stone. Gravel is classified by particle size range and includes size classes from granule- to boulder-sized fragments. In the Udden-Wentworth scale gravel is categorized into granular gravel () and pebble gravel (). ISO 14688 grades gravels as fine, medium, and coarse, with ranges 2–6.3 mm to 20–63 mm. One cubic metre of gravel typically weighs about 1,800 kg (or a cubic yard weighs about 3,000 lb). Gravel is an important commercial product, with a number of applications. Almost half of all gravel production is used as aggregate for concrete. Much of the rest is used for road construction, either in the road base or as the road surface (with or without asphalt or other binders.) Naturally occurring porous gravel deposits have a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
