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Sparrevohn LRRS Airport
Sparrevohn LRRS Airport is a military airstrip located south of Sparrevohn, in the Bethel Census Area of the U.S. state of Alaska. The airstrip is also located south of McGrath, Alaska, and west of Anchorage, Alaska . It is not open for public use. Overview Sparrevohn Airport is a United States Air Force military airstrip. Its mission is to provide access to the Sparrevohn Long Range Radar Site for servicing and other requirements. The airstrip was constructed in 1952 as part of the construction of the Sparrevohn 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 site for supply runs and to transfer crews. It is staffed by five or fewer civilian contractors at any one time, and is not open to the public. During the winter months, it may be inacces ... [...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] |
Sparrevohn
Sparrevohn Air Force Station (AAC ID: F-15, LRR ID: A-06) is a closed United States Air Force General Surveillance Radar station. It is located southwest of Fairbanks, Alaska. The ground control intercept (GCI) station was closed on 1 November 1983, and was re-designated 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 Sparrevohn 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 January 1953 and was completed in October 1955. The Army Transportation Corps undertook the project. The radar station site was located on the summit of Cairn Mountain at 3,400 ft elevation (top camp), with a ground support station on a slight ridge between 1,600 and 1,800 ft at the base ... [...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] |
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] |
Sparrevohn, Alaska
Sparrevohn Air Force Station (AAC ID: F-15, LRR ID: A-06) is a closed United States Air Force General Surveillance Radar station. It is located southwest of Fairbanks, Alaska. The ground control intercept (GCI) station was closed on 1 November 1983, and was re-designated 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 Sparrevohn 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 January 1953 and was completed in October 1955. The Army Transportation Corps undertook the project. The radar station site was located on the summit of Cairn Mountain at 3,400 ft elevation (top camp), with a ground support station on a slight ridge between 1,600 and 1,800 ft at the base ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bethel Census Area, Alaska
Bethel Census Area is a census area in the U.S. state of Alaska. As of the 2020 census, the population is 18,666, up from 17,013 in 2010. It is part of the unorganized borough and therefore has no borough seat. Its largest community is the city of Bethel, which is also the largest city in the unorganized borough. Geography According to the U.S. Census Bureau, the census area has an area of , of which is land and (10.8%) is water. Its territory includes the large Nunivak Island in the Bering Sea. Its land area is comparable to that of Kentucky, which has an area of slightly under forty thousand square miles. Adjacent boroughs and census areas * Kusilvak Census Area, Alaska - northwest * Yukon-Koyukuk Census Area, Alaska - north * Matanuska-Susitna Borough, Alaska - east * Kenai Peninsula Borough, Alaska - southeast * Lake and Peninsula Borough, Alaska - south * Dillingham Census Area, Alaska - south National protected areas * Alaska Maritime National Wildlife Refuge (pa ... [...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] |
Anchorage, Alaska
Anchorage () is the largest city in the U.S. state of Alaska by population. With a population of 291,247 in 2020, it contains nearly 40% of the state's population. The Anchorage metropolitan area, which includes Anchorage and the neighboring Matanuska-Susitna Borough, had a population of 398,328 in 2020, accounting for more than half the state's population. At of land area, the city is the fourth-largest by area in the United States and larger than the smallest state, Rhode Island, which has . Anchorage is in Southcentral Alaska, at the terminus of the Cook Inlet, on a peninsula formed by the Knik Arm to the north and the Turnagain Arm to the south. In September 1975, the City of Anchorage merged with the Greater Anchorage Area Borough, creating the Municipality of Anchorage. The municipal city limits span , encompassing the urban core, a joint military base, several outlying communities, and almost all of Chugach State Park. Because of this, less than 10% of the Municipalit ... [...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] |
Sparrevohn Long Range Radar Site
Sparrevohn Air Force Station (AAC ID: F-15, LRR ID: A-06) is a closed United States Air Force General Surveillance Radar station. It is located southwest of Fairbanks, Alaska. The ground control intercept (GCI) station was closed on 1 November 1983, and was re-designated 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 Sparrevohn 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 January 1953 and was completed in October 1955. The Army Transportation Corps undertook the project. The radar station site was located on the summit of Cairn Mountain at 3,400 ft elevation (top camp), with a ground support station on a slight ridge between 1,600 and 1,800 ft at the base of ... [...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] |
