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Douthitt Strip Airport
Douthitt Strip is a privately owned, private use airport located one nautical mile (2 km) east of the central business district of El Centro, a city in Imperial County, California, United States. History It provided contract glider training to the United States Army Air Forces from 1942 to 1944. Training was provided by Aeronautical Training Center, Inc. It used primarily C-47 Skytrains and Waco CG-4 unpowered gliders. The mission of the school was to train glider pilot students in proficiency in operation of gliders in various types of towed and soaring flight, both day and night, and in servicing gliders in the field. Facilities and aircraft Douthitt Strip has two runways with dirt surfaces: 4/22 is 1,800 by 100 feet (549 x 30 m) and 8/26 is 1,400 by 100 feet (427 x 30 m). There are 23 aircraft based at this airport: 91% single-engine and 9% ultralight. See also * California World War II Army Airfields References Other sources * * Manning, Thomas A. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USGS
The United States Geological Survey (USGS), formerly simply known as the Geological Survey, is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The organization's work spans the disciplines of biology, geography, geology, and hydrology. The USGS is a fact-finding research organization with no regulatory responsibility. The agency was founded on March 3, 1879. The USGS is a bureau of the United States Department of the Interior; it is that department's sole scientific agency. The USGS employs approximately 8,670 people and is headquartered in Reston, Virginia. The USGS also has major offices near Lakewood, Colorado, at the Denver Federal Center, and Menlo Park, California. The current motto of the USGS, in use since August 1997, is "science for a changing world". The agency's previous slogan, adopted on the occasion of its hundredth anniv ... [...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] |
USAAF Glider Training Airfields
During World War II civilian flying schools, under government contract, provided a considerable part of the flying training effort undertaken by the United States Army Air Forces.Manning, Thomas A. (2005), ''History of Air Education and Training Command, 1942–2002''. Office of History and Research, Headquarters, AETC, Randolph AFB, Texas History With the consolidation of pilot training by the United States Army Air Corps in 1931, nearly all flying training had taken place at Randolph Field, near San Antonio, Texas. During the 1930s, Randolph had produced about 500 new pilots per year, which was adequate for the peacetime air corps.Willard Weiner (1945), Two Hundred Thousand Flyers,: the Story of the Civilian AAF Pilot Training Program. Publisher: The Infantry Journal With war clouds gathering in Europe, especially after the 1938 Munich Agreement, General Henry H. Arnold, the Chief of Staff of the Air Corps, realized that the Army was going to have to increase the number o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USAAF Contract Flying School Airfields
During World War II civilian flying schools, under government contract, provided a considerable part of the flying training effort undertaken by the United States Army Air Forces.Manning, Thomas A. (2005), ''History of Air Education and Training Command, 1942–2002''. Office of History and Research, Headquarters, AETC, Randolph AFB, Texas History With the consolidation of pilot training by the United States Army Air Corps in 1931, nearly all flying training had taken place at Randolph Field, near San Antonio, Texas. During the 1930s, Randolph had produced about 500 new pilots per year, which was adequate for the peacetime air corps.Willard Weiner (1945), Two Hundred Thousand Flyers,: the Story of the Civilian AAF Pilot Training Program. Publisher: The Infantry Journal With war clouds gathering in Europe, especially after the 1938 Munich Agreement, General Henry H. Arnold, the Chief of Staff of the Air Corps, realized that the Army was going to have to increase the number o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Airfields Of The United States Army Air Forces In California
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 the I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Airports In Imperial County, California
An airport is an aerodrome with extended facilities, mostly for commercial air transport. Airports usually consists of a landing area, which comprises an aerially accessible open space including at least one operationally active surface such as a runway for a plane to take off and to land or a helipad, and often includes adjacent utility buildings such as control towers, hangars and terminals, to maintain and monitor aircraft. Larger airports may have airport aprons, taxiway bridges, air traffic control centres, passenger facilities such as restaurants and lounges, and emergency services. In some countries, the US in particular, airports also typically have one or more fixed-base operators, serving general aviation. Operating airports is extremely complicated, with a complex system of aircraft support services, passenger services, and aircraft control services contained within the operation. Thus airports can be major employers, as well as important hubs for tourism a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The National Map
''The National Map'' is a collaborative effort of the United States Geological Survey (USGS) and other federal, state, and local agencies to improve and deliver topographic information for the United States. The purpose of the effort is to provide "...a seamless, continuously maintained set of public domain geographic base information that will serve as a foundation for integrating, sharing, and using other data easily and consistently". ''The National Map'' is part of the USGS National Geospatial Program. The geographic information available includes orthoimagery (aerial photographs), elevation, geographic names, hydrography, boundaries, transportation, structures and land cover. ''The National Map'' is accessible via the Web, as products and services, and as downloadable data. Its uses range from recreation to scientific analysis to emergency response. ''The National Map'' is a significant contribution to the U.S. National Spatial Data Infrastructure (NSDI) from the Federa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
California World War II Army Airfields
During World War II, the United States Army Air Forces (USAAF) established numerous airfields in California for training pilots and aircrews of USAAF fighters and bombers. Most of these airfields were under the command of Fourth Air Force or the Army Air Forces Training Command (AAFTC). However, Air Technical Service Command (ATSC), Air Transport Command (ATC) and I Troop Carrier Command used a significant number of airfields in a support role. A significant number of them had operational squadrons for air defense of the Pacific coastline and anti-submarine patrols, and one was even handed over to Civil Air Patrol pilots for their use. In addition to the major fields, dozens of minor auxiliary fields and airstrips were built, generally to provide more room for basic flight training, but also to support other operations. A few of these were designed as "fallback fields" for launching defensive operations in case of a Japanese invasion. Most Army airfields were built with three runw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ultralight
Ultralight aviation (called microlight aviation in some countries) is the flying of lightweight, 1- or 2-seat fixed-wing aircraft. Some countries differentiate between weight-shift control and conventional three-axis control aircraft with ailerons, elevator and rudder, calling the former "microlight" and the latter "ultralight". During the late 1970s and early 1980s, mostly stimulated by the hang gliding movement, many people sought affordable powered flight. As a result, many aviation authorities set up definitions of lightweight, slow-flying aeroplanes that could be subject to minimum regulations. The resulting aeroplanes are commonly called "ultralight aircraft" or "microlights", although the weight and speed limits differ from country to country. In Europe, the sporting (FAI) definition limits the maximum stalling speed to and the maximum take-off weight to , or if a ballistic parachute is installed. The definition means that the aircraft has a slow landing speed and short ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aircraft Engine
An aircraft engine, often referred to as an aero engine, is the power component of an aircraft propulsion system. Most aircraft engines are either piston engines or gas turbines, although a few have been rocket powered and in recent years many small UAVs have used electric motors. Manufacturing industry In commercial aviation the major Western manufacturers of turbofan engines are Pratt & Whitney (a subsidiary of Raytheon Technologies), General Electric, Rolls-Royce, and CFM International (a joint venture of Safran Aircraft Engines and General Electric). Russian manufacturers include the United Engine Corporation, Aviadvigatel and Klimov. Aeroengine Corporation of China was formed in 2016 with the merger of several smaller companies. The largest manufacturer of turboprop engines for general aviation is Pratt & Whitney. General Electric announced in 2015 entrance into the market. Development history * 1848: John Stringfellow made a steam engine for a 10-foot wingspan mod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soil
Soil, also commonly referred to as earth or dirt, is a mixture of organic matter, minerals, gases, liquids, and organisms that together support life. Some scientific definitions distinguish ''dirt'' from ''soil'' by restricting the former term specifically to displaced soil. Soil consists of a solid phase of minerals and organic matter (the soil matrix), as well as a porous phase that holds gases (the soil atmosphere) and water (the soil solution). Accordingly, soil is a three-state system of solids, liquids, and gases. Soil is a product of several factors: the influence of climate, relief (elevation, orientation, and slope of terrain), organisms, and the soil's parent materials (original minerals) interacting over time. It continually undergoes development by way of numerous physical, chemical and biological processes, which include weathering with associated erosion. Given its complexity and strong internal connectedness, soil ecologists regard soil as an ecosystem. Most ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Waco CG-4
Waco ( ) is the county seat of McLennan County, Texas, United States. It is situated along the Brazos River and I-35, halfway between Dallas and Austin. The city had a 2020 population of 138,486, making it the 22nd-most populous city in the state. The 2021 U.S. Census population estimate for the city was 139,594. The Waco metropolitan statistical area consists of McLennan and Falls counties, which had a 2010 population of 234,906. Falls County was added to the Waco MSA in 2013. The 2021 U.S. census population estimate for the Waco metropolitan area was 280,428. History 1824–1865 Indigenous peoples occupied areas along the river for thousands of years. In historic times, the area of present-day Waco was occupied by the Wichita Indian tribe known as the "Waco" (Spanish: ''Hueco'' or ''Huaco''). In 1824, Thomas M. Duke was sent to explore the area after violence erupted between the Waco people and the European settlers. His report to Stephen F. Austin, described the Waco v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
