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Martin 4-0-4
The Martin 4-0-4 was an American pressurized passenger airliner built by the Glenn L. Martin Company. In addition to airline use initially in the United States, it was used by the United States Coast Guard and United States Navy as the RM-1G (later as the VC-3A). Design and development When production of the earlier Martin 2-0-2 was stopped due to problems with wing structural failure the company decided to re-wing an improved version (which had already flown as the Martin 3-0-3). The new aircraft was the Martin 4-0-4. It had structural changes to the wings, pressurization and was lengthened slightly to take 40 passengers. Like the earlier 2-0-2, the 4-0-4 was a cantilever monoplane with a standard tail unit (cantilever tailplane and single vertical stabilizer). It had an airstair in the lower tail section for passenger boarding and disembarkation, retractable tricycle landing gear and was powered by two Pratt & Whitney R-2800-CB16 radial piston engines. Operational history ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WikiProject Aircraft
A WikiProject, or Wikiproject, is a Wikimedia movement affinity group for contributors with shared goals. WikiProjects are prevalent within the largest wiki, Wikipedia, and exist to varying degrees within sister projects such as Wiktionary, Wikiquote, Wikidata, and Wikisource. They also exist in different languages, and translation of articles is a form of their collaboration. During the COVID-19 pandemic, CBS News noted the role of Wikipedia's WikiProject Medicine in maintaining the accuracy of articles related to the disease. Another WikiProject that has drawn attention is WikiProject Women Scientists, which was profiled by '' Smithsonian'' for its efforts to improve coverage of women scientists which the profile noted had "helped increase the number of female scientists on Wikipedia from around 1,600 to over 5,000". On Wikipedia Some Wikipedia WikiProjects are substantial enough to engage in cooperative activities with outside organizations relevant to the field at issue. For e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radial Engine
The radial engine is a reciprocating type internal combustion engine configuration in which the cylinders "radiate" outward from a central crankcase like the spokes of a wheel. It resembles a stylized star when viewed from the front, and is called a "star engine" in some other languages. The radial configuration was commonly used for aircraft engines before gas turbine engines became predominant. Engine operation Since the axes of the cylinders are coplanar, the connecting rods cannot all be directly attached to the crankshaft unless mechanically complex forked connecting rods are used, none of which have been successful. Instead, the pistons are connected to the crankshaft with a master-and-articulating-rod assembly. One piston, the uppermost one in the animation, has a master rod with a direct attachment to the crankshaft. The remaining pistons pin their connecting rods' attachments to rings around the edge of the master rod. Extra "rows" of radial cylinders can be added i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ozark Air Lines
Ozark Air Lines was an airline that operated in the United States from 1950 until 1986 when it was purchased by Trans World Airlines (TWA). In 2001, TWA was merged into American Airlines. A smaller regional airline that used the Ozark name (and whose operating certificate was purchased by Great Plains Airlines) operated in 2000–2001. From 1950 until 1986, Ozark's headquarters was located at St. Louis Lambert International Airport. History On , Ozark Air Lines was founded to fly services from Springfield, Missouri, and, in January 1945, it began flights between Springfield and St. Louis on Beechcraft Model 17 Staggerwings, replaced by Cessna AT-17 Bobcats in the late 1940s. The required license from the Civil Aeronautics Board (CAB) was not forthcoming and operations had to stop. In July 1950, Ozark was granted a certificate to operate Parks Air Transport routes not previously activated. Services were started on , using Douglas DC-3s from St. Louis to Chicago, Tulsa and M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Piedmont Airlines
Piedmont Airlines, Inc. is an American regional airline headquartered at the Salisbury Regional Airport in unincorporated Wicomico County, Maryland, near the city of Salisbury. The airline is a wholly-owned subsidiary of the American Airlines Group and it is paid by fellow group member American Airlines to staff, operate and maintain aircraft used on American Eagle flights that are scheduled, marketed and sold by American Airlines. Piedmont also provides ground handling and customer service for airports in the northeastern and western United States. Piedmont operates a fleet consisting of exclusively Embraer ERJ145 regional jet aircraft. Its main base is Philadelphia International Airport with an additional hub at Charlotte Douglas International Airport. The company has a team of more than 9,800 employees, operating flights to nearly 50 destinations. Started in 1961 as Henson Airlines, the airline was rebranded in 1993 to re-use the name of Piedmont Airlines (1948–1989), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hughes Airwest
Hughes Airwest was a regional airline in the western United States, backed by Howard Hughes' Summa Corporation. Its original name in 1968 was Air West and the air carrier was owned by Nick Bez. Hughes Airwest flew routes in the western U.S. and to several destinations in Mexico and Canada; its headquarters were on the grounds of San Francisco International Airport (SFO) in unincorporated San Mateo County, California. With distinctive all-yellow aircraft, the company slogan was ''Top Banana in the West''; Hughes Airwest was purchased by Republic Airlines on October 1, 1980. History On April 17, 1968, three "local service" airlines in the western U.S. merged to form Air West: * Pacific Air Lines, which previously operated as Southwest Airways when it was founded in 1941, was based in San Francisco, flew along the coast and California's Central Valley, linking cities from Medford, Oregon, to southern California. Pacific operated Boeing 727-100s and Fairch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
West Coast Airlines
West Coast Airlines was an airline (then called a "local service" airline as defined by the federal Civil Aeronautics Board) linking small cities in the Pacific Northwest with larger cities in Washington, Oregon, Idaho, Utah, Montana, California and north to Alberta in Canada. It was headquartered in the Westlake area of Seattle, Washington. History West Coast was formed in 1941 and acquired Empire Air Lines (formerly Zimmerly Airlines) in 1952. The company was based at Boeing Field in Seattle and began scheduled passenger service in 1946 with a fleet of Douglas DC-3s, marketed as ''Scenicliners''. A promotional film produced for the company in the 1960s said that in 1946 the federal Civil Aeronautics Board (CAB) granted the first regional airline certificate to West Coast Airlines as local service air carrier. In July 1953, West Coast scheduled flights to 32 airports in Washington, Oregon, and Idaho; in May 1968 it flew to 36 airports including 29 in those states. Like other L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bonanza Air Lines
Bonanza Air Lines was an airline (known at the time as a "local service" air carrier as defined by the federal Civil Aeronautics Board) in the Western United States (and eventually Mexico) from 1945 until it merged with two other local service airlines to form Air West in 1968. Its headquarters was initially Las Vegas, Nevada, and moved to Phoenix, Arizona in 1966. The airline began scheduled flights in 1945 with a twin engine Cessna between Nevada cities Las Vegas, Reno, Tonopah and Hawthorne. In the 1950s and early 1960s the airline expanded into Arizona, Southern California and Utah, including Phoenix, Los Angeles and Salt Lake City. Until 1978 Bonanza had the only scheduled nonstop flights between Las Vegas and Reno. It became an international airline soon before it merged with Pacific Air Lines and West Coast Airlines to form Air West, with Douglas DC-9s from Phoenix and Tucson to La Paz, Mazatlán and Puerto Vallarta. Air West would later be renamed Hughes Airwest. Hughes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pacific Air Lines
Pacific Air Lines was a regional airline (then called a "local service" air carrier as defined by the federal Civil Aeronautics Board) on the West Coast of the United States that began scheduled passenger flights in the mid 1940s under the name Southwest Airways. The company linked small cities in California with larger cities such as Los Angeles and San Francisco. Flights later operated to Portland, Oregon, and eventually reached Las Vegas and Reno in Nevada. Founded largely with money from investors from the Hollywood (film industry), Hollywood motion picture industry, the airline was noted for innovative safety practices and cost-saving procedures. The name Pacific Air Lines passed into history in 1968 in a merger with Bonanza Air Lines and West Coast Airlines, forming Air West, which then became Hughes Airwest following the acquisition of Air West by Howard Hughes. Southwest Airways era (1941–1958) Founding and wartime operations In early 1941 United States Army Air Ser ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fairchild Swearingen Metroliner
The Fairchild Swearingen Metroliner (previously the Swearingen Metro and later Fairchild Aerospace Metro) is a 19-seat, pressurized, twin-turboprop airliner first produced by Swearingen Aircraft and later by Fairchild Aircraft at a plant in San Antonio, Texas. Design The Metroliner was an evolution of the Swearingen Merlin turboprop-powered business aircraft. Ed Swearingen, a Texas fixed-base operator (FBO), started the developments that led to the Metro through gradual modifications to the Beechcraft Twin Bonanza and Queen Air business aircraft, which he dubbed Excalibur. A new fuselage (but with a similar nose) and vertical fin were then developed, married to salvaged and rebuilt (wet) Queen Air wings and horizontal tails, and Twin Bonanza landing gear; this became the SA26 Merlin, more or less a pressurized Excalibur. Through successive models (the SA26-T Merlin IIA and SA26-AT Merlin IIB) the engines were changed to Pratt & Whitney Canada PT6, then Garrett TPE331 t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atlanta
Atlanta ( ) is the capital and most populous city of the U.S. state of Georgia. It is the seat of Fulton County, the most populous county in Georgia, but its territory falls in both Fulton and DeKalb counties. With a population of 498,715 living within the city limits, it is the eighth most populous city in the Southeast and 38th most populous city in the United States according to the 2020 U.S. census. It is the core of the much larger Atlanta metropolitan area, which is home to more than 6.1 million people, making it the eighth-largest metropolitan area in the United States. Situated among the foothills of the Appalachian Mountains at an elevation of just over above sea level, it features unique topography that includes rolling hills, lush greenery, and the most dense urban tree coverage of any major city in the United States. Atlanta was originally founded as the terminus of a major state-sponsored railroad, but it soon became the convergence point among several rai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Douglas DC-3
The Douglas DC-3 is a propeller-driven airliner manufactured by Douglas Aircraft Company, which had a lasting effect on the airline industry in the 1930s to 1940s and World War II. It was developed as a larger, improved 14-bed sleeper version of the Douglas DC-2. It is a low-wing metal monoplane with conventional landing gear, powered by two radial piston engines of . (Although most DC-3s flying today use Pratt & Whitney R-1830 Twin Wasp engines, many DC-3s built for civil service originally had the Wright R-1820 Cyclone.) The DC-3 has a cruising speed of , a capacity of 21 to 32 passengers or 6,000 lbs (2,700 kg) of cargo, and a range of , and can operate from short runways. The DC-3 had many exceptional qualities compared to previous aircraft. It was fast, had a good range, was more reliable, and carried passengers in greater comfort. Before the war, it pioneered many air travel routes. It was able to cross the continental United States from New York to Los An ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Civil Aeronautics Board
The Civil Aeronautics Board (CAB) was an agency of the federal government of the United States, formed in 1938 and abolished in 1985, that regulated aviation services including scheduled passenger airline serviceStringer, David H."Non-Skeds: The Story of America’s Supplemental Airlines, Part 1: Industry in the United States,"'' AAHS Journal'', vol. 64, no.4 (Winter 2019) journal of the American Aviation Historical Society, excerpt online, retrieved April 8, 2020 and provided air accident investigation. The agency headquarters were in Washington, D.C. Functions The primary role of the CAB was to regulate scheduled commercial airline operations in the United States. The CAB strictly controlled all U.S. certificated airlines ("scheduled carriers") -- deciding which routes would be serviced by which airlines, and setting minimum limits on passenger fares (comparable to the Interstate Commerce Commission) -- effectively managing competition between airlines, and ensuring certain l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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