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DC-4E
The Douglas DC-4E was an American experimental airliner that was developed before World War II. The DC-4E never entered production due to being superseded by an entirely new design, the Douglas DC-4/C-54, which proved very successful. Many of the aircraft's innovative design features found their way into the Nakajima G5N bomber after the single DC-4E prototype was sold to a Japanese airline and clandestinely dismantled for study by Nakajima at the behest of the Imperial Japanese Navy. Design and development The design originated in 1935 from a requirement by United Air Lines. The goal was to develop a much larger and more sophisticated replacement for the DC-3 before the first DC-3 had even flown. Such was the initial interest from other airlines, that American Airlines, Eastern Air Lines, Pan American Airways and Transcontinental and Western Air (TWA) joined United, providing $100,000 each toward the cost of developing the new aircraft. As cost and complexity rose, Pan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nakajima G5N
The Nakajima G5N ''Shinzan'' (, "Deep Mountain") was a four-engined long-range heavy bomber designed and built for the Imperial Japanese Navy prior to World War II. The Navy designation was "Experimental 13-Shi Attack Bomber"; the Allied code name was "Liz". Design and development The Nakajima G5N ''Shinzan'' originated due to the Imperial Japanese Navy's interest in developing a long-range attack bomber capable of carrying heavy loads of bombs or torpedoes a minimum distance of . To meet this requirement, it became apparent a four-engine lay-out would be necessary. As Japanese aircraft manufacturers lacked experience in building such large complex aircraft, the Navy was forced to search for a suitable existing foreign-made model upon which to base the new design. It settled on the American Douglas DC-4E airliner. In 1939 the sole prototype of this airliner (previously rejected by American airline companies) was purchased by Nippon Koku K.K. (Japan Airlines Co) and clandestinely ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boeing 307 Stratoliner
The Boeing Model 307 Stratoliner (or Strato-Clipper in Pan American service, or C-75 in USAAF service) is an American stressed-skin four-engine low-wing tailwheel monoplane airliner derived from the B-17 Flying Fortress bomber, which entered commercial service in July 1940. It was the first airliner in revenue service with a pressurized cabin, which with supercharged engines, allowed it to cruise above the weather. As such it represented a major advance over contemporaries, with a cruising speed of at compared to the Douglas DC-3s , at then in service.Davies, 2000, p.52 When it entered commercial service it had to have a crew of five to six, including two pilots, a flight engineer, two flight attendants and an optional navigator, and had a capacity for 33 passengers, which later modifications increased, first to 38, and eventually to 60. Development In 1935, Pan American Airways, United Airlines, American Airlines, Eastern Air Lines and Transcontinental & Western Air (T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Douglas DC-4
The Douglas DC-4 is an American four-engined (piston), propeller-driven airliner developed by the Douglas Aircraft Company. Military versions of the plane, the C-54 and R5D, served during World War II, in the Berlin Airlift and into the 1960s. From 1945, many civil airlines operated the DC-4 worldwide. Design and development Following proving flights by United Airlines of the DC-4E, it became obvious that the 52-seat airliner was too inefficient and unreliable to operate economically and the partner airlines, American Airlines, Eastern, Pan American, Trans World and United, recommended a lengthy list of changes to the design. Douglas took the new requirements and produced an entirely new, much smaller design, the DC-4A, with a simpler, still unpressurized fuselage, Pratt & Whitney R-2000 Twin Wasp engines, and a single fin and rudder. A tricycle landing gear was retained. With the entry of the United States into World War II, in December 1941, the United States Army Air ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pratt & Whitney R-2180-A Twin Hornet
The Pratt & Whitney R-2180-A Twin Hornet was a radial engine developed in the United States by Pratt & Whitney. It had two rows of seven cylinders each. Applications * Douglas DC-4E * North American XB-21 The North American XB-21 (manufacturer's model designation NA-21) and sometimes referred to by the name "Dragon", was a prototype bomber aircraft developed by North American Aviation in the late 1930s, for evaluation by the United States Army Air ... * Republic P-44 Rocket * Stearman XA-21 Specifications (R-2180-A) See also References * * External links Aerofiles Reciprocating Engines page* https://web.archive.org/web/20160411162935/http://www.enginehistory.org/P%26W/R-2180/R-2180Index.pdf {{DEFAULTSORT:Pratt and Whitney R-2180-A Twin Hornet 1930s aircraft piston engines Aircraft air-cooled radial piston engines R-2180 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Douglas Aircraft Company
The Douglas Aircraft Company was an American aerospace manufacturer based in Southern California. It was founded in 1921 by Donald Wills Douglas Sr. and later merged with McDonnell Aircraft in 1967 to form McDonnell Douglas; it then operated as a division of McDonnell Douglas. McDonnell Douglas later merged with Boeing in 1997. History 1920s The company was founded as the Douglas Company by Donald Wills Douglas Sr. on July 22, 1921 in Santa Monica, California, following dissolution of the Davis-Douglas Company. An early claim to fame was the first circumnavigation of the world by air in Douglas airplanes in 1924. In 1923, the U.S. Army Air Service was interested in carrying out a mission to circumnavigate the Earth for the first time by aircraft, a program called "World Flight". Donald Douglas proposed a modified Douglas DT to meet the Army's needs. The two-place, open cockpit DT biplane torpedo bomber had previously been produced for the U.S. Navy.Rumerman, Judy. "The Dou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Douglas Aircraft
The Douglas Aircraft Company was an American aerospace manufacturer based in Southern California. It was founded in 1921 by Donald Wills Douglas Sr. and later merged with McDonnell Aircraft in 1967 to form McDonnell Douglas; it then operated as a division of McDonnell Douglas. McDonnell Douglas later merged with Boeing in 1997. History 1920s The company was founded as the Douglas Company by Donald Wills Douglas Sr. on July 22, 1921 in Santa Monica, California, following dissolution of the Davis-Douglas Company. An early claim to fame was the first circumnavigation of the world by air in Douglas airplanes in 1924. In 1923, the U.S. Army Air Service was interested in carrying out a mission to circumnavigate the Earth for the first time by aircraft, a program called "World Flight". Donald Douglas proposed a modified Douglas DT to meet the Army's needs. The two-place, open cockpit DT biplane torpedo bomber had previously been produced for the U.S. Navy.Rumerman, Judy. "The Douglas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Imperial Japanese Airways
was the national airline of the Empire of Japan during World War II. History With the start of the Second Sino-Japanese War, there was a tremendous need for air transport capability by the Japanese military, which had traditionally drawn on the resources of the civilian national flag carrier, Japan Air Transport, for its charter requirements. As Japan Air Transport's capacity was limited, conflict arose between the Imperial Japanese Army and Imperial Japanese Navy over priority, and the government saw the need for the creation of a single, national monopoly. The government bought a 50 percent share of Japan Air Transport, and renamed it the ''Dai Nippon Kōkū'' in December 1938. In the late 1930s, Dai Nippon Kōkū operated an extensive international network with a combination of foreign and domestic aircraft. The airline was linked with Manchukuo National Airways for routes in Chosen and Manchukuo, and also had routes in the Japanese occupied portions of mainland China.< ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Civil Aircraft
List of civil aircraft is a list of articles on civilian aircraft with descriptions, which excludes aircraft operated by military organizations in civil markings, warbirds, warbirds used for racing, replica warbirds and research aircraft. A ABC Motors * ABC Robin single-seat cabin monoplane Abraham *Abraham Iris I & II two-seat parasol monoplane Abrams *Abrams P-1 Explorer pusher survey aircraft Ace Aircraft Manufacturing Company * Ace Baby Ace single-seat parasol monoplane ultralight homebuilt * Ace Junior Ace single-seat parasol monoplane ultralight homebuilt * Ace Scooter single-seat parasol monoplane ultralight homebuilt Acro Sport * Acro Sport I single-seat aerobatic biplane * Acro Sport II two-seat aerobatic biplane * Pober Pixie single-seat parasol monoplane * Pober Super Ace single-seat parasol monoplane Adam Aircraft Industries * Adam A500 twin piston engined executive passenger aircraft * Adam A700 executive jet Adcox * Adcox Student Prince two-seat open biplane ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Cover
Carl Anson Cover (26 April 1893 – 27 November 1944) was the chief test pilot and first to fly the Douglas Aircraft Company DC-1, DC-2, DC-3, DC-4, and the DC-5 airliners. Cover became Senior Vice President and general manager for Douglas Aircraft and later Vice President of Bell Aircraft. Early life Cover was born on 26 April 1893, to Hugh and Helen Cover in Roxbury, Pennsylvania. He attended high school in Harrisburg, Pennsylvania and worked as a millwright machinist at Bethlehem Steel, where his father was a foreman. Cover had three younger sisters, Margaret, Mary, and Anna. Aviation career US Army Air Service Cover enlisted in the US Army on 1 August 1917, and was sent to Kelly Field in San Antonio for pilot training. He was initially assigned to the 50th Aero Squadron, but was transferred to the 110th Aero Squadron later that same month. Cover was sent to the Military School of Aeronautics at UC Berkeley in November 1917. He was commissioned as an Lieutenant in June 191 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Santa Monica Airport
Santa Monica Airport (Santa Monica Municipal Airport) is a general aviation airport largely in Santa Monica, California, United States. The airport is about from the Pacific Ocean (Santa Monica Bay) and north of Los Angeles International Airport. The FAA's National Plan of Integrated Airport Systems for 2009–2013 categorized it as a '' reliever airport''. The airport is scheduled to close at the end of 2028. Santa Monica Airport covers a total of 215 acres (87 ha) of land. One of the airport's former hangars, the Barker Hangar, is in use as a public events venue, and is commonly used for a number of televised awards ceremonies and concerts. It is also currently being used as a small-scale supermarket set for the current version of ''Supermarket Sweep''. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vertical Stabilizer
A vertical stabilizer or tail fin is the static part of the vertical tail of an aircraft. The term is commonly applied to the assembly of both this fixed surface and one or more movable rudders hinged to it. Their role is to provide control, stability and trim in yaw (also known as directional or weathercock stability). It is part of the aircraft empennage, specifically of its stabilizers. The vertical tail is typically mounted on top of the rear fuselage, with the horizontal stabilizers mounted on the side of the fuselage (a configuration termed "conventional tail"). Other configurations, such as T-tail or twin tail, are sometimes used instead. Vertical stabilizers have occasionally been used in motor sports, with for example in Le Mans Prototype racing. Function Principle The vertical tail of an aircraft typically consists of a fixed vertical stabilizer or fin on which a movable rudder is mounted. A trim tab may similarly be mounted on the rudder. Together, their ro ... [...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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
