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Piper PA-31T Cheyenne
The Piper PA-31T Cheyenne is a turboprop development of the earlier PA-31P Pressurized Navajo. Development Originally, the aircraft was an upgraded version of the Pressurized Navajo equipped with two Pratt & Whitney Canada PT6A-28 turboprop engines. Later, the aircraft was further refined and developed, including aerodynamic improvements and fuselage extensions. The PA-31T led to the development of the PA-42 Cheyenne III and IV. Operators Military operators ; * Mauritanian Air Force ; *United States Department of Defense. Variants ;PA-31T Cheyenne: Initial production version, powered by two 620-shp (462-kW) Pratt & Whitney Canada PT6A-28 turboprop engines. ;PA-31T-1: Original designation of the PT-31T Cheyenne I. Powered by 500-shp (373-kW) Pratt & Whitney Canada PT6A-II turboprop engines. ;PA-31T Cheyenne II: Improved version, renamed version of original powered by two 620-shp (462-kW) Pratt & Whitney Canada PT6A-28 turboprop engines. ;PA-31T2 Cheyenne IIXL: Stretched ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turboprop
A turboprop is a turbine engine that drives an aircraft propeller. A turboprop consists of an intake, reduction gearbox, compressor, combustor, turbine, and a propelling nozzle. Air enters the intake and is compressed by the compressor. Fuel is then added to the compressed air in the combustor, where the fuel-air mixture then combusts. The hot combustion gases expand through the turbine stages, generating power at the point of exhaust. Some of the power generated by the turbine is used to drive the compressor and electric generator. The gases are then exhausted from the turbine. In contrast to a turbojet or turbofan, the engine's exhaust gases do not provide enough energy to create significant thrust, since almost all of the engine's power is used to drive the propeller. Technological aspects Exhaust thrust in a turboprop is sacrificed in favor of shaft power, which is obtained by extracting additional power (beyond that necessary to drive the compressor) from turbine ex ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Constant-speed Propeller
In aeronautics, a variable-pitch propeller is a type of propeller (airscrew) with blades that can be rotated around their long axis to change the blade pitch. A controllable-pitch propeller is one where the pitch is controlled manually by the pilot. Alternatively, a constant-speed propeller is one where the pilot sets the desired engine speed ( RPM), and the blade pitch is controlled automatically without the pilot's intervention so that the rotational speed remains constant. The device which controls the propeller pitch and thus speed is called a propeller governor or constant speed unit. Reversible propellers are those where the pitch can be set to negative values. This creates reverse thrust for braking or going backwards without the need to change the direction of shaft revolution. Some aircraft have ground-adjustable propellers, however these are not considered variable-pitch. These are typically found only on light aircraft and microlights. Purpose When an aircraft is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Low-wing Aircraft
A monoplane is a fixed-wing aircraft configuration with a single mainplane, in contrast to a biplane or other types of multiplanes, which have multiple planes. A monoplane has inherently the highest efficiency and lowest drag of any wing configuration and is the simplest to build. However, during the early years of flight, these advantages were offset by its greater weight and lower manoeuvrability, making it relatively rare until the 1930s. Since then, the monoplane has been the most common form for a fixed-wing aircraft. Characteristics Support and weight The inherent efficiency of the monoplane is best achieved in the cantilever wing, which carries all structural forces internally. However, to fly at practical speeds the wing must be made thin, which requires a heavy structure to make it strong and stiff enough. External bracing can be used to improve structural efficiency, reducing weight and cost. For a wing of a given size, the weight reduction allows it to fly slower ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1970s United States Civil Utility Aircraft
Year 197 ( CXCVII) was a common year starting on Saturday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Magius and Rufinus (or, less frequently, year 950 ''Ab urbe condita''). The denomination 197 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 Roman Empire * February 19 – Battle of Lugdunum: Emperor Septimius Severus defeats the self-proclaimed emperor Clodius Albinus at Lugdunum (modern Lyon). Albinus commits suicide; legionaries sack the town. * Septimius Severus returns to Rome and has about 30 of Albinus's supporters in the Senate executed. After his victory he declares himself the adopted son of the late Marcus Aurelius. * Septimius Severus forms new naval units, manning all the triremes in Italy with heavily armed troops for war in the East. His soldiers embark on an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Piper Aircraft
Piper Aircraft, Inc. is a manufacturer of general aviation aircraft, located at the Vero Beach Regional Airport in Vero Beach, Florida, United States and owned since 2009 by the Government of Brunei. Throughout much of the mid-to-late 20th century, it was considered to be one of the "Big Three" in the field of general aviation manufacturing, along with Beechcraft and Cessna.Pattillo (1998), p. 83 Between its founding in 1927 and the end of 2009, the company produced 144,000 aircraft in 160 certified models, of which 90,000 are still flying. History The company was founded as the Taylor Brothers Aircraft Manufacturing Company in September 1927 by brothers Clarence G. Taylor and Gordon A. Taylor in Rochester, New York. The company was renamed Taylor Brothers Aircraft Corporation in April 1928, shortly before Gordon Taylor died in an aircraft accident on April 24, 1928. The company was enticed to move to Bradford, Pennsylvania, with the promise of a larger facility and in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mitsubishi Mu-2
The Mitsubishi MU-2 is a Japanese high-wing, twin-engine turboprop aircraft with a pressurized cabin manufactured by Mitsubishi Heavy Industries. It made its maiden flight in September 1963 and was produced until 1986. It is one of postwar Japan's most successful aircraft, with 704 manufactured in Japan and San Angelo, Texas, in the United States. Design and development Work on the MU-2, Mitsubishi's first postwar aircraft design, began in 1956. Designed as a light twin turboprop transport suitable for a variety of civil and military roles, the MU-2 first flew on 14 September 1963. This first MU-2, and the three MU-2As built, were powered by the Turbomeca Astazou turboprop. Civil MU-2s powered by Garrett engines were certified as variants of the MU-2B, using the MU-2B type followed by a number. For marketing purposes, each variant was given a suffix letter; the MU-2B-10, for example, was sold as the MU-2D, while the MU-2B-36A was marketed as the MU-2N. The MU-2 has a high c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cessna 441 Conquest II
The Cessna 441 Conquest II is the first turboprop powered aircraft designed by Cessna, and was meant to fill the gap between their jets and piston-engined aircraft. It was developed in November 1974, with the first aircraft delivered in September 1977. It is a pressurized, 8–9 passenger turbine development of the Cessna 404 Titan. Development The original design from 1972 for this aircraft was known as the Model 435, and was to be powered by Continental GTSIO-520X engines with three-bladed propellers. By 1975, the designed evolved into the turboprop-powered Model 441. It was certified by the FAA on August 19, 1977. Cessna renamed the Model 441 the Conquest II in 1983. 1984 models starting with constructor number 195 used lighter weight four-bladed McCauley propellers. Phillips, Edward H.: ''Wings of Cessna, Model 120 to the Citation III'', Flying Books, 1986. A 441 with Pratt & Whitney Canada PT6A-112 turboprops was flown in 1986, but did not enter production. A smaller ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cessna 425
The Cessna 425, known as the Corsair and later as the Conquest I, is an eight-seat American pressurized turboprop twin-engined light aircraft. Now out of production, it was built by Cessna Aircraft of Wichita, Kansas, between 1980 and 1986. Design and development The 425 was introduced as a competitor to the Beechcraft King Air. The 425 was introduced in 1980 and was a derivation of the Cessna 421, powered by two Pratt & Whitney PT6 engines. In comparison to the King Air C90 "the result was an $875,000 pressurized twin-turboprop that could fly 15 knots to 20 knots faster than the C90, cruise 250 miles farther with four passengers aboard and burn 15-percent less fuel. It also costs $200,000 less to buy". The 425 was very easy to fly and was noted by reviewers for its spacious cabin with large windows for good visibility and comfortable seats. The original Corsair was developed into the Conquest I by customer demand for more cabin space and a higher maximum takeoff weight. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beechcraft King Air
The Beechcraft King Air is a line of American utility aircraft produced by Beechcraft. The King Air line comprises a number of twin-turboprop models that have been divided into two families. The Model 90 and 100 series developed in the 1960s are known as King Airs, while the later T-tail Model 200 and 300 series were originally marketed as Super King Airs, with the name "Super" being dropped by Beechcraft in 1996 (although it is still often used to differentiate the 200 and 300 series King Airs from their smaller stablemates). The King Air was the first aircraft in its class and was produced continuously from 1964 to 2021. It outsold all of its turboprop competitors combined. It has recently faced competition from jet aircraft such as the Embraer Phenom 100, Honda HA-420 HondaJet and Cessna Citation Mustang; as well as from newer turboprop aircraft including the Piaggio P180 Avanti, and single-engine Piper Malibu Meridian, Pilatus PC-12, and Socata TBM. Development Mod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Piper PA-31T Cheyenne Photo D Ramey Logan
Piper may refer to: People * Piper (given name) * Piper (surname) Arts and entertainment Fictional characters Comics * Piper (Morlock), in the Marvel Universe * Piper (Mutate), in the Marvel Universe Television * Piper Chapman, lead character in the American comedy-drama series ''Orange Is the New Black'' * Piper Halliwell, one of the lead characters on ''Charmed'' * Piper Hart, Henry Hart's little sister in the Nickelodeon series ''Henry Danger'' * Piper Willis, in the Australian soap opera ''Neighbours'' * Piper Willowbrook, an elf in the Nickelodeon series ''Mysticons'' * Mr. Piper, host on the 1960s Canadian television show of the same name * Piper, an artificial intelligence in ''Emergence'' * Piper, a tactical expert in ''Storm Hawks'' Other * Piper McLean, a daughter of Aphrodite and one of the seven in Rick Riordan's ''The Heroes of Olympus'' * Piper Pinwheeler, a character in the 2005 animated film ''Robots'' * The Piper, a character in ''The Keys to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Piper Aircraft
Piper Aircraft, Inc. is a manufacturer of general aviation aircraft, located at the Vero Beach Regional Airport in Vero Beach, Florida, United States and owned since 2009 by the Government of Brunei. Throughout much of the mid-to-late 20th century, it was considered to be one of the "Big Three" in the field of general aviation manufacturing, along with Beechcraft and Cessna.Pattillo (1998), p. 83 Between its founding in 1927 and the end of 2009, the company produced 144,000 aircraft in 160 certified models, of which 90,000 are still flying. History The company was founded as the Taylor Brothers Aircraft Manufacturing Company in September 1927 by brothers Clarence G. Taylor and Gordon A. Taylor in Rochester, New York. The company was renamed Taylor Brothers Aircraft Corporation in April 1928, shortly before Gordon Taylor died in an aircraft accident on April 24, 1928. The company was enticed to move to Bradford, Pennsylvania, with the promise of a larger facility and in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pratt & Whitney Canada PT6A
The Pratt & Whitney Canada PT6 is a turboprop aircraft engine produced by Pratt & Whitney Canada. Its design was started in 1958, it first ran in February 1960, first flew on 30 May 1961, entered service in 1964 and has been continuously updated since. It consists of two basic sections: a gas generator with accessory gearbox and a free power turbine with reduction gearbox, and is often seemingly mounted backwards in an aircraft in so far as the intake is at the rear and the exhaust at the front. Many variants of the PT6 have been produced, not only as turboprops but also as turboshaft engines for helicopters, land vehicles, hovercraft, and boats; as auxiliary power units; and for industrial uses. By November 2015, 51,000 had been produced, had logged 400 million flight hours from 1963 to 2016. It is known for its reliability with an in-flight shutdown rate of 1 per 651,126 hours in 2016. The PT6A covers the power range between while the PT6B/C are turboshaft variants for he ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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