Pilatus P-3
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Pilatus P-3
The Pilatus P-3 was a military training aircraft built by Pilatus Aircraft of Switzerland. Design and development The Pilatus P-3 was designed for primary and advanced training (including night flying, aerobatics and instrument flying). The military version was designated P-3-03. It was of all-metal construction with a retractable tricycle undercarriage and tandem seating. There was provision for underwing racks for light practice bombs or rockets and a machine gun in a pod below the port wing. Operational history The first prototype was built in 1953 and flew on 3 September, the same year. The Swiss Air Force received 72 examples of this aircraft while the Brazilian Navy acquired six. The Swiss Air Force used the P-3 as a training aircraft until 1983, although it continued to be used as a liaison aircraft for another decade. In 1993–1995, 65 ex-Swiss Air Force aircraft were sold on the private market. Operators ; * Brazilian Navy ; * Swiss Air Force The Swiss Air F ...
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Trainer (aircraft)
A trainer is a class of aircraft designed specifically to facilitate flight training of pilots and aircrews. The use of a dedicated trainer aircraft with additional safety features—such as tandem flight controls, forgiving flight characteristics and a simplified cockpit arrangement—allows pilots-in-training to safely advance their skills in a more forgiving aircraft. Civilian pilots are normally trained in a light aircraft, with two or more seats to allow for a student and instructor. Tandem and side by side The two seating configurations for trainer aircraft are: pilot and instructor side by side, or in tandem, usually with the pilot in front and the instructor behind. The side-by-side seating configuration has the advantage that pilot and instructor can see each other's actions, allowing the pilot to learn from the instructor and the instructor to correct the student pilot. The tandem configuration has the advantage of being closer to the normal working environment that ...
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Four Stroke
A four-stroke (also four-cycle) engine is an internal combustion (IC) engine in which the piston completes four separate strokes while turning the crankshaft. A stroke refers to the full travel of the piston along the cylinder, in either direction. The four separate strokes are termed: #Intake: Also known as induction or suction. This stroke of the piston begins at top dead center (T.D.C.) and ends at bottom dead center (B.D.C.). In this stroke the intake valve must be in the open position while the piston pulls an air-fuel mixture into the cylinder by producing vacuum pressure into the cylinder through its downward motion. The piston is moving down as air is being sucked in by the downward motion against the piston. #Compression: This stroke begins at B.D.C, or just at the end of the suction stroke, and ends at T.D.C. In this stroke the piston compresses the air-fuel mixture in preparation for ignition during the power stroke (below). Both the intake and exhaust valves are clos ...
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1950s Swiss Military Trainer Aircraft
Year 195 ( CXCV) was a common year starting on Wednesday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Scrapula and Clemens (or, less frequently, year 948 ''Ab urbe condita''). The denomination 195 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 * Emperor Septimius Severus has the Roman Senate deify the previous emperor Commodus, in an attempt to gain favor with the family of Marcus Aurelius. * King Vologases V and other eastern princes support the claims of Pescennius Niger. The Roman province of Mesopotamia rises in revolt with Parthian support. Severus marches to Mesopotamia to battle the Parthians. * The Roman province of Syria is divided and the role of Antioch is diminished. The Romans annexed the Syrian cities of Edessa and Nisibis. Severus re-establish his head ...
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Pilatus Aircraft
Pilatus Aircraft Ltd. is an aerospace manufacturer located in Stans, Switzerland. In June 2016, the company employed 1,905 people. The company has mostly produced aircraft for niche markets, in particular short takeoff and landing (STOL) aircraft as well as military training aircraft. During the 1950s and 1960s, Pilatus developed a short takeoff and landing (STOL) light civil transport aircraft, the PC-6 Porter. During 1973, it was decided to restart work on the PC-7 programme and it entered production as the PC-7 Turbo Trainer. In 1979, Pilatus acquired Britten-Norman, manufacturer of the Britten-Norman Islander and Britten-Norman Defender aircraft. During the 1980s, it developed the PC-9, an improved derivative of the PC-7. During the 1990s, Pilatus opened up a broader civilian market with the introduction of the PC-12, a single-engine turboprop aircraft and has delivered 1,800 as of April 2021. In the 2000s, it also introduced a new member family of its military training ai ...
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PZL TS-8 Bies
The PZL TS-8 ''Bies'' (Devil) is a Polish trainer aircraft, used from 1957 to the 1970s by the Polish Air Force and civilian aviation. Development The aircraft was designed in response to a Polish Air Force requirement for a modern piston-engined trainer with a retractable tricycle landing gear to replace Junak 3 and Yak-11 aircraft. The main designer was Tadeusz Sołtyk – hence the designation letters TS. The plane was named ''Bies'' – a folk name for the devil. Work started in 1953 and the first prototype was flown on July 23, 1955. In 1956 and 1957 it beat three international records in its class.World records of height 7084.5 m in C-Ic class (weight 1000–1750 kg), distance in a closed circuit 2884.5 km in C-Id class (weight 1750–3000 kg), speed 317 km/h in a closed circuit 2000 km in C-Ic class The second prototype was shown at the Paris Air Show in 1957. In 1957 the first experimental series of 10 aircraft was produced by WSK-Okecie (designated as TS-8 BI). A slig ...
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Beechcraft T-34 Mentor
The Beechcraft T-34 Mentor is an American propeller-driven, single-engined, military trainer aircraft derived from the Beechcraft Model 35 Bonanza. The earlier versions of the T-34, dating from around the late 1940s to the 1950s, were piston-engined. These were eventually succeeded by the upgraded T-34C Turbo-Mentor, powered by a turboprop engine. The T-34 remains in service more than seven decades after it was first designed. Design and development The T-34 was the brainchild of Walter Beech, who developed it as the Beechcraft Model 45 private venture at a time when there was no defense budget for a new trainer model. Beech hoped to sell it as an economical alternative to the North American T-6/SNJ Texan, then in use by all services of the U.S. military. Three initial design concepts were developed for the Model 45, including one with the Bonanza's signature V-tail, but the final design that emerged in 1948 incorporated conventional tail control surfaces for the benefit ...
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Pilatus PC-9
The Pilatus PC-9 is a single-engine, low-wing tandem-seat turboprop training aircraft manufactured by Pilatus Aircraft of Switzerland. Designed as a more powerful evolution of the Pilatus PC-7, the PC-9's first flight was made in May 1984 after which certification was achieved in September 1985. After this, the first production orders for the type were received from the Royal Saudi Air Force, with deliveries commencing in 1985. Since then, more than 250 airframes have been produced across five different variants and the type is employed by a number of military and civilian operators around the world, including the Swiss Air Force, the Croatian Air Force, and the Royal Thai Air Force. Design and development The PC-9 is a more powerful evolution of the PC-7. It retains the overall layout of its predecessor, but it has very little structural commonality with it. Amongst other improvements, the PC-9 features a larger cockpit with stepped ejection seats and also has a ventral airb ...
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Hartzell Propeller
Hartzell Propeller is an American manufacturer that was founded in 1917 by Robert N. Hartzell as the Hartzell Walnut Propeller Company. It produces composite and aluminum propellers for certified, homebuilt, and ultralight aircraft. The company is headquartered in Piqua, Ohio.Purdy, Don: ''AeroCrafter - Homebuilt Aircraft Sourcebook'', page 84. BAI Communications. Hartzell also produces spinners, governors, ice protection systems, and other propeller controls. History Robert Hartzell grew up in the village of Oakwood, Ohio, just a block from Hawthorn Hill, where Orville Wright lived. From the 1890s until the late 1910s, Hartzell's father and grandfather operated a sawmill and lumber supply company in Greenville, Ohio (later moved to Piqua, Ohio) that also manufactured items such as wagons and gun stocks for World War I. On the side, Robert owned a small airplane and did maintenance on it as a young man. In 1917, Orville Wright suggested that Hartzell use his walnut tr ...
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Piston Engine
A reciprocating engine, also often known as a piston engine, is typically a heat engine that uses one or more reciprocating pistons to convert high temperature and high pressure into a rotating motion. This article describes the common features of all types. The main types are: the internal combustion engine, used extensively in motor vehicles; the steam engine, the mainstay of the Industrial Revolution; and the Stirling engine for niche applications. Internal combustion engines are further classified in two ways: either a spark-ignition (SI) engine, where the spark plug initiates the combustion; or a compression-ignition (CI) engine, where the air within the cylinder is compressed, thus heating it, so that the heated air ignites fuel that is injected then or earlier.''Thermodynamics: An Engineering Approach'' by Yunus A. Cengal and Michael A. Boles Common features in all types There may be one or more pistons. Each piston is inside a cylinder, into which a gas is intro ...
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Horizontally Opposed
A flat engine is a piston engine where the cylinders are located on either side of a central crankshaft. Flat engines are also known as horizontally opposed engines, however this is distinct from the less common opposed-piston engine design, whereby each cylinder has two pistons sharing a central combustion chamber. The most common configuration of flat engines is the boxer engine configuration, in which the pistons of each opposed pair of cylinders move inwards and outwards at the same time. The other configuration is effectively a V engine with a 180-degree angle between the cylinder banks; in this configuration each pair of cylinders shares a single crankpin, so that as one piston moves inward, the other moves outward. The first flat engine was built in 1897 by Karl Benz. Flat engines have been used in aviation, motorcycle and automobile applications. They are now less common in cars than straight engines (for engines with less than six cylinders) and V engines (for engines ...
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Lycoming GO-435-C2-A2
The Lycoming O-435 is an American six-cylinder, horizontally opposed fixed-wing aircraft and helicopter engine made by Lycoming Engines. The engine is a six-cylinder version of the four-cylinder Lycoming O-290. Design and development The powerplant is a horizontally opposed Lycoming six-cylinder design. It is a direct-drive or geared, air-cooled, and normally aspirated engine. The cylinders have steel barrels with aluminum heads, and the valves are operated by hydraulic lifters. The crankshaft is supported in an aluminum-alloy split case by four main bearings and one ball-thrust bearing, and lubricating oil is supplied from a 12 quart wet sump. The camshaft rides in journals that do not employ bearing inserts. The accessory housing supports two magnetos, a starter, a generator, and a dual tach drive. A spare mounting pad is included for a vacuum pump. Variants All engines have an additional prefix preceding the ''435'' to indicate the specific configuration of the engine. Ther ...
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