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Alfa Romeo 122
The Alfa Romeo 122 was a 12-cylinder inverted-V aircraft engine produced in 1941 by Alfa Romeo Milano as a licence-built Czechoslovakian Walter Sagitta The Walter Sagitta was a Czechoslovakian, air-cooled, inverted V-12 engine that first ran in 1937. This was one of several smaller, low-mass medium power pre-war V-12 engines produced. With a displacement of 18.4 liters (1,123 cu in), it produc ..., featuring a single-speed supercharger. The 122 R.C.38 major production variant had a reduction gearbox, single stage super-charger and rated altitude of . Specifications See also Notes Bibliography *Archivio Storico Alfa Romeo - Volume II. Torino, novembre 1998. External links {{Alfa Romeo aeroengines Air-cooled aircraft piston engines 122 1930s aircraft piston engines Inverted aircraft piston engines ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Piston
A piston is a component of reciprocating engines, reciprocating pumps, gas compressors, hydraulic cylinders and pneumatic cylinders, among other similar mechanisms. It is the moving component that is contained by a cylinder and is made gas-tight by piston rings. In an engine, its purpose is to transfer force from expanding gas in the cylinder to the crankshaft via a piston rod and/or connecting rod. In a pump, the function is reversed and force is transferred from the crankshaft to the piston for the purpose of compressing or ejecting the fluid in the cylinder. In some engines, the piston also acts as a valve by covering and uncovering ports in the cylinder. __TOC__ Piston engines Internal combustion engines An internal combustion engine is acted upon by the pressure of the expanding combustion gases in the combustion chamber space at the top of the cylinder. This force then acts downwards through the connecting rod and onto the crankshaft. The connecting rod is att ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
De Havilland Gipsy Twelve
The de Havilland Gipsy Twelve was a British aero engine developed by the de Havilland Engine Company in 1937. Approximately 95 were manufactured. It was known as the Gipsy King in Royal Air Force service. Applications * de Havilland Albatross, de Havilland DH.91 Albatross * de Havilland Don, de Havilland DH.93 Don Engines on display Preserved de Havilland Gipsy Twelve engines are on public display at the following museums: *de Havilland Aircraft Museum *Science Museum, London, London Science Museum. Specifications (Gipsy King I) See also References Notes Bibliography * Lumsden, Alec. ''British Piston Engines and their Aircraft''. Marlborough, Wiltshire: Airlife Publishing, 2003. . External links Photo of a de Havilland Gipsy Twelve at Enginehistory.org {{DHaeroengines Aircraft air-cooled V piston engines 1930s aircraft piston engines De Havilland aircraft engines, Gipsy Twelve Inverted V12 aircraft engines ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Air-cooled Aircraft Piston Engines
Air-cooled engines rely on the circulation of air directly over heat dissipation fins or hot areas of the engine to cool them in order to keep the engine within operating temperatures. In all combustion engines, a great percentage of the heat generated (around 44%) escapes through the exhaust, not through the metal fins of an air-cooled engine (12%). About 8% of the heat energy is transferred to the oil, which although primarily meant for lubrication, also plays a role in heat dissipation via a cooler. ''Air-cooled engines'' are used generally in applications which would not suit liquid cooling, as such modern air-cooled engines are used in motorcycles, general aviation aircraft, lawn mowers, generators, outboard motors, pump sets, saw benches and auxiliary power units. Introduction Most modern internal combustion engines are cooled by a closed circuit carrying liquid coolant through channels in the engine block and cylinder head, where the coolant absorbs heat, to a heat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Renault 12R
The Renault 12R was an air-cooled inverted V12 aircraft engine developed by the French engineering company Renault in the 1930s. The design was based on mounting two 6Q six-cylinder engines on a single crankshaft. In production, the engine was rated between , although a high performance version built for the sole Caudron C.712 racing special produced . More than one third of production went to power the Caudron C.714 light fighter that fought in the early stages of World War II for the French and Polish Air Forces. Design and development The 12R was developed by Renault in the 1930s. The design was derived from the successful Renault Bengali, using the same construction techniques and being of essentially steel construction. It was based on the 4.46, a test engine developed by mounting two 6Q six-cylinder engines on the same crankshaft. The engine retained the bore and stroke of the smaller engine. The cylinders and pistons were made of forged steel and connected in pairs to a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ranger V-770
The Ranger V-770 was an American air-cooled inverted V12 engine, V-12 aircraft engine developed by the Ranger/Fairchild Engines, Ranger Aircraft Engine Division of the Fairchild Aircraft, Fairchild Engine & Aircraft Corporation in the early 1930s. Design and development In 1931, the V-770 design was built, derived from the Ranger L-440, Ranger 6-440 series of inverted inline air-cooled engines, and test flown in the Vought XSO2U-1 Scout. In 1938 it was tested in the Curtiss SO3C Seamew but was found to be unreliable with a tendency to overheat in low-speed flight, but would still be the most produced aircraft to have the V-770, with 795 being built. By 1941 a more developed V-770 was installed in the Fairchild XAT-14 Gunner prototype gunnery school aircraft, which went into limited production as the Fairchild AT-21, Fairchild AT-21 Gunner, of which 174 were built, not including one radial engine prototype. Produced from 1941 to 1945, the V-770 featured a two-piece aluminum alloy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Junkers Jumo 210
The Jumo 210 was Junkers Motoren's first production inverted V12 gasoline aircraft engine, first produced in the early 1930s. Depending on the version it produced between 610 and 730 PS and can be considered a counterpart of the Rolls-Royce Kestrel in many ways. Although originally intended to be used in almost all pre-war designs, rapid progress in aircraft design quickly relegated it to the small end of the power scale by the late 1930s. Almost all aircraft designs switched to the much larger Daimler-Benz DB 600, so the 210 was produced only for a short time before Junkers responded with a larger engine of their own, the Junkers Jumo 211. Design and development The first gasoline-burning aviation power plants that the Junkers Motorenwerke ever built were the L1 and L2 single overhead camshaft (SOHC) liquid-cooled inline-six aviation engines of the early and mid-1920s. Development of this line led up through the L8. All of these were developments of the BMW IIIa inline-six S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isotta Fraschini Gamma
The Isotta Fraschini Gamma was an air cooled aircraft engine developed by the Italian engineering company Isotta Fraschini in the 1930s. It was an inverted V12 rated at over . Produced in small numbers for one-off aircraft, including the Ambrosini SAI.107 and Caproni Vizzola F.5 Gamma fighter trainer prototypes, it was developed into the more powerful and more numerous Delta. Design and development The Gamma was an air cooled inverted V engine with 12 cylinders arranged in two banks, each cylinder of bore and stroke . Isotta Fraschini produced the Gamma in small numbers during World War II at a rating of about . The engine formed the basis for a number of other aircraft engines produced by the company. The more powerful Delta was developed as a larger complement to the Gamma. While the Beta straight-six engine was essentially one half of the engine, the Zeta mated two Gamma engines to a common crankshaft to create an X24 engine. The larger engines shared with the Gamma a prob ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Argus As 411
The Argus 411 was a twelve-cylinder, air-cooled, inverted-V12 aircraft engine developed by Argus Motoren in Germany during World War II. Design and development The As 411 was a refined and more powerful version of the Argus As 410. Most 411 production was undertaken by Renault in occupied Paris, these engines were used to power the Siebel Si 204 and the post war Dassault MD 315 Flamant. It developed 600 PS (592 hp, 441 kW) at 3,300 rpm Following the end of World War II, Renault continued to manufacture the engine as the Renault 12S. After merging the French aircraft engine manufacturers into SNECMA in 1945, production continued under the new designation SNECMA 12S. Variants ;As 411: A refined and more powerful version of the Argus As 410. ;Renault 12S: Production of the As 411 after World War II in France. ;SNECMA 12S: (a.k.a. SNECMA Renault 12S) Designation change on the formation of SNECMA. ;SNECMA 12T: (a.k.a. SNECMA Renault 12T) Refined version of the 12S with new ... [...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] |
Argus As 410
The Argus As 410 was a German air-cooled inverted V-12 light aircraft engine that was first produced by Argus Motoren in 1938. Design and development The engine marked a departure from earlier Argus engines in that it had new construction techniques which gave the engine greater operating speeds and power. The engine featured smaller 105 mm x 115 mm cylinders with deep finned steel cooling slots, aluminum heads, geared supercharger, a steel alloy crankshaft and a magnesium alloy crankcase. The engine weighed approximately 315 kg and produced 465 PS (459 hp, 342 kW) at 3,100 rpm. Approximately 28,700 engines were produced. A distinctive feature is the finned spinner ahead of the propeller. This is driven by the airflow as a windmill, and used to power the actuator of the variable-pitch propeller. The more powerful and refined Argus As 411 was developed from it. Applications *Arado Ar 96 *Argus Fernfeuer *Focke-Wulf Fw 189 * Henschel Hs 129A *Pilatus P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
