-
1 Junkers, Hugo
SUBJECT AREA: Aerospace[br]b. 3 February 1859 Rheydt, Germanyd. 3 February 1935 Munich, Germany[br]German aircraft designer, pioneer of all-metal aircraft, including the world's first real airliner.[br]Hugo Junkers trained as an engineer and in 1895 founded the Junkers Company, which manufactured metal products including gas-powered hot-water heaters. He was also Professor of Thermodynamics at the high school in Aachen. The visits to Europe by the Wright brothers in 1908 and 1909 aroused his interest in flight, and in 1910 he was granted a patent for a flying wing, i.e. no fuselage and a thick wing which did not require external bracing wires. Using his sheet-metal experience he built the more conventional Junkers J 1 entirely of iron and steel. It made its first flight in December 1915 but was rather heavy and slow, so Junkers turned to the newly available aluminium alloys and built the J 4 bi-plane, which entered service in 1917. To stiffen the thin aluminium-alloy skins, Junkers used corrugations running fore and aft, a feature of his aircraft for the next twenty years. Incidentally, in 1917 the German authorities persuaded Junkers and Fokker to merge, but the Junkers-Fokker Company was short-lived.After the First World War Junkers very rapidly converted to commercial aviation, and in 1919 he produced a single-engined low-wing monoplane capable of carrying four passengers in an enclosed cabin. The robust all-metal F 13 is generally accepted as being the world's first airliner and over three hundred were built and used worldwide: some were still in service eighteen years later. A series of low-wing transport aircraft followed, of which the best known is the Ju 52. The original version had a single engine and first flew in 1930; a three-engined version flew in 1932 and was known as the Ju 52/3m. This was used by many airlines and served with the Luftwaffe throughout the Second World War, with almost five thousand being built.Junkers was always ready to try new ideas, such as a flap set aft of the trailing edge of the wing that became known as the "Junkers flap". In 1923 he founded a company to design and manufacture stationary diesel engines and aircraft petrol engines. Work commenced on a diesel aero-engine: this flew in 1929 and a successful range of engines followed later. Probably the most spectacular of Junkers's designs was his G 38 airliner of 1929. This was the world's largest land-plane at the time, with a wing span of 44 m (144 ft). The wing was so thick that some of the thirty-four passengers could sit in the wing and look out through windows in the leading edge. Two were built and were frequently seen on European routes.[br]Bibliography1923, "Metal aircraft construction", Journal of the Royal Aeronautical Society, London.Further ReadingG.Schmitt, 1988, Hugh Junkers and His Aircraft, Berlin.1990, Jane's Fighting Aircraft of World War I, London: Jane's (provides details of Junkers's aircraft).J.Stroud, 1966, European Transport Aircraft since 1910, London.P. St J.Turner and H.J.Nowarra, 1971, Junkers: An Aircraft Album, London.JDS
См. также в других словарях:
Aircraft engine — An aircraft engine is a propulsion system for an aircraft. Aircraft engines are almost always a type of lightweight internal combustion engine. This article is an overview of the basic types of aircraft engines and the design concepts employed in … Wikipedia
Aircraft of the Battle of Britain — The Battle of Britain (German: [http://de.wikipedia.org/wiki/Luftschlacht um England Luftschlacht um England ] ) was an effort by the German Luftwaffe during during the summer and autumn, 1940 to gain air superiority over the United Kingdom in… … Wikipedia
Rotary engine — The rotary engine was an early type of internal combustion aircraft engine in which the crankshaft remains stationary and the entire cylinder block revolves around it. The design was used mostly in the years shortly before and during World War I… … Wikipedia
Clerget aircraft engines — Preserved Clerget 9B rotary engine on display at the Pima Air Space Museum Clerget was the name given to a series of early rotary aircraft engine types of the World War I era that were designed by Pierre Clerget. Manufactured in both France by … Wikipedia
V6 engine — A V6 engine is a V engine with six cylinders mounted on the crankcase in two banks of three cylinders, usually set at either a right angle or an acute angle to each other, with all six pistons driving a common crankshaft. It is the second most… … Wikipedia
Chrysler Hemi engine — For an overview of Hemi engines in general, see Hemi engine. Early Hemi in a 1957 Chrysler 300C. The Chrysler Hemi engine, known by the trademark Hemi, is a series of V8 engines built by Chrysler with a hemispherical combustion chamber. Three… … Wikipedia
Flathead engine — A flathead engine or sidevalve engine (sometimes called a flatty) is an internal combustion engine with valves placed in the engine block beside the piston, instead of in the cylinder head, as in an overhead valve engine. The design was common on … Wikipedia
Aluminium alloy — Aluminium alloys are alloys of aluminium, often with copper, zinc, manganese, silicon, or magnesium. They are much lighter and more corrosion resistant than plain carbon steel, but not quite as corrosion resistant as pure aluminium. Bare… … Wikipedia
Chevrolet Corvair engine — Corvair engine Manufacturer Chevrolet Displacement 140 CID (2.3L), 145 CID (2.4L), 164 CID (2.7L) Cylinder block alloy … Wikipedia
Shape-memory alloy — A shape memory alloy (SMA, smart metal, memory metal, memory alloy, muscle wire, smart alloy) is an alloy that remembers its original, cold forged shape: returning the pre deformed shape by heating. This material is a lightweight, solid state… … Wikipedia
Shape memory alloy — A shape memory alloy (SMA, also known as a smart alloy, memory metal, or muscle wire) is an alloy that remembers its shape, and can be returned to that shape after being deformed, by applying heat to the alloy. When the shape memory effect is… … Wikipedia
