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Alcor Duo-4
The Alcor Duo-4 was a high wing cabin aircraft, unusually powered by a pair of four cylinder straight engines mounted horizontally either side of the nose. After an accident it was rebuilt with six cylinder engines, becoming the Alcor Duo-6. The name Alcor derived from ''A''llan ''L''ockheed ''Co''rporation. Design and development Apart from their engine cowlings the Duo-4 and the rebuilt Duo-6 had identical structures. They had ply-covered cantilever high wings which tapered outwards both in plan and thickness, built around two box spars. Their ailerons were inset. Both were powered by air-cooled Menasco engines within carefully streamlined cowlings. The Menascos were mounted horizontally, head to head, on the nose of the fuselage so their propeller shafts were much closer together than on most conventional twin-engined aircraft, producing handling generally nearer to that of a single-engined design. On the Duo-4 the tips of the two-bladed propellers could be as little as ap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WikiProject Aircraft
A WikiProject, or Wikiproject, is a Wikimedia movement affinity group for contributors with shared goals. WikiProjects are prevalent within the largest wiki, Wikipedia, and exist to varying degrees within sister projects such as Wiktionary, Wikiquote, Wikidata, and Wikisource. They also exist in different languages, and translation of articles is a form of their collaboration. During the COVID-19 pandemic, CBS News noted the role of Wikipedia's WikiProject Medicine in maintaining the accuracy of articles related to the disease. Another WikiProject that has drawn attention is WikiProject Women Scientists, which was profiled by '' Smithsonian'' for its efforts to improve coverage of women scientists which the profile noted had "helped increase the number of female scientists on Wikipedia from around 1,600 to over 5,000". On Wikipedia Some Wikipedia WikiProjects are substantial enough to engage in cooperative activities with outside organizations relevant to the field at issue. For e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Muroc Dry Lake
Rogers Dry Lake is an endorheic desert salt pan in the Mojave Desert of Kern County, California. The lake derives its name from the Anglicization from the Spanish name, Rodriguez Dry Lake. It is the central part of Edwards Air Force Base as its hard surface provides a natural extension to the paved runways. It was formerly known as Muroc Dry Lake. Geology Rogers Dry Lake is located in the Antelope Valley, about drive north of Los Angeles. It covers an area of about at the low point of the valley, forming a rough figure eight. It is the bed of a lake that formed roughly 2.5 million years ago, in the Pleistocene. It is long and wide at its greatest dimensions. The bed of the lake is unusually hard, capable of withstanding as much as 250 psi without cracking. This is sufficient to allow even the heaviest aircraft to land safely. During the extremely brief rainy season, standing water may be on the lakebed, pooling near the location of the region's lowest elevation (2,300 f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1930s United States Airliners
Year 193 ( CXCIII) was a common year starting on Monday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Sosius and Ericius (or, less frequently, year 946 ''Ab urbe condita''). The denomination 193 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 * January 1 – Year of the Five Emperors: The Roman Senate chooses Publius Helvius Pertinax, against his will, to succeed the late Commodus as Emperor. Pertinax is forced to reorganize the handling of finances, which were wrecked under Commodus, to reestablish discipline in the Roman army, and to suspend the food programs established by Trajan, provoking the ire of the Praetorian Guard. * March 28 – Pertinax is assassinated by members of the Praetorian Guard, who storm the imperial palace. The Empire is auctioned off ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
High-wing Aircraft
A monoplane is a fixed-wing aircraft configuration with a single mainplane, in contrast to a biplane or other types of multiplane (aeronautics), 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 (aeronautics), bracing can be used to improve structural efficiency, reducing weight and cost. For a wing of a given size, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Twin Piston-engined Tractor Aircraft
Twins are two offspring produced by the same pregnancy.MedicineNet > Definition of TwinLast Editorial Review: 19 June 2000 Twins can be either ''monozygotic'' ('identical'), meaning that they develop from one zygote, which splits and forms two embryos, or ''dizygotic'' ('non-identical' or 'fraternal'), meaning that each twin develops from a separate egg and each egg is fertilized by its own sperm cell. Since identical twins develop from one zygote, they will share the same sex, while fraternal twins may or may not. In rare cases twins can have the same mother and different fathers (heteropaternal superfecundation). In contrast, a fetus that develops alone in the womb (the much more common case, in humans) is called a ''singleton'', and the general term for one offspring of a multiple birth is a ''multiple''. Unrelated look-alikes whose resemblance parallels that of twins are referred to as doppelgängers. Statistics The human twin birth rate in the United States rose 76% from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Straight Six Engine
The straight-six engine (also referred to as an inline-six engine; abbreviated I6 or L6) is a piston engine with six cylinders arranged in a straight line along the crankshaft. A straight-six engine has perfect primary and secondary engine balance, resulting in fewer vibrations than other designs of six or less cylinders. Until the mid-20th century, the straight-six layout was the most common design for engines with six cylinders. However, V6 engines became more common from the 1960s and by the 2000s most straight-six engines had been replaced by V6 engines. An exception to this trend is BMW which has produced automotive straight-six engines from 1933 to the present day. Characteristics In terms of packaging, straight-six engines are almost always narrower than a V6 engine or V8 engine, but longer than straight-four engines, V6s, and most V8s. Straight-six engines are typically produced in displacements ranging from , however engines ranging in size from the Benelli 7 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Menasco C-6
The Menasco Buccaneer was a series of popular six-cylinder, air-cooled, in-line, inverted, aero-engines, that were manufactured by Menasco Motors Company for light general aviation and sport aircraft during the 1930s and 1940s. The six-cylinder Menasco engines had the name Buccaneer, while the four-cylinder engines had the name Pirate. The Menasco engines came in both supercharged and normally aspirated models. The supercharged models, with the ''S'' suffix added to their designation, had superior performance at higher altitudes with a relatively small increase in dimensions and weight. Variants ;Menasco A6 Buccaneer : ;Menasco B6 Buccaneer : ;Menasco B6S Buccaneer : ;Menasco C6 Buccaneer : ;Menasco C6S Super Buccaneer : ;Menasco D6 Super Buccaneer : Applications * Alcor C-6-1 Junior * Bellanca 28-92 * Brown B-2 Racer * Brown B-3 * Chester Goon * Crosby CR-4 * Fokker S.IX/2 * Folkerts SK-3 * Howard DGA-4 * Miles Mohawk * Miles Peregrine * Northrop Beta 3 * Northrop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alcor Duo-6
The Alcor Duo-4 was a high wing cabin aircraft, unusually powered by a pair of four cylinder straight engines mounted horizontally either side of the nose. After an accident it was rebuilt with six cylinder engines, becoming the Alcor Duo-6. The name Alcor derived from ''A''llan ''L''ockheed ''Co''rporation. Design and development Apart from their engine cowlings the Duo-4 and the rebuilt Duo-6 had identical structures. They had ply-covered cantilever high wings which tapered outwards both in plan and thickness, built around two box spars. Their ailerons were inset. Both were powered by air-cooled Menasco engines within carefully streamlined cowlings. The Menascos were mounted horizontally, head to head, on the nose of the fuselage so their propeller shafts were much closer together than on most conventional twin-engined aircraft, producing handling generally nearer to that of a single-engined design. On the Duo-4 the tips of the two-bladed propellers could be as little as apar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alcor C-6-1 Junior
The Alcor Junior was a small, six passenger, twin-engined airliner built in the U.S. and flown in 1938. As on Alcor's earlier Duo-4 and Duo-6, its inline engines were mounted horizontally to minimize their separation and drag. Only one was built; it was lost in a crash less than four months after its first flight. Design and development The C-6-1 was a low wing airliner of mixed wood and metal construction. Its wings were tapered in plan, ending in semi-elliptical tips, and were built around twin spars. Its ribs were steel tube girder structures in inner, high stress regions around engine and undercarriage attachment points but were spruce girders elsewhere. Wing covering was largely plywood, except close to fuel tanks where duralumin was used. The trailing edges carried hydraulically operated flaps and Frise ailerons. Though in the high wing Duo-4 and -6 the engines were mounted on the sides of the forward fuselage, the low wing of the C-6-1 enabled their attachment, c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wingover
A wingover (also called a wing-over-wing, crop-duster turn or box-canyon turn) is an aerobatic maneuver in which an airplane makes a steep climb, followed by a vertical flat-turn (the plane turns to its side, without rolling, similar to the way a car turns). The maneuver ends with a short dive as the plane gently levels out, flying in the opposite direction from which the maneuver began. Sequence and use The aircraft makes a tight, 180 degree change in heading while covering minimum horizontal distance. The maneuver begins by making roughly a quarter loop, bringing the plane up into a vertical or near-vertical climb, allowing the airspeed to drop. Before the airplane stalls (begins to fall) the pilot applies hard rudder input, bringing the plane into a sweeping, vertical flat-turn, during which the wing swings over the top of the turn toward the direction of the nose. Both the lowered airspeed and gravity provide assistance with the turn, similar to a stall turn (hammerhead t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
