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Ellingston Special
The Ellingston Special was a variable-geometry aircraft, designed by Cornwallis "Con" Ellingston of Great Falls, Montana Great Falls is the third most populous city in the U.S. state of Montana and the county seat of Cascade County. The population was 60,442 according to the 2020 census. The city covers an area of and is the principal city of the Great Falls, M ... in the late 1930s. Background Ellingston, together with Earle Hansen, constructed the aircraft, with Hansen making the maiden flight on April 23, 1938. It was a single-seat low-wing monoplane, fitted with a retractable undercarriage, and was powered by a LeBlond 90-7D radial engine, fitted with a two-bladed tractor propeller. The primary structure was constructed from 4130 chromoly steel tubing. The aircraft's most notable feature was its telescopic wings, which could vary in span between and , with it being possible to vary the wingspan while in flight. The maximum speed of the aircraft varied from ... [...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 Wikimedia project, 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 Magazine, 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 organization ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Makhonine Mak-10
The Makhonine Mak-10, was a Wing configuration#Variable geometry, variable-geometry research aircraft, built to investigate variable area / telescopic wings during 1931 in France. Design and development In the early 1930s several designers became interested in the possibility of changing the configuration of wings between take off and fast flight. Two routes were explored, the first primarily involving camber (aerodynamics), camber and hence lift coefficient reduction and the other a decrease of wing area by span reduction at high speed. The Schmeidler variable wing and that of the Gloster Aircraft Company, Gloster built Antoni-Breda Ba.15 were examples of the first group and the Makhonine Mak-10 of the second. Details of the Mak-10 are sparse but its novel feature was a telescopic wing which increased the span for take-off by or 60% of its high speed configuration. The outer panels retracted into the central ones, their inner ends supported on bearings rolling along one or ... [...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 slowe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1930s United States Experimental Aircraft
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 o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stemal III
The Stemal III was a parasol wing test bed for a wing with variable camber, intended to increase the speed range of aircraft and to lower landing speeds. It was based on a Nieuport 80. Design and development Stefan Malinowski's several aircraft designs were all named Stemal, the first syllables of his names joined together. The Stemal III was a test-bed for his ideas for extending the speed range of aircraft using variable camber wings, which he had begun to develop at the beginning of World War I whilst studying the Gustave Eiffel wind tunnel results on the lift generated by cambered aerofoil sections. His first experiments were with a modified Caudron wing but the external mechanism he used increased the drag unacceptably. Instead, he developed a wing with ribs which were flexible aft of the main, forward, spar together with an internal, rear spar, cam-based mechanism to bend them. Malinkowski then took the device though aerodynamic tests in wind tunnels in Italy a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schmeidler SN
Schmeidler is a surname. Notable people with the surname include: * David Schmeidler (1939–2022), Israeli mathematician and economic theorist * Rachel Schmeidler, American artist See also * 22348 Schmeidler, a main-belt asteroid * Schweidler {{surname ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nikitin-Shevchenko IS
The Nikitin-Schyevchyenko IS series, (''Istrebitel Skladnoi'' – folding fighter), were single seat polymorphic fighters designed and produced in the USSR from 1938. Development Nikitin's test pilot, Vladimir Vasiloyevich Schyevchyenko, investigated the practicality of a biplane fighter with a folding lower wing which retracted into the upper wing. The intention being to combine the short field length and climb capabilities of the biplane with the speed of the monoplane fighter. Assisted by Nikitin in his investigation, Schyevchyenko built a scale model at MAT in 1939. Later in 1939 OKB-30 were tasked with the design and manufacture of the full-scale IS, which was completed by 6 November 1940. The fuselage forward of the cockpit, wing spar booms and the combined lower inner wing and undercarriage assemblies were built up from welded 30KhGSA steel tubing, whilst the rest of the airframe was constructed from D16 duralumin throughout except for fabric covering on the con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
41xx Steel
41xx steel is a family of SAE steel grades, as specified by the Society of Automotive Engineers (SAE). Alloying elements include chromium and molybdenum, and as a result these materials are often informally referred to as chromoly steel (common variant stylings include ''chrome-moly'', ''cro-moly'', ''CrMo'', ''CRMO'', ''CR-MOLY'', and similar). They have an excellent strength to weight ratio and are considerably stronger and harder than standard 1020 steel, but are not easily welded, requiring thermal treatment both before and after welding to avoid cold cracking. While these grades of steel do contain chromium, it is not in great enough quantities to provide the corrosion resistance found in stainless steel. Examples of applications for 4130, 4140 and 4145 include structural tubing, bicycle frames, gas bottles for transportation of pressurized gases, firearm parts, clutch and flywheel components, and roll cages. 4150 stands out as being one of the steels accepted for use i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WikiProject Aircraft/page Content
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 Magazine, 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
LeBlond Radial Engines
The LeBlond radial engines, later produced under the name Ken-Royce, were a family of 3-cylinder, 5-cylinder and 7-cylinder, air-cooled radial engines for aircraft, built in the 1930s by the LeBlond Aircraft Engine Corporation until the operation was sold to Rearwin Airplanes in 1937 and renamed Ken-Royce Engines. Products ;LeBlond 40-3:3-cylinder air-cooled radial engine. ;LeBlond 60-5D :Introduced in 1928, the 60-5D was a 60 hp (45 kw) 5-cylinder, air-cooled, radial piston engine with a displacement of 234 cuin (3.8 L)."LeBlond Engines aero engines: LeBlond 5D." PilotFriend. N.p., n.d. Web. 20 June 2010. . This model used iron cylinder heads"Rearwin Aircraft Engines." PilotFriend. N.p., n.d. Web. 20 June 2010. . and was a direct development of the Detroit Air-Cat. ;LeBlond 70-5DE :Introduced in 1930, the 70-5F was a 70 hp (52 kw) at 1,950 rpm 5-cylinder, air-cooled, radial piston engine, (4.125 x 3.75 = 250.57 cuin (4.11 L)), using iron cylinder heads and two bearin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landing Gear
Landing gear is the undercarriage of an aircraft or spacecraft that is used for takeoff or landing. For aircraft it is generally needed for both. It was also formerly called ''alighting gear'' by some manufacturers, such as the Glenn L. Martin Company. For aircraft, Stinton makes the terminology distinction ''undercarriage (British) = landing gear (US)''. For aircraft, the landing gear supports the craft when it is not flying, allowing it to take off, land, and taxi without damage. Wheeled landing gear is the most common, with skis or floats needed to operate from snow/ice/water and skids for vertical operation on land. Faster aircraft have retractable undercarriages, which fold away during flight to reduce drag. Some unusual landing gear have been evaluated experimentally. These include: no landing gear (to save weight), made possible by operating from a catapult cradle and flexible landing deck: air cushion (to enable operation over a wide range of ground obstacles and wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
