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Hurel-Dubois HD.10
The Hurel-Dubois HD.10 was a French research aircraft first flown in 1948 to investigate Maurice Hurel's ideas about high aspect ratio wings. It was a single-seat monoplane with retractable tricycle undercarriage and twin tails, featuring a very high aspect-ratio wing of 32.5:1. This was mounted above the aircraft's enclosed cockpit and braced with struts. Construction was of metal throughout. Between 1948 and 1954, this aircraft accumulated some 218 hours 27 minutes of flight time and is now preserved in the '' Musée de l'Air et de l'Espace'' in Paris. Design and development The French aircraft designer Maurice Hurel set up the Société des Avions Hurel-Dubois, with the industrialist Léon-Joseph Dubois, in November 1947, to develop Hurel's theories about the use of high aspect ratio wings. To demonstrate the practicality of these ideas, Hurel designed a single-engined prototype, the HD.10, with construction entrusted to the Établissements Pierre Levasseur. The HD.10 was ... [...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] |
Tricycle Landing Gear
Tricycle gear is a type of aircraft undercarriage, or ''landing gear'', arranged in a tricycle fashion. The tricycle arrangement has a single nose wheel in the front, and two or more main wheels slightly aft of the center of gravity. Tricycle gear aircraft are the easiest for takeoff, landing and taxiing, and consequently the configuration is the most widely used on aircraft.Crane, Dale: ''Dictionary of Aeronautical Terms, third edition'', page 524. Aviation Supplies & Academics, 1997. Aviation Publishers Co. Limited, ''From the Ground Up'', page 11 (27th revised edition) History Several early aircraft had primitive tricycle gear, notably very early Antoinette planes and the Curtiss Pushers of the pre-World War I Pioneer Era of aviation. Waldo Waterman's 1929 tailless '' Whatsit'' was one of the first to have a steerable nose wheel. In 1956, Cessna introduced sprung-steel tricycle landing gear on the Cessna 172. Their marketing department described this as "Land-O-Matic" t ... [...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] |
1940s French Experimental Aircraft
Year 194 ( CXCIV) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Septimius and Septimius (or, less frequently, year 947 ''Ab urbe condita''). The denomination 194 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 and Decimus Clodius Septimius Albinus Caesar become Roman Consuls. * Battle of Issus: Septimius Severus marches with his army (12 legions) to Cilicia, and defeats Pescennius Niger, Roman governor of Syria. Pescennius retreats to Antioch, and is executed by Severus' troops. * Septimius Severus besieges Byzantium (194–196); the city walls suffer extensive damage. Asia * Battle of Yan Province: Warlords Cao Cao and Lü Bu fight for control over Yan Province; the battle lasts for over 100 days ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aeroplane Monthly
''Aeroplane'' (formerly ''Aeroplane Monthly'') is a British magazine devoted to aviation, with a focus on aviation history and preservation. __TOC__ ''The Aeroplane'' The weekly ''The Aeroplane'' launched in June 1911 under founding editor C. G. Grey with Victor Sassoon. Grey remained editor until November 1939. ''Aeroplane Monthly'' Issue 1 of ''Aeroplane Monthly'' was published in May 1973 at a cover price of 30p, in association with ''Flight International'', by IPC Media. The founder was Richard T. Riding (1942-2019), whose father, E.J. Riding, had been photographer for ''The Aeroplane'' magazine of the 1940s. The magazine is now owned by Key Publishing Ltd and headquartered in Stamford, Lincolnshire. The magazine is the successor to an earlier, weekly publication called ''The Aeroplane'', founded in 1911. See also *''Flight International ''Flight International'' is a monthly magazine focused on aerospace. Published in the United Kingdom and founded in 1909 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flat Four
A flat-four engine, also known as a horizontally opposed-four engine, is a four-cylinder piston engine with two banks of cylinders lying on opposite sides of a common crankshaft. The most common type of flat-four engine is the boxer-four engine, each pair of opposed pistons moves inwards and outwards at the same time. A boxer-four engine has perfect primary and secondary balance, however, the two cylinder heads means the design is more expensive to produce than an inline-four engine. Boxer-four engines have been used in cars since 1897, especially by Volkswagen and Subaru. They have also occasionally been used in motorcycles and frequently in aircraft. Cessna and Piper use flat four engines from Lycoming and Continental in the most common civil aircraft in the world - the Cessna 172, and Piper Cherokee, while many ultralight and LSA planes use versions of the Rotax 912. Design Most flat-four engines are designed so that each pair of opposing pistons moves inwards and outw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paris–Le Bourget Airport
Paris–Le Bourget Airport (french: link=no, Aéroport de Paris-Le Bourget) is an airport located within portions of the communes of Le Bourget, Bonneuil-en-France, Dugny and Gonesse, north-northeast of Paris, France. Once Paris's principal airport, it is now used only for general aviation, including business jet operations. It also hosts air shows, most notably the Paris Air Show. The airport is operated by Groupe ADP under the brand Paris Aéroport. History The airport started commercial operations in 1919 and was Paris's only airport until the construction of Orly Airport in 1932. It is famous as the landing site for Charles Lindbergh's historic solo transatlantic crossing in 1927 in the ''Spirit of St. Louis'', and had been the departure point two weeks earlier for the French biplane ''L'Oiseau Blanc (The White Bird)'', which took off in an attempt at a transatlantic flight, but then mysteriously disappeared.Godspeed, Charles and Francois"The Secret of The White Bird." ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Centre D'Essais En Vol
Center or centre may refer to: Mathematics * Center (geometry), the middle of an object * Center (algebra), used in various contexts ** Center (group theory) ** Center (ring theory) * Graph center, the set of all vertices of minimum eccentricity Places United States * Centre, Alabama * Center, Colorado * Center, Georgia * Center, Indiana * Center, Jay County, Indiana * Center, Warrick County, Indiana * Center, Kentucky * Center, Missouri * Center, Nebraska * Center, North Dakota * Centre County, Pennsylvania * Center, Portland, Oregon * Center, Texas * Center, Washington * Center, Outagamie County, Wisconsin * Center, Rock County, Wisconsin **Center (community), Wisconsin *Center Township (other) *Centre Township (other) *Centre Avenue (other) *Center Hill (other) Other countries * Centre region, Hainaut, Belgium * Centre Region, Burkina Faso * Centre Region (Cameroon) * Centre-Val de Loire, formerly Centre, France * Centre (department ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Praga D
The Praga Hostivař D was a four-cylinder, air-cooled, horizontally opposed aircraft engine first produced in Czechoslovakia in 1936 but which enjoyed its greatest success after World War II due to the explosion in popularity of sports flying. A version for helicopters was produced post World War II as the Praga DH Applications *Mráz M-2 Skaut *Aero XE-II * IFIL-Reghin RG-6 __NOTOC__ The IFIL-Reghin RG-6 was a light aircraft built in Romania in 1957 for aeroclub use.Taylor 1989, 577 It was designed by Vladimir Novichi at the request of the national sport flying association AVSAP, which specified the use of the Pra ... (1957) Specifications (Praga D) See also References * Further reading * {{cite book , title=Jane's all the World's Aircraft 1947 , editor1-last=Bridgman , editor1-first=Leonard , year=1947 , publisher=Sampson Low, Marston & Co , location=London , page=37d Boxer engines 1930s aircraft piston engines ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mathis (automobile)
Mathis S.A. was an automobile manufacturer in Alsace that produced cars between 1910 and 1950. Founder Émile Mathis (1880–1956) was born in Strasbourg and died in Geneva. Hermès-Simplex Émile Mathis was a leading car dealer in Strasbourg, Alsace, handling Fiat, De Dietrich and Panhard, Panhard-Levassor, among other makes from his Auto-Mathis-Palace. Two models were designed for him by the young Ettore Bugatti. Made at his Illkirch-Graffenstaden, Graffenstaden factory he marketed them under the brand Hermes with 28, 40, or 98 hp engines. They were Mercedes (marque), Mercedes-like cars with chain drives. Designer and racing-driver Dragutin Esser then created two cars of 2025 cc and 2253 cc which were built under license from Stoewer. Mathis The Mathis ''8/20 PS'' was first offered in 1910 but the first real success came just before World War I with two smaller models: ''Babylette'' had a 1.1 L engine and ''Baby'' had a 1.3 L engine. There was also a S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
