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Drago Jovanović
Dragoljub Kosta Jovanovich (January 24, 1916 – November 12, 1983), also known under his pen name D. K. or "Gish" Jovanovich, was a Serbian-American helicopter designer, inventor, and pioneer in autogyro technology. Born in the Kingdom of Yugoslavia, he subsequently moved to the United States, living first in Philadelphia and later in southern California. Piasecki and HERC Jovanovich and Frank Kozloski founded the Helicopter Engineering Research Corporation (HERC) in Philadelphia, Pennsylvania in 1946. HERC was the predecessor of Jovair. Jovanovich and Kozloski previously worked for Piasecki Helicopter Corporation where Jovanovich's patented tandem rotary design was used on the Piasecki PV-3. The first helicopter they designed was the HERC JOV-3. This was first flown in 1948. They used the Boulevard Airport (formerly William Penn Airport) as their base. McCulloch In 1949 Jovanovich and Kozloski transferred to the McCulloch Aircraft Corporation, the new helicopter and aircra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
McCulloch YH-30
The McCulloch Model MC-4 was an American tandem-rotor helicopter and was the first helicopter developed by McCulloch Aircraft Corporation, a division of McCulloch Motors Corporation.Harding, Stephen ''U.S. Army Aircraft Since 1947'', Airlife Publishing, Ltd. 1990. It was evaluated by the United States Army as the YH-30 and the United States Navy as the XHUM-1. Design and development The MC-4 was a larger version of the earlier HERC JOV-3 tandem-rotor helicopter and was developed by the McCulloch Aircraft Corporation. The JOV-3 was developed by Jovanovich when he headed the Helicopter Engineering and Research Corporation. The JOV-3 first flew in 1948. In 1949, Jovanovich moved to the McCulloch Motors Corporation, where an enlarged helicopter, the MC-4, first flew in March 1951. It was followed by a similar MC-4C and three evaluation helicopters for the United States Army (as the YH-30). The MC-4C was slightly larger than the MC-4. When the MC-4C was certified in 1953, it was the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Del Mar DH-1 Whirlymite
Del, or nabla, is an operator used in mathematics (particularly in vector calculus) as a vector differential operator, usually represented by the nabla symbol ∇. When applied to a function defined on a one-dimensional domain, it denotes the standard derivative of the function as defined in calculus. When applied to a ''field'' (a function defined on a multi-dimensional domain), it may denote any one of three operations depending on the way it is applied: the gradient or (locally) steepest slope of a scalar field (or sometimes of a vector field, as in the Navier–Stokes equations); the divergence of a vector field; or the curl (rotation) of a vector field. Del is a very convenient mathematical notation for those three operations (gradient, divergence, and curl) that makes many equations easier to write and remember. The del symbol (or nabla) can be formally defined as a vector operator whose components are the corresponding partial derivative operators. As a vector operator, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1916 Births
Events Below, the events of the First World War have the "WWI" prefix. January * January 1 – The British Empire, British Royal Army Medical Corps carries out the first successful blood transfusion, using blood that has been stored and cooled. * January 9 – WWI: Gallipoli Campaign – The last British troops are evacuated from Gallipoli, as the Ottoman Empire prevails over a joint British and French operation to capture Constantinople. * January 10 – WWI: Erzurum Offensive – Russia defeats the Ottoman Empire. * January 12 – The Gilbert and Ellice Islands Colony, part of the British Empire, is established in modern-day Tuvalu and Kiribati. * January 13 – WWI: Battle of Wadi (1916), Battle of Wadi – Ottoman Empire forces defeat the British, during the Mesopotamian campaign in modern-day Iraq. * January 29 – WWI: Paris is bombed by German Empire, German zeppelins. * January 31 – WWI: An attack is planned on Verdun, France. Febru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American People Of Serbian Descent
American(s) may refer to: * American, something of, from, or related to the United States of America, commonly known as the "United States" or "America" ** Americans, citizens and nationals of the United States of America ** American ancestry, people who self-identify their ancestry as "American" ** American English, the set of varieties of the English language native to the United States ** Native Americans in the United States, indigenous peoples of the United States * American, something of, from, or related to the Americas, also known as "America" ** Indigenous peoples of the Americas * American (word), for analysis and history of the meanings in various contexts Organizations * American Airlines, U.S.-based airline headquartered in Fort Worth, Texas * American Athletic Conference, an American college athletic conference * American Recordings (record label), a record label that was previously known as Def American * American University, in Washington, D.C. Sports teams S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yugoslav Emigrants To The United States
Yugoslav or Yugoslavian may refer to: * Yugoslavia, or any of the three historic states carrying that name: ** Kingdom of Yugoslavia, a European monarchy which existed 1918–1945 (officially called "Kingdom of Serbs, Croats and Slovenes" 1918–1929) ** Socialist Federal Republic of Yugoslavia or SFR Yugoslavia, a federal republic which succeeded the monarchy and existed 1945–1992 ** Federal Republic of Yugoslavia, or FR Yugoslavia, a new federal state formed by two successor republics of SFR Yugoslavia established in 1992 and renamed "Serbia and Montenegro" in 2003 before its dissolution in 2006 * Yugoslavs, either as citizens of the former Yugoslavia, or people who self-identify as ethnic Yugoslavs * Bosnian-Croatian-Serbian language, with "Yugoslav" proposed in 1861 and rejected as the legal name of the language by a decree of the Austrian Empire People * Jugoslav Dobričanin (born 1956), Serbian politician * Jugoslav Lazić (born 1979), Serbian former professional football ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert P
The name Robert is an ancient Germanic given name, from Proto-Germanic "fame" and "bright" (''Hrōþiberhtaz''). Compare Old Dutch ''Robrecht'' and Old High German ''Hrodebert'' (a compound of '' Hruod'' () "fame, glory, honour, praise, renown, godlike" and ''berht'' "bright, light, shining"). It is the second most frequently used given name of ancient Germanic origin.Reaney & Wilson, 1997. ''Dictionary of English Surnames''. Oxford University Press. It is also in use as a surname. Another commonly used form of the name is Rupert. After becoming widely used in Continental Europe, the name entered England in its Old French form ''Robert'', where an Old English cognate form (''Hrēodbēorht'', ''Hrodberht'', ''Hrēodbēorð'', ''Hrœdbœrð'', ''Hrœdberð'', ''Hrōðberχtŕ'') had existed before the Norman Conquest. The feminine version is Roberta. The Italian, Portuguese, and Spanish form is Roberto. Robert is also a common name in many Germanic languages, including En ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
McCulloch MC-4
The McCulloch Model MC-4 was an American tandem-rotor helicopter and was the first helicopter developed by McCulloch Aircraft Corporation, a division of McCulloch Motors Corporation.Harding, Stephen ''U.S. Army Aircraft Since 1947'', Airlife Publishing, Ltd. 1990. It was evaluated by the United States Army as the YH-30 and the United States Navy as the XHUM-1. Design and development The MC-4 was a larger version of the earlier HERC JOV-3 tandem-rotor helicopter and was developed by the McCulloch Aircraft Corporation. The JOV-3 was developed by Jovanovich when he headed the Helicopter Engineering and Research Corporation. The JOV-3 first flew in 1948. In 1949, Jovanovich moved to the McCulloch Motors Corporation, where an enlarged helicopter, the MC-4, first flew in March 1951. It was followed by a similar MC-4C and three evaluation helicopters for the United States Army (as the YH-30). The MC-4C was slightly larger than the MC-4. When the MC-4C was certified in 1953, it was the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
McCulloch J-2
__NOTOC__ The McCulloch J-2 was a small, two-seat autogyro with an enclosed cabin, one of only three designs of this type of aircraft to receive a type certificate in the United States. It was built by McCulloch Aircraft Corporation. Design and development It was designed by Drago Jovanovich and first flew in June 1962. McCulloch acquired the design in 1969 and put it into production, building 83 aircraft over the next three years. They were reported to sell for US$15,900. The design featured a belt clutch and a transmission which could be engaged to spin the rotor blades to high speed before take-off to produce short takeoff runs. A lever on the rear cockpit wall would select the drive position for the transmission. A single "spin-up lever" on the cockpit left side would then be pressed downward, operating as a collective pitch control to put the blades into flat pitch while simultaneously tensioning the belt clutch. The rotor could be spun to over 500 rpm before takeoff, we ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Autogyro
An autogyro (from Greek and , "self-turning"), gyroscope, gyrocopter or gyroplane, is a class of rotorcraft that uses an unpowered rotor in free autorotation to develop lift. A gyroplane "means a rotorcraft whose rotors are not engine-driven, except for initial starting, but are made to rotate by action of the air when the rotorcraft is moving; and whose means of propulsion, consisting usually of conventional propellers, is independent of the rotor system." While similar to a helicopter rotor in appearance, the autogyro's unpowered rotor disc must have air flowing upward across it to make it rotate. Forward thrust is provided independently, by an engine-driven propeller. It was originally named the ''autogiro'' by its Spanish inventor and engineer, Juan de la Cierva, in his attempt to create an aircraft that could fly safely at low speeds. He first flew one on January 1923, at Cuatro Vientos Airport in Madrid. The aircraft resembled the fixed-wing aircraft of the d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bill Lear
William Powell Lear (June 26, 1902 – May 14, 1978) was an American inventor and businessman. He is best known for founding Learjet, a manufacturer of business jets. He also invented the battery eliminator for the B battery, and developed the car radio and the 8-track cartridge, an audio tape system.Stim and Pressman 2007, p. 20. Throughout his career of 46 years, Lear received over 140 patents. Career Lear was born on June 26, 1902, in Hannibal, Missouri, to Rueben Marion Lear, a carpenter, and Gertrude Elizabeth Powell Lear. His mother left his father and he stayed with his aunt, Gussie Bornhouser, in Dubuque, Iowa. Later, Otto Kirmse took him in and raised him as his stepson. The family relocated to Chicago where Lear attended Kershaw Grammar School. On Sundays, he attended the Moody Tabernacle (now Moody Church). "From listening to Paul Rader, of the Moody Tabernacle, he learned grammar and how to speak. He found out how to meet people, how to shake hands, and what ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jovair Sedan 4E
The McCulloch Model MC-4 was an American tandem-rotor helicopter and was the first helicopter developed by McCulloch Aircraft Corporation, a division of McCulloch Motors Corporation.Harding, Stephen ''U.S. Army Aircraft Since 1947'', Airlife Publishing, Ltd. 1990. It was evaluated by the United States Army as the YH-30 and the United States Navy as the XHUM-1. Design and development The MC-4 was a larger version of the earlier HERC JOV-3 tandem-rotor helicopter and was developed by the McCulloch Aircraft Corporation. The JOV-3 was developed by Jovanovich when he headed the Helicopter Engineering and Research Corporation. The JOV-3 first flew in 1948. In 1949, Jovanovich moved to the McCulloch Motors Corporation, where an enlarged helicopter, the MC-4, first flew in March 1951. It was followed by a similar MC-4C and three evaluation helicopters for the United States Army (as the YH-30). The MC-4C was slightly larger than the MC-4. When the MC-4C was certified in 1953, it was th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
McCulloch J-2 Aero Super Gyroplane - GPN-2000-001904
McCulloch is a Scottish surname, commonly found in Galloway, and usually associated with Clan MacCulloch. It may be etymologically related to the Irish surname McCullough. Notable people with the surname include: *Abbey McCulloch (born 1990), Australian netball player *Alan McCulloch (politician), New Zealand politician * Alan McLeod McCulloch (1907–1992), Australian cartoonist, painter, writer, art critic, art historian and gallery director *Allan Riverstone McCulloch (1885–1925), Australian zoologist *Andrew McCulloch (footballer) (fl. 1970-1985), British soccer player * Andrew McCulloch (writer and actor) (born 1945), British television writer and actor *Andrew McCulloch (drummer) (born 1946), British drummer for King Crimson and others *Benjamin McCulloch (1811–1862), American Civil War soldier *Bruce McCulloch (born 1961), Canadian actor and comedian * Christopher McCulloch (born 1971), American storyboard artist, writer, director, producer, and voice actor * Derek Mc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
