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Drago Jovanovich
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 aircraf ... [...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 firs ... [...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 operators 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. Strictly speaking, del is not a specific operator, but rather a convenient mathematical notation for those three operators that makes many equations easier to write and remember. The del symbol (or nabla) can be interpreted as a vector of partial derivative operators; and its three possible meanings—gradient, divergenc ... [...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 had 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 present-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. February * ... [...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 previously known as Def American * American University, in Washington, D.C. Sports teams Soccer * ... [...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 * Yugoslav government-in-exile, an official government of Yugoslavia, headed by King Peter II * Yugoslav Counter-Intelligence Service * Yugoslav Inter-Republic League * Yugoslav Social-Democratic Party, a political party in Slovenia and Istria during the Austro-Hungarian Empire and the Kingdom of Yugoslavia * Serbo-Croatian language, proposed in 1861 and rejected as the legal name of th ... [...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 ''Hrōþ, Hruod'' ( non, Hróðr) "fame, glory, honour, praise, renown" and ''berht'' "bright, light, shining"). It is the second most frequently used given name of ancient Germanic origin. It is also in use Robert (surname), as a surname. Another commonly used form of the name is Rupert (name), Rupert. After becoming widely used in Continental Europe it 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 (given name), Roberta. The Italian, Portuguese, and Spanish form is Roberto (given name), Roberto. Robert is also a common name in many Germanic languages, including English ... [...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 fir ... [...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, w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Autogyro
An autogyro (from Greek and , "self-turning"), also known as a ''gyroplane'', is a type of rotorcraft that uses an unpowered rotor in free autorotation to develop lift. Forward thrust is provided independently, by an engine-driven propeller. While similar to a helicopter rotor in appearance, the autogyro's rotor must have air flowing across the rotor disc to generate rotation, and the air flows upwards through the rotor disc rather than down. The autogyro was invented by Spanish engineer Juan de la Cierva in an attempt to create an aircraft that could fly safely at low speeds. He first flew one on 9 January 1923, at Cuatro Vientos Airfield in Madrid. The aircraft resembled the fixed-wing aircraft of the day, with a front-mounted engine and propeller. Cierva's autogyro is considered the predecessor of the modern helicopter. The success of the autogyro garnered the interest of industrialists and under license from Cierva in the 1920s and 1930s, the Pitcairn & Kellett compan ... [...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 Ruben 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 to say wh ... [...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 the firs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
McCulloch J-2 Aero Super Gyroplane - GPN-2000-001904
McCulloch is a Scottish surname. It's a variation of the Northern Irish surname McCullough. It's commonly found in Galloway. Notable people with the surname include: *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 *Derek McCulloch (comics) (born 1964), Canadian writer *Ellen McCulloch (1930–2005), Australian ornithologist and nature writer *Ellen McCulloch-Lovell, American college administrator *Gretchen McCulloch, Canadian Internet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
_(25970705102).jpg "Click for more on -> McCulloch YH-30")
