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William R. Sears
William Rees Sears (March 1, 1913 – October 12, 2002) was an aeronautical engineer and educator who worked at Caltech, Northrop Aircraft, Cornell University (as the J. L. Given Professor of Engineering), and the University of Arizona. He was an editor of the '' Journal of the Aeronautical Sciences'' from 1955 to 1963 and the founding Editor of the ''Annual Review of Fluid Mechanics'' in 1969. Career William R. Sears was born in Minneapolis, Minnesota, the son of William and Gertrude Sears.Obituaries William R. Sears Retrieved 6 September 2011. He earned his BS degree from the in 1934. Following this, he enrolled at |
Minneapolis, Minnesota
Minneapolis () is the largest city in Minnesota, United States, and the county seat of Hennepin County. The city is abundant in water, with thirteen lakes, wetlands, the Mississippi River, creeks and waterfalls. Minneapolis has its origins in timber and as the flour milling capital of the world. It occupies both banks of the Mississippi River and adjoins Saint Paul, the state capital of Minnesota. Prior to European settlement, the site of Minneapolis was inhabited by Dakota people. The settlement was founded along Saint Anthony Falls on a section of land north of Fort Snelling; its growth is attributed to its proximity to the fort and the falls providing power for industrial activity. , the city has an estimated 425,336 inhabitants. It is the most populous city in the state and the 46th-most-populous city in the United States. Minneapolis, Saint Paul and the surrounding area are collectively known as the Twin Cities. Minneapolis has one of the most extensive public ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jack Northrop
John Knudsen Northrop (November 10, 1895 – February 18, 1981) was an American aircraft industrialist and designer who founded the Northrop Corporation in 1939. His career began in 1916 as a draftsman for Loughead Aircraft Manufacturing Company (founded 1912). He joined the Douglas Aircraft Company in 1923, where in time he became a project engineer. In 1927 he joined the Lockheed Corporation, where he was a chief engineer on the Lockheed Vega transport. He left in 1929 to found Avion Corporation, which he sold in 1930. Two years later, he founded the Northrop Corporation. This firm became a subsidiary of Douglas Aircraft in 1939, so he co-founded a second company named Northrop. Early life and entering aviation Born in Newark, New Jersey in 1895, Northrop grew up in Santa Barbara, California. In 1916 Northrop's first job in aviation was in working as a draftsman for the Santa Barbara-based Loughead Aircraft Manufacturing Company. After the outbreak of the First World W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Institute Of Aeronautics And Astronautics
The American Institute of Aeronautics and Astronautics (AIAA) is a professional society for the field of aerospace engineering. The AIAA is the U.S. representative on the International Astronautical Federation and the International Council of the Aeronautical Sciences. In 2015, it had more than 30,000 members among aerospace professionals worldwide (a majority are American and/or live in the United States). History The AIAA was founded in 1963 from the merger of two earlier societies: the American Rocket Society (ARS), founded in 1930 as the American Interplanetary Society (AIS), and the Institute of the Aerospace Sciences (IAS), founded in 1932 as the Institute of the Aeronautical Sciences. Paul Johnston was the first executive director of the organization. Jim Harford took his seat after 18 months. The newly-formed structure gathered 47 technical committees and one broad technical publication, the ''AIAA Journal''. The ''AIAA Student Journal'' was also launched in 1963. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Academy Of Arts And Sciences
The American Academy of Arts and Sciences (abbreviation: AAA&S) is one of the oldest learned societies in the United States. It was founded in 1780 during the American Revolution by John Adams, John Hancock, James Bowdoin, Andrew Oliver, and other Founding Fathers of the United States. It is headquartered in Cambridge, Massachusetts. Membership in the academy is achieved through a thorough petition, review, and election process. The academy's quarterly journal, ''Dædalus'', is published by MIT Press on behalf of the academy. The academy also conducts multidisciplinary public policy research. History The Academy was established by the Massachusetts legislature on May 4, 1780, charted in order "to cultivate every art and science which may tend to advance the interest, honor, dignity, and happiness of a free, independent, and virtuous people." The sixty-two incorporating fellows represented varying interests and high standing in the political, professional, and commercial s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Academy Of Engineering
The National Academy of Engineering (NAE) is an American nonprofit, non-governmental organization. The National Academy of Engineering is part of the National Academies of Sciences, Engineering, and Medicine, along with the National Academy of Sciences (NAS), the National Academy of Medicine, and the National Research Council (now the program units of NASEM). The NAE operates engineering programs aimed at meeting national needs, encourages education and research, and recognizes the superior achievements of engineers. New members are annually elected by current members, based on their distinguished and continuing achievements in original research. The NAE is autonomous in its administration and in the selection of its members, sharing with the rest of the National Academies the role of advising the federal government. History The National Academy of Sciences was created by an Act of Incorporation dated March 3, 1863, which was signed by then President of the United States A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Academy Of Sciences
The National Academy of Sciences (NAS) is a United States nonprofit, non-governmental organization. NAS is part of the National Academies of Sciences, Engineering, and Medicine, along with the National Academy of Engineering (NAE) and the National Academy of Medicine (NAM). As a national academy, new members of the organization are elected annually by current members, based on their distinguished and continuing achievements in original research. Election to the National Academy is one of the highest honors in the scientific field. Members of the National Academy of Sciences serve ''pro bono'' as "advisers to the nation" on science, engineering, and medicine. The group holds a congressional charter under Title 36 of the United States Code. Founded in 1863 as a result of an Act of Congress that was approved by Abraham Lincoln, the NAS is charged with "providing independent, objective advice to the nation on matters related to science and technology. ... to provide scien ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Piper Twin Comanche
The Piper PA-30 Twin Comanche is an American twin-engined cabin monoplane designed and built by Piper Aircraft. It was a twin-engined development of the PA-24 Comanche single-engined aircraft. A variant with counter-rotating propellers was designated the Piper PA-39 Twin Comanche C/R.Murphy, Tom and Hans Halberstadt, ''Illustrated Piper Buyer's Guide,'' 1993, MBI Publishing / Motorbooks International, Osceola, WisconsinIbold, Ken, ed., ''Aviation Consumer's Used Aircraft Guide, 9th Edition,'' vol. 2, 2001, Belvoir Publications, Greenwich, ConnecticutHarris, Richard"Piper Aircraft: a quick history,"'InFlight USA'' magazine, 2000-2001, as revised and expanded to 2014, on ''Aviation Answer-Man,'' website, retrieved May 11, 2017 Development The Piper PA-30 Twin Comanche was designed as a twin-engined variant of the Piper PA-24 Comanche. A complex light twin, with retractable landing gear, seating 4 (in original models) to 6 (in later models), and cruise speeds ranging from 160 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Piper Comanche
The Piper PA-24 Comanche is an American four-seat or six-seat, low-wing, all-metal, light aircraft of semimonocoque construction with tricycle retractable landing gear. Piper Aircraft designed and developed the Comanche, which first flew on May 24, 1956. Together with the PA-30 and PA-39 Twin Comanches, it made up the core of the Piper Aircraft lineup until the production lines for both aircraft were destroyed in the 1972 Lock Haven flood. Design and development The Comanche is a four-seat (or in 260B and 260C models, six-seat), single-engined, low-wing monoplane. It is an all-metal aircraft with a retractable landing gear. Two prototypes were built in 1956, with the first being completed by June 20, 1956. The first production aircraft, powered by a Lycoming O-360-A1A engine, first flew on October 21, 1957. In 1958, it was joined by a higher-powered PA-24-250 with a Lycoming O-540-A1A5 engine; this model was originally to be known as the PA-26, but Piper decided to kee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beech Bonanza
The Beechcraft Bonanza is an American general aviation aircraft introduced in 1947 by Beechcraft, Beech Aircraft Corporation of Wichita, Kansas. The six-seater, single-engined aircraft is still being produced by Beechcraft and has been in continuous production longer than any other aircraft in history. More than 17,000 Bonanzas of all variants have been built, produced in both distinctive V-tail and conventional tail configurations; early conventional-tail versions were marketed as the Debonair. Design and development At the end of World War II, two all-metal light aircraft emerged, the Model 35 Bonanza and the Cessna 195, that represented very different approaches to the premium end of the postwar civil-aviation market. With its high-wing, seven-cylinder radial engine, fixed Conventional landing gear, tailwheel undercarriage, and roll-down side windows, the Cessna 195 was a continuation of prewar technology. The Bonanza, however, featured an easier-to-manage, horizontally o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mooney M-18 Mite
The Mooney M-18 "Mite" is a low-wing, single-place monoplane with retractable, tricycle landing gear.M.R. Montgomery & Gerald Foster: ''A Field Guide to Airplanes - Second Edition'', p. 46. Houghton Milflin Company 1992. Plane and Pilot: ''1978 Aircraft Directory'', p. 53. Werner & Werner Corp Publishing, 1978. The Mite was designed by Al Mooney and was intended as a personal airplane marketed to fighter pilots returning from World War II. Development The M-18 design goal was extremely low operating costs. The Mite is constructed mainly of fabric-covered wood, with a single spruce and plywood "D" wing spar. The wing aft of the spar is fabric-covered. The airfoil selected for the design was the NACA 64A215. The M-18 represented the first time a NACA 6-series airfoil had been used on a civil aircraft after World War II. The aircraft featured a unique "safe-trim" system. This mechanical device links the wing flaps to the tail trim system and automatically adjusts the horizont ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Northrop P-61 Black Widow
The Northrop P-61 Black Widow is a twin-engine United States Army Air Forces fighter aircraft of World War II. It was the first operational U.S. warplane designed as a night fighter, and the first aircraft designed specifically as a night fighter. Named for the North American spider ''Latrodectus mactans'', it was an all-metal, twin-engine, twin-boom design armed with four forward-firing 20 mm (.79 in) Hispano M2 autocannon in the lower fuselage, and four M2 Browning machine guns in a dorsal gun turret. Developed during the war, the first test flight was made on May 26, 1942, with the first production aircraft rolling off the assembly line in October 1943. Although not produced in the large numbers of its contemporaries, the Black Widow was operated effectively as a night fighter by United States Army Air Forces squadrons in the European Theater, Pacific Theater, China Burma India Theater, and Mediterranean Theater during World War II. It replaced earlier Briti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Northrop YB-49
The Northrop YB-49 was an American prototype jet-powered heavy bomber developed by Northrop Corporation shortly after World War II for service with the United States Air Force. The YB-49 featured a flying wing design and was a turbojet-powered development of the earlier, piston-engined Northrop XB-35 and YB-35. The two YB-49s actually built were both converted YB-35 test aircraft. The YB-49 never entered production, being passed over in favor of the more conventional Convair B-36 piston-driven design. Design work performed in the development of the YB-35 and YB-49 nonetheless proved to be valuable to Northrop decades later in the eventual development of the B-2 stealth bomber, which entered service in the early 1990s. Design and development With the XB-35 program seriously behind schedule by 1944, and the end of piston-engined combat aircraft in sight, the production contract for this propeller-driven type was cancelled in May of that year. Nevertheless, the Flying Wing de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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