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Roger Boisjoly
Roger Mark Boisjoly ( ,; April 25, 1938 – January 6, 2012) was an American mechanical engineer, fluid dynamicist, and an aerodynamicist. He is best known for having raised strenuous objections to the launch of the Space Shuttle ''Challenger'' months before the loss of the spacecraft and its crew in January 1986. Boisjoly correctly predicted, based on earlier flight data, that the O-rings on the rocket boosters would fail if the shuttle launched in cold weather. Morton Thiokol's managers decided to launch the shuttle despite his warnings, leading to the catastrophic failure. He was considered a high-profile whistleblower. Early life and education Boisjoly was born on April 25, 1938, in the city of Lowell, Massachusetts. He grew up in the neighborhood of Belvedere as the son of a mill worker and one of three brothers. During high-school he played tennis. Boisjoly studied mechanical engineering at the University of Massachusetts Lowell. Career Boisjoly started his c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rogers Commission
The Rogers Commission Report was written by a Presidential Commission charged with investigating the Space Shuttle ''Challenger'' disaster during its 10th mission, STS-51-L. The report, released and submitted to President Ronald Reagan on June 9, 1986, both determined the cause of the disaster that took place 73 seconds after liftoff, and urged NASA to improve and install new safety features on the shuttles and in its organizational handling of future missions. Commission members * William P. Rogers, chairman and former United States Secretary of State (under Richard Nixon) and United States Attorney General (under Dwight Eisenhower) * Neil Armstrong (Vice Chairman), retired astronaut and first human to walk on the Moon (Apollo 11) * David Campion Acheson, diplomat and son of former Secretary of State Dean Acheson * Eugene E. Covert, aeronautics expert and former Chief Scientist of the U.S. Air Force * Richard P. Feynman, theoretical physicist and winner of the 1965 N ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Challenger (1990 Film)
''Challenger'' is a 1990 American Disaster film, disaster Drama film, drama television film based on the events surrounding the Space Shuttle Challenger disaster, Space Shuttle ''Challenger'' disaster in 1986. Its production was somewhat controversial as the families of the astronauts generally objected to it. A prologue states that the film was "researched with the consultation of the NASA, National Aeronauts and Space Administration" and partly filmed at NASA's Johnson Space Center in Houston, Texas. Plot The film concentrates on the safety inspections and arguments surrounding the O-rings that Rogers Commission Report, ultimately were blamed for the Timeline of STS-51-L, explosion of ''Space Shuttle Challenger, Challenger''. While doing this, it also aims to show the personal humanity of the seven List of astronauts by name, crew members. Generally, the film supports the Space Shuttle program and the dedication of NASA personnel in general while Criticism of the Space Shuttle p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Made-for-television Film
A television film, alternatively known as a television movie, made-for-TV film/movie or TV film/movie, is a feature-length film that is produced and originally distributed by or to a television network, in contrast to theatrical films made for initial showing in movie theaters, and direct-to-video films made for initial release on home video formats. In certain cases, such films may also be referred to and shown as a miniseries, which typically indicates a film that has been divided into multiple parts or a series that contains a predetermined, limited number of episodes. Origins and history Precursors of "television movies" include ''Talk Faster, Mister'', which aired on WABD (now WNYW) in New York City on December 18, 1944, and was produced by RKO Pictures, and the 1957 ''The Pied Piper of Hamelin'', based on the poem by Robert Browning, and starring Van Johnson, one of the first filmed "family musicals" made directly for television. That film was made in Technicolor, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The New York Times
''The New York Times'' (''the Times'', ''NYT'', or the Gray Lady) is a daily newspaper based in New York City with a worldwide readership reported in 2020 to comprise a declining 840,000 paid print subscribers, and a growing 6 million paid digital subscribers. It also is a producer of popular podcasts such as '' The Daily''. Founded in 1851 by Henry Jarvis Raymond and George Jones, it was initially published by Raymond, Jones & Company. The ''Times'' has won 132 Pulitzer Prizes, the most of any newspaper, and has long been regarded as a national " newspaper of record". For print it is ranked 18th in the world by circulation and 3rd in the U.S. The paper is owned by the New York Times Company, which is publicly traded. It has been governed by the Sulzberger family since 1896, through a dual-class share structure after its shares became publicly traded. A. G. Sulzberger, the paper's publisher and the company's chairman, is the fifth generation of the family to head the pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orange, California
Orange is a city located in North Orange County, California. It is approximately north of the county seat, Santa Ana, California, Santa Ana. Orange is unusual in this region because many of the homes in its Old Town District were built before 1920. While many other cities in the region demolished such houses in the 1960s, Orange decided to preserve them. The small city of Villa Park, California, Villa Park is surrounded by the city of Orange. The population was 139,911 as of 2020 United States Census, 2020. History Members of the Tongva and Juaneño/Luiseño ethnic group long inhabited this area. After the 1769 expedition of Gaspar de Portolá, an expedition out of San Blas, Nayarit, Mexico, led by Father Junípero Serra, named the area Vallejo de Santa Ana (Valley of Saint Anne). On November 1, 1776, Mission San Juan Capistrano became the area's first permanent European settlement in Alta California, New Spain. In 1801, the Spanish Empire granted to José Antonio Yorba, w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chapman University
Chapman University is a private research university in Orange, California. It encompasses ten schools and colleges, including Fowler School of Engineering, Dodge College of Film and Media Arts, Fowler School of Law, and Schmid College of Science and Technology, and is classified among "R2: Doctoral Universities – High research activity". Although it does not claim to be a Christian college, it has had a relationship with the Disciples of Christ since the university's founding and with the United Church of Christ since 2011. History Founded in Woodland, California, as Hesperian College, the school began classes on March 4, 1861. Its opening was timed to coincide with the hour of Abraham Lincoln's first inauguration. Hesperian admitted students regardless of sex or race. In 1920, the assets of Hesperian College were absorbed by California Christian College, which held classes in downtown Los Angeles. In 1934, the school was renamed Chapman College, after the chairman ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ronald Reagan
Ronald Wilson Reagan ( ; February 6, 1911June 5, 2004) was an American politician, actor, and union leader who served as the 40th president of the United States from 1981 to 1989. He also served as the 33rd governor of California from 1967 to 1975, after having a career in entertainment. Reagan was born in Tampico, Illinois. He graduated from Eureka College in 1932 and began to work as a sports announcer in Iowa. In 1937, Reagan moved to California, where he found Ronald Reagan filmography, work as a film actor. From 1947 to 1952, Reagan served as the president of the Screen Actors Guild, working to Hollywood blacklist, root out alleged communist influence within it. In the 1950s, he moved to a career in television and became a spokesman for General Electric. From 1959 to 1960, he again served as the guild's president. In 1964, his speech "A Time for Choosing" earned him national attention as a new conservative figure. Building a network of supporters, Reagan was 1966 Califo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United Press International
United Press International (UPI) is an American international news agency whose newswires, photo, news film, and audio services provided news material to thousands of newspapers, magazines, radio and television stations for most of the 20th century. At its peak, it had more than 6,000 media subscribers. Since the first of several sales and staff cutbacks in 1982, and the 1999 sale of its broadcast client list to its main U.S. rival, the Associated Press, UPI has concentrated on smaller information-market niches. History Formally named United Press Associations for incorporation and legal purposes, but publicly known and identified as United Press or UP, the news agency was created by the 1907 uniting of three smaller news syndicates by the Midwest newspaper publisher E. W. Scripps. It was headed by Hugh Baillie (1890–1966) from 1935 to 1955. At the time of his retirement, UP had 2,900 clients in the United States, and 1,500 abroad. In 1958, it became United Press Intern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NASA
The National Aeronautics and Space Administration (NASA ) is an independent agency of the US federal government responsible for the civil space program, aeronautics research, and space research. NASA was established in 1958, succeeding the National Advisory Committee for Aeronautics (NACA), to give the U.S. space development effort a distinctly civilian orientation, emphasizing peaceful applications in space science. NASA has since led most American space exploration, including Project Mercury, Project Gemini, the 1968-1972 Apollo Moon landing missions, the Skylab space station, and the Space Shuttle. NASA supports the International Space Station and oversees the development of the Orion spacecraft and the Space Launch System for the crewed lunar Artemis program, Commercial Crew spacecraft, and the planned Lunar Gateway space station. The agency is also responsible for the Launch Services Program, which provides oversight of launch operations and countdown management f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
STS-51-L
STS-51-L was the 25th mission of the NASA Space Shuttle program and the final flight of Space Shuttle ''Challenger''. Planned as the first Teacher in Space Project flight in addition to observing Halley's Comet for six days and performing a routine satellite deployment, the mission never achieved orbit; a structural failure during its ascent phase 73 seconds after launch from Kennedy Space Center Launch Complex 39B on January 28, 1986, killed all seven crew members —Commander Francis R. "Dick" Scobee, Pilot Michael J. Smith, Mission Specialists Ellison S. Onizuka, Judith A. Resnik and Ronald E. McNair, and Payload Specialists Gregory B. Jarvis and S. Christa McAuliffe—and destroyed the orbiter. Immediately after the disaster, President Ronald Reagan convened the Rogers Commission to determine the cause of the explosion. The failure of an O-ring seal on the starboard Solid Rocket Booster (SRB) was determined to have caused the shuttle to break up in flight. Space Sh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fillet (mechanics)
In mechanical engineering, a fillet is a rounding of an interior or exterior corner of a part design. An interior or exterior corner, with an angle or type of bevel, is called a " chamfer". Fillet geometry, when on an interior corner is a line of concave function, whereas a fillet on an exterior corner is a line of convex function (in these cases, fillets are typically referred to as rounds). Fillets commonly appear on welded, soldered, or brazed joints. Applications * Stress concentration is a problem of load-bearing mechanical parts which is reduced by employing fillets on points and lines of expected high stress. The fillets distribute the stress over a broader area and effectively make the parts more durable and capable of bearing larger loads. * For considerations in aerodynamics, fillets are employed to reduce interference drag where aircraft components such as wings, struts, and other surfaces meet one another. * For manufacturing, concave corners are sometimes fillet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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