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William R. Lucas
William R. Lucas (born March 1, 1922) was the fourth Director of the NASA Marshall Space Flight Center. He served as director from June 15, 1974, to July 3, 1986. Early career Lucas was born in Newbern, Tennessee. He graduated from Memphis State College (now the University of Memphis) in 1943 with a degree in chemistry. He earned a master's degree and a doctorate in metallurgy from Vanderbilt University in Nashville. He briefly interrupted his education to serve in the United States Navy during World War II. In 1952, Lucas moved to Huntsville, Alabama, to join Wernher von Braun's team at the Army Ballistic Missile Agency, based at the Redstone Arsenal. After serving as a staffer with the Guided Missile Development Group, he became the agency's materials officer in 1956. In this position, Lucas designed the thermal control system for the United States' first space satellite, Explorer 1. He also selected the materials used in the rocket that made Alan Shepard the firs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Newbern, Tennessee
Newbern is a town in Dyer County, Tennessee. As of the 2010 census, the town population was 3,313. History In October 1902, Garfield Burley and Curtis Brown were lynched in downtown Newbern. Burley and Brown were tied together and hung from a telephone pole within sight of the town's train depot. The lynching is notable due to the efforts of several local community leaders to prevent it. On April 2, 2006, sixteen people were killed in Newbern when it and its surrounding communities were directly hit by an F3 tornado. The storm caused nearly $15 million in damages. Geography Newbern is located at (36.116460, -89.268099). According to the United States Census Bureau, the town has a total area of , all land. Climate The climate in this area is characterized by hot, humid summers and generally mild to cool winters. According to the Köppen Climate Classification system, Newbern has a humid subtropical climate, abbreviated "Cfa" on climate maps. Demographics 2020 census As ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skylab
Skylab was the first United States space station, launched by NASA, occupied for about 24 weeks between May 1973 and February 1974. It was operated by three separate three-astronaut crews: Skylab 2, Skylab 3, and Skylab 4. Major operations included an orbital workshop, a solar observatory, Earth observation, and hundreds of experiments. Unable to be re-boosted by the Space Shuttle, which was not ready until 1981, Skylab's orbit eventually decayed, and it disintegrated in the atmosphere on July 11, 1979, scattering debris across the Indian Ocean and Western Australia. Overview Skylab was the only space station operated exclusively by the United States. A permanent station was planned starting in 1988, but funding for this was canceled and replaced with United States participation in an International Space Station in 1993. Skylab had a mass of with a Apollo command and service module (CSM) attached and included a workshop, a solar observatory, and several hundred lif ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nazi Concentration Camp
From 1933 to 1945, Nazi Germany operated more than a thousand concentration camps, (officially) or (more commonly). The Nazi concentration camps are distinguished from other types of Nazi camps such as forced-labor camps, as well as concentration camps operated by Germany's allies. on its own territory and in parts of German-occupied Europe. The first camps were established in March 1933 immediately after Adolf Hitler became Chancellor of Germany. Following the 1934 purge of the SA, the concentration camps were run exclusively by the SS via the Concentration Camps Inspectorate and later the SS Main Economic and Administrative Office. Initially, most prisoners were members of the Communist Party of Germany, but as time went on different groups were arrested, including "habitual criminals", "asocials", and Jews. After the beginning of World War II, people from German-occupied Europe were imprisoned in the concentration camps. Following Allied military victories, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gestapo
The (), abbreviated Gestapo (; ), was the official secret police of Nazi Germany and in German-occupied Europe. The force was created by Hermann Göring in 1933 by combining the various political police agencies of Prussia into one organisation. On 20 April 1934, oversight of the Gestapo passed to the head of the ''Schutzstaffel'' (SS), Heinrich Himmler, who was also appointed Chief of German Police by Hitler in 1936. Instead of being exclusively a Prussian state agency, the Gestapo became a national one as a sub-office of the (SiPo; Security Police). From 27 September 1939, it was administered by the Reich Security Main Office (RSHA). It became known as (Dept) 4 of the RSHA and was considered a sister organisation to the (SD; Security Service). During World War II, the Gestapo played a key role in the Holocaust. After the war ended, the Gestapo was declared a criminal organisation by the International Military Tribunal (IMT) at the Nuremberg trials. History After A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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] |
YouTube
YouTube is a global online video sharing and social media platform headquartered in San Bruno, California. It was launched on February 14, 2005, by Steve Chen, Chad Hurley, and Jawed Karim. It is owned by Google, and is the second most visited website, after Google Search. YouTube has more than 2.5 billion monthly users who collectively watch more than one billion hours of videos each day. , videos were being uploaded at a rate of more than 500 hours of content per minute. In October 2006, YouTube was bought by Google for $1.65 billion. Google's ownership of YouTube expanded the site's business model, expanding from generating revenue from advertisements alone, to offering paid content such as movies and exclusive content produced by YouTube. It also offers YouTube Premium, a paid subscription option for watching content without ads. YouTube also approved creators to participate in Google's AdSense program, which seeks to generate more revenue for both parties ... [...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] |
Thiokol
Thiokol (variously Thiokol Chemical Corporation(/Company), Morton Thiokol Inc., Cordant Technologies Inc., Thiokol Propulsion, AIC Group, ATK Thiokol, ATK Launch Systems Group; finally Orbital ATK before becoming part of Northrop Grumman) was an American corporation concerned initially with rubber and related chemicals, and later with rocket and missile propulsion systems. Its name is a portmanteau of the Greek words for sulfur (θεῖον ''"theion"'') and glue (κόλλα ''"kolla"''), an allusion to the company's initial product, Thiokol polymer. The Thiokol Chemical Company was founded in 1929. Its initial business was a range of synthetic rubber and polymer sealants. Thiokol was a major supplier of liquid polymer sealants during World War II. When scientists at the Jet Propulsion Laboratory discovered that Thiokol's polymers made ideal binders for solid rocket fuels, Thiokol moved into the new field, opening laboratories at Elkton, Maryland, and later production faciliti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
O-ring
An O-ring, also known as a packing or a toric joint, is a mechanical gasket in the shape of a torus; it is a loop of elastomer with a round cross-section, designed to be seated in a groove and compressed during assembly between two or more parts, forming a seal at the interface. The O-ring may be used in static applications or in dynamic applications where there is relative motion between the parts and the O-ring. Dynamic examples include rotating pump shafts and hydraulic cylinder pistons. Static applications of O-rings may include fluid or gas sealing applications in which: (1) the O-ring is compressed resulting in zero clearance, (2) the O-ring material is vulcanized solid such that it is impermeable to the fluid or gas, and (3) the O-ring material is resistant to degradation by the fluid or gas. The wide range of potential liquids and gases that need to be sealed has necessitated the development of a wide range of materials. O-rings are one of the most common seals used i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Space Shuttle Challenger Disaster
On January 28, 1986, the broke apart 73 seconds into its flight, killing all seven crew members aboard. The spacecraft disintegrated above the Atlantic Ocean, off the coast of Cape Canaveral, Florida, at 11:39a.m. EST (16:39 UTC). It was the first fatal accident involving an American spacecraft in flight. The mission, designated STS-51-L, was the tenth flight for the orbiter and the twenty-fifth flight of the Space Shuttle fleet. The crew was scheduled to deploy a communications satellite and study Halley's Comet while they were in orbit, in addition to taking school teacher Christa McAuliffe into space. The latter resulted in a higher than usual media interest and coverage of the mission; the launch and subsequent disaster were seen live in many schools across the United States. The cause of the disaster was the failure of the two O-ring seals in a joint in the shuttle's right solid rocket booster (SRB). The record-low temperatures of the launch had stiffened the r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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