16 résultats pour "airplane"
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Airplane.
For example, the Anglo-French Concorde, a commercial supersonic aircraft, was generally limited to over-water routes, or to those over sparsely populated regions ofthe world. This limitation impacted the commercial viability of the Concorde, which ended its regular passenger service in October 2003. Designers today believe theycan help lessen the impact of sonic booms created by supersonic airliners but probably cannot eliminate them. One of the most difficult practical barriers to supersonic fl...
- Jefferson Airplane - Musik.
- Jefferson Airplane - rock.
- Surrealistic Pillow [Jefferson Airplane] - analyse de l'oeuvre musicale.
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World War I .
and troops to Europe from the United States and other overseas sources. In 1914 Britain implemented a sea blockade of Germany to prevent the delivery of importssuch as food and war materials. The same year, Germany began using submarines to disrupt Allied seaborne traffic and prevent supplies from reaching Britain. In 1915Germany instituted a submarine blockade around Britain. From February 1915 to September 1915 and again in 1917, Germany used unrestricted submarine warfare,sinking ships withou...
- Patsy Cline Patsy Cline (1932-63), American country music singer, who died in an airplane crash in 1963 at the height of her fame.
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Helicopter.
naturally flaps down so as to increase lift. Flapping allows the differences in lift caused by uneven rotor tip speed to cancel out, producing a stable ride. Many helicoptersuse mechanical hinges with lubricated bearings, but some use flexible straps made of a composite material in order to reduce the required maintenance. Helicopters require different amounts of lift and thrust at different times during flight, because the aerodynamic forces acting on them change during hovering andacceleration...
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Figure Skating World Champions.
1979 Vladimir Kovalev (USSR) 1980 Jan Hoffmann (East Germany) 1981 Scott Hamilton (United States) 1982 Scott Hamilton (United States) 1983 Scott Hamilton (United States) 1984 Scott Hamilton (United States) 1985 Alexandr Fadeev (USSR) 1986 Brian Boitano (United States) 1987 Brian Orser (Canada) 1988 Brian Boitano (United States) 1989 Kurt Browning (Canada) 1990 Kurt Browning (Canada) 1991 Kurt Browning (Canada) 1992 Viktor Petrenko (CIS) 1993 Kurt Browning (Canada) 1994 Elvis Stojko (Canada) 1995...
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Figure Skating World Champions
Men's Individual Champions.
1979 Vladimir Kovalev (USSR) 1980 Jan Hoffmann (East Germany) 1981 Scott Hamilton (United States) 1982 Scott Hamilton (United States) 1983 Scott Hamilton (United States) 1984 Scott Hamilton (United States) 1985 Alexandr Fadeev (USSR) 1986 Brian Boitano (United States) 1987 Brian Orser (Canada) 1988 Brian Boitano (United States) 1989 Kurt Browning (Canada) 1990 Kurt Browning (Canada) 1991 Kurt Browning (Canada) 1992 Viktor Petrenko (CIS) 1993 Kurt Browning (Canada) 1994 Elvis Stojko (Canada) 1995...
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September 11 Attacks - U.
around and flew it back toward Washington, D.C. Flying low and fast, the airplane hit the Pentagon at 9:37 AM. In a bit of good fortune, the plane crashed into the west side of the building, which had recently been reinforced with stronger construction and blast-resistant windows in order to withstand a terrorist attack. Even so, theplane penetrated three of the Pentagon’s five concentric rings, taking a chunk out of the building and incinerating dozens of offices and the people who worked in t...
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Manhattan Project - U.
other possible uses of nuclear energy, such as using uranium to operate large power plants or, perhaps, as power sources for ships or submarines. Then Nazi Germanyinvaded Poland on September 1, 1939, and Europe plunged into war. The scientists realized that any plans to build large-scale nuclear power plants would have to waituntil the war was over. Two weeks after the invasion of Poland, Hitler made a radio speech in which he threatened Britain with “a weapon against which there is no defense.”...
- Orville Wright.
- Orville Wright - biography.
- Wilbur Wright.
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Telecommunications.
commonly referred to as wireless communications, use technologies such as cordless telephones, cellular radio telephones, pagers, and satellites. Wirelesscommunications offer increased mobility and flexibility. In the future some experts believe that wireless devices will also offer high-speed Internet access. C Wires and Cables Wires and cables were the original medium for telecommunications and are still the primary means for telephone connections. Wireline transmission evolved fromtelegraph...
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Lyndon B.
A1 First Years in Office Johnson quickly made a two-fold reputation. He was a firm supporter of Roosevelt’s program, both domestic and foreign, and he was also a tireless worker on behalf ofthe voters he represented. Often the two activities coincided, as was the case when he helped to bring public power into Texas through the Rural ElectrificationAdministration and the Lower Colorado River Authority. He also secured funds for the building of dams, roads, and other public improvements in his di...