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Gamma 60 Wind Turbine
The Gamma 60 wind turbine, a 1.5 Megawatt, MW two-bladed upwind horizontal axis wind turbine, was installed by Wind Energy Systems Taranto S.p.A. (WEST) at Alta Nurra, Sardinia, Italy in April 1992. Founded on original research and development work by NASA and Hamilton Standard (then a division of United Technologies Corporation), the Gamma 60 wind turbine was the world's first variable speed wind turbine with a teetering hinge. The Gamma 60 wind turbine was commissioned to assess the feasibility and performance of power regulation through yaw control, rather than industry-standard blade pitch control, including broad range variable speed in a two-bladed teetering hinge wind turbine. The WEST Gamma 60 wind turbine project team included Hamilton Standard, ENEL, Aeritalia, Finmeccanica (now Leonardo S.p.A.), ENEA (Italy), and Sulzer (manufacturer), Sulzer. Three Gamma turbines were manufactured, and one was erected and successfully tested from 1992 - 1997 on the Mediterranean i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nurra
The Nurra is a geographical region in the northwest of Sardinia, Italy. It is the second largest plain of the island, located between the towns of Sassari, Porto Torres and Alghero. It covers a surface of 700 km² and is bounded by the Sardinian Sea on the west and by the Gulf of Asinara on the north. Nurra was once an important mining center, with Argentiera being the principal village, though today it is a ghost town. The Nurra, before the works of land reclamation initiated under Fascism (which were also continued in after World War II by the ETFAS, Ente Trasformazione Fondiaria Agricola Sarda), and despite being next to one of the most populated areas of Sardinia, has one of the lowest population densities in Italy, with 5 inhabitants per km², primarily, due to the drought and to the presence of malaria, eliminated only in the 20th century. History In the Middle Ages Nurra was a ''curatoria'' in the Giudicato di Torres, rich with salt mills and silver mines. Fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kurt Hohenemser
Kurt Heinrich Hohenemser (January 3, 1906 – April 7, 2001) was a German-born American Aerospace engineering, aerospace engineer and pioneer in the field of helicopter design. Life in Germany Kurt Hohenemser was born on January 3, 1906, in Berlin, Germany, to the German Jewish Musicology, musicologist Richard Hohenemser and his English wife Alice Salt.Szabó, Anikó. ''Vertreibung, Rückkehr, Wiedergutmachung: Göttinger Hochschullehrer im Schatten des Nationalsozialismus.'' Göttingen, Germany: Wallstein, 2000. He received his secondary education from the Goethe-Schule in Wilmersdorf, Berlin-Wilmersdorf, Hermann-Lietz-Schule Haubinda, and Ziehenschule in Eschersheim. In 1924, Hohenemser received his Abitur. Hohenemser attended university at the Technische Universität Darmstadt, Technische Hochschule Darmstadt from 1924 to 1929, receiving his Engineer's degree, Diplom-Ingenieur in 1927 and his Doktoringenieur in 1929. From 1930 until 1933, Hohenemser taught and conducted researc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Korean War
{{Infobox military conflict , conflict = Korean War , partof = the Cold War and the Korean conflict , image = Korean War Montage 2.png , image_size = 300px , caption = Clockwise from top:{{Flatlist, * A column of the U.S. 1st Marine Division's infantry and armor moves through Chinese lines during their breakout from the Chosin Reservoir * UN landing at Incheon harbor, starting point of the Battle of Incheon * Korean refugees in front of a U.S. M46 Patton tank * U.S. Marines, led by First Lieutenant Baldomero Lopez, landing at Incheon * F-86 Sabre fighter aircraft , date = {{Ubl, 25 June 1950 – 27 July 1953 (''de facto'')({{Age in years, months, weeks and days, month1=6, day1=25, year1=1950, month2=7, day2=27, year2=1953), 25 June 1950 – present (''de jure'')({{Age in years, months, weeks and days, month1=6, day1=25, year1=1950) , place = Korean Peninsula, Yellow Sea, Sea of Japan, K ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bell 47
The Bell 47 is a single-rotor single-engine light helicopter manufactured by Bell Helicopter. It was based on the third Bell 30 prototype, which was the company's first helicopter designed by Arthur M. Young. The 47 became the first helicopter certified for civilian use on 8 March 1946."Bell Helicopters" Helicopter History Site."Biography of ARTHUR MIDDLETON YOUNG" The first civilian delivery was made on 31 December 1946 to Helicopter Air Transport. More than 5,600 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bell Helicopter
Bell Textron Inc. is an American aerospace manufacturer headquartered in Fort Worth, Texas. A subsidiary of Textron, Bell manufactures military rotorcraft at facilities in Fort Worth, and Amarillo, Texas, as well as commercial helicopters in Mirabel, Quebec, Canada. History Bell Aircraft The company was founded on July 10, 1935, as Bell Aircraft Corporation by Lawrence Dale Bell in Buffalo, New York. The company focused on the designing and building of fighter aircraft. Their first fighters were the XFM-1 Airacuda, a twin-engine fighter for attacking bombers, and the P-39 Airacobra. The P-59 Airacomet, the first American jet fighter, the P-63 Kingcobra, the successor to the P-39, and the Bell X-1 were also Bell products.History of Bell Helicopter . bellhelicopter.com [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bell 47 (H-13G) Medevac Inflight Bw
The Bell 47 is a single-rotor single-engine light helicopter manufactured by Bell Helicopter. It was based on the third Bell 30 prototype, which was the company's first helicopter designed by Arthur M. Young. The 47 became the first helicopter certified for civilian use on 8 March 1946."Bell Helicopters" Helicopter History Site."Biography of ARTHUR MIDDLETON YOUNG" The first civilian delivery was made on 31 December 1946 to . [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doman LZ-5
The Doman LZ-5 was a utility helicopter developed in the United States in the early 1950s by Doman Helicopters Inc. of Danbury, Connecticut. Despite the procurement of international manufacturing agreements, no series production of the aircraft ever occurred, and only three prototypes were built. Two of these were purchased by the United States Army as the YH-31, but eventually becoming VH-31. Development Like the preceding LZ-1 through LZ-4, the LZ-5 utilized designer Glidden Doman's unorthodox gimbaled rotor head system, which featured the elimination of rotor hinges and dampers and included blades of soft-in-plane dynamic design. The servo control system was entirely contained within the rotor head, with no external oil tanks or plumbing. The tail rotor was also hingeless and free floating to eliminate stresses in rapid tail rotor turns. In other ways, it had a conventional helicopter main rotor and tail rotor configuration. The pilot and co-pilot were seated over the e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doman LZ-4
__NOTOC__ The Doman LZ-4 was an American eight-seat helicopter designed and developed by Doman Helicopters of Danbury, Connecticut. Design and development Following the test flying of the Doman LZ-2A __NOTOC__ The Doman LZ-2A Pelican was an American five-seat helicopter designed and developed by Doman Helicopters of Danbury, Connecticut. Design and development Following the test flying of a Doman-designed rotor on a modified Sikorsky R-6 (des ..., Doman Helicopters developed an eight-seat helicopter with the designation LZ-4. The fuselage had 3 rows of double seats in the main cabin and a two-crew flight deck in the front. Large folding doors allowed for loading bulky cargo into the main compartment. The tail boom was conventional with a cranked-up rear section mounting a tail rotor, and the helicopter was supported by a four-leg undercarriage.R.Simpson "Airlife's Helicopter and Rotorcraft", 1998 Specifications (LZ-4) References {{Doman aircraft 1940s United States exp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doman LZ-1A
The Sikorsky R-6 is an American light two-seat helicopter of the 1940s. In Royal Air Force and Royal Navy service, it was named the Hoverfly II. Development The R-6/Hoverfly II was developed to improve on the successful Sikorsky R-4. In order to enhance performance, a completely new streamlined fuselage was designed and the boom carrying the tail rotor was lengthened and straightened. The main rotor and transmission system of the R-4 were retained. Sikorsky allotted their Model 49 designation to the new design. Later, dynamically-balanced modifications to the rotor were carried out by Doman Helicopters Inc. The new aircraft could attain compared with by the earlier design. Initial production was by Sikorsky, but most examples were built by Nash-Kelvinator. Some of the later aircraft were fitted with more powerful engines. Operational history The first R-6s were delivered to the United States Army Air Forces (USAAF) in late 1944 and some were transferred to the United States N ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Igor Sikorsky
Igor Ivanovich Sikorsky (russian: И́горь Ива́нович Сико́рский, p=ˈiɡərʲ ɪˈvanəvitʃ sʲɪˈkorskʲɪj, a=Ru-Igor Sikorsky.ogg, tr. ''Ígor' Ivánovich Sikórskiy''; May 25, 1889 – October 26, 1972)Fortier, Rénald"Igor Sikorsky: One Man, Three Careers." ''aviation.technomuses.ca,''1996. Retrieved: October 29, 2008. was a Russian–American"Britannica Concise Encyclopedia" Encyclopædia Britannica, Inc. 2006, p. 1751. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lockheed Martin
The Lockheed Martin Corporation is an American aerospace, arms, defense, information security, and technology corporation with worldwide interests. It was formed by the merger of Lockheed Corporation with Martin Marietta in March 1995. It is headquartered in North Bethesda, Maryland, in the Washington, D.C. area. Lockheed Martin employs approximately 115,000 employees worldwide, including about 60,000 engineers and scientists as of January 2022. Lockheed Martin is one of the largest companies in the aerospace, military support, security, and technologies industry. It is the world's largest defense contractor by revenue for fiscal year 2014.POC Top 20 Defence Contractors of 2014 . Retrieved: July 2015 In 2013, 78% of Lockheed Martin's revenues came from military sales; [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sikorsky Aircraft
Sikorsky Aircraft is an American aircraft manufacturer based in Stratford, Connecticut. It was established by aviation pioneer Igor Sikorsky in 1923 and was among the first companies to manufacture helicopters for civilian and military use. Previously owned by United Technologies Corporation, in November 2015 Sikorsky was sold to Lockheed Martin. History On 5 March 1923, the Sikorsky Aero Engineering Corporation was founded near Roosevelt Field, New York, by Igor Sikorsky, an immigrant to the United States who was born in Kyiv.S-38, the company was reorganized as the Sikorsky Aviation Corporation with capital of $5,000,000, allowing the purchase of land and the building of a modern aircraft factory in Stratford. In 1929, the company moved to Stratford, Connecticut, and it became a part of United Aircraft and Transport Corporation (later United Technologies Corporation or UTC) in July of that year.Spenser 1998 In the United States, Igor Sikorsky originally concentrated on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
