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Northrop Grumman Firebird
The Northrop Grumman Firebird is an intelligence gathering aircraft designed by Northrop Grumman's subsidiary Scaled Composites which can be flown remotely or by a pilot. At Scaled, it is known as the Model 355. It was unveiled on May 9, 2011. It was first flown in February 2010 and is considered to be an optionally piloted vehicle (OPV). Design and development One of the last aircraft designs overseen by Burt Rutan, who retired in April 2011, the Firebird is a medium-altitude long-endurance aircraft designed to fly up to 40 hours at a top speed of at an altitude of . The twin-boom aircraft has a pusher configuration and a long slender (high aspect ratio) wing with a very slight forward sweep angle. It has a wingspan of , a length of , a height of and a payload capacity of . It is powered by a Lycoming TEO-540 flat-six piston engine and has a maximum takeoff weight of . The aircraft has hardpoints to carry weapons, though it is currently unarmed. A new variant with a wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WikiProject Aircraft
A WikiProject, or Wikiproject, is a Wikimedia movement affinity group for contributors with shared goals. WikiProjects are prevalent within the largest wiki, Wikipedia, and exist to varying degrees within Wikimedia project, sister projects such as Wiktionary, Wikiquote, Wikidata, and Wikisource. They also exist in different languages, and translation of articles is a form of their collaboration. During the COVID-19 pandemic, CBS News noted the role of Wikipedia's WikiProject Medicine in maintaining the accuracy of articles related to the disease. Another WikiProject that has drawn attention is WikiProject Women Scientists, which was profiled by ''Smithsonian Magazine, Smithsonian'' for its efforts to improve coverage of women scientists which the profile noted had "helped increase the number of female scientists on Wikipedia from around 1,600 to over 5,000". On Wikipedia Some Wikipedia WikiProjects are substantial enough to engage in cooperative activities with outside organization ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flat-six Engine
A flat-six engine, also known as a horizontally opposed-six, is a six-cylinder piston engine with three cylinders on each side of a central crankshaft. The most common type of flat-six engine is the boxer-six engine, where each pair of opposed cylinders moves inwards and outwards at the same time. The advantages of the flat-six layout are good engine balance (for reduced vibration), a low center of gravity, short length (compared with an inline-six engine) and being well suited to air-cooling. The disadvantages are a large width (which can limit the maximum steering angle when used in a front-engined car), a large intake manifold being required when a central carburetor is used, and duplication of the inlet and outlet connections for water-cooled engines. The first production flat-six engine was in the 1904 ''Wilson-Pilcher 18/24 HP'' car. The most notable use of flat-six engines is the Porsche 911 sports car, which has used flat-six engines continuously since 1963. Several oth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mojave, California
Mojave (formerly Mohave) is an unincorporated community in Kern County, California, United States. Mojave is located east of Bakersfield, and north of Los Angeles, at an elevation of . The town is located in the western region of the Mojave Desert, below and east of Oak Creek Pass and the Tehachapi Mountains. Mojave is on the Pacific Crest Trail. The population was 4,238 at the 2010 census, up from 3,836 at the 2000 census. Telephone numbers in Mojave follow the format (661) 824-xxxx and the area includes three postal ZIP Codes. History The town of Mojave began in 1876 as a construction camp on the Southern Pacific Railroad. From 1884 to 1889, the town was the western terminus of the , twenty-mule team at Harmony Borax Works in Death Valley. It later served as headquarters for construction of the Los Angeles Aqueduct. Mojave Airport: aviation and military use Located near Edwards Air Force Base, Naval Air Weapons Station China Lake, and Palmdale Regional Airport, Mojav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moss Point, Mississippi
Moss Point is a city in Jackson County, Mississippi, United States. The population was 12,147 in 2020, a decline from the figure of 13,704 in 2010. The Moss Point Historic District and several individual buildings are listed on the National Register of Historic Places' Jackson County listings. History On August 29, 2005, Moss Point was hit by the strong east side of Hurricane Katrina, and much of the city was flooded or destroyed (see details below). Moss Point is home to Trent Lott International Airport and the Mississippi Export Railroad. Geography Moss Point is in southeastern Jackson County, on the east side of the Pascagoula River. It is bordered to the south by the city of Pascagoula, the county seat, and to the north by unincorporated Escatawpa. The Escatawpa River flows east–west through the city into the Pascagoula River. U.S. Route 90 forms the southeastern boundary of Moss Point, leading southwestward into Pascagoula and northeastward to Interstate 10, which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palmdale, California
Palmdale is a city in northern Los Angeles County in the U.S. state of California. The city lies in the Antelope Valley region of Southern California. The San Gabriel Mountains separate Palmdale from the Los Angeles Basin to the south. On August 24, 1962, Palmdale became the first city in the Antelope Valley. Forty-seven years later, in November 2009, voters approved making it a charter city. Palmdale's population was 169,450 at the 2020 census, up from 152,750 at the 2010 census. Palmdale is the 32nd most populous city in California. Together with its immediate northern neighbor, the city of Lancaster, the Palmdale/Lancaster urban area had an estimated population of 513,547 as of 2013. History Palmdale was first inhabited by Native Americans. Populated by different cultures for an estimated 11,000 years, the Antelope Valley was a trade route for Native Americans traveling from Arizona and New Mexico to California's coast. Spanish soldier Captain Pedro Fages explored ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Empire Challenge
An empire is a "political unit" made up of several territories and peoples, "usually created by conquest, and divided between a dominant center and subordinate peripheries". The center of the empire (sometimes referred to as the metropole) exercises political control over the peripheries. Within an empire, there is non-equivalence between different populations who have different sets of rights and are governed differently. Narrowly defined, an empire is a sovereign state whose head of state is an emperor; but not all states with aggregate territory under the rule of supreme authorities are called empires or ruled by an emperor; nor have all self-described empires been accepted as such by contemporaries and historians (the Central African Empire, and some Anglo-Saxon kingdoms in early England being examples). There have been "ancient and modern, centralized and decentralized, ultra-brutal and relatively benign" Empires. An important distinction has been between land empires ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
California
California is a state in the Western United States, located along the Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the most populous U.S. state and the 3rd largest by area. It is also the most populated subnational entity in North America and the 34th most populous in the world. The Greater Los Angeles area and the San Francisco Bay Area are the nation's second and fifth most populous urban regions respectively, with the former having more than 18.7million residents and the latter having over 9.6million. Sacramento is the state's capital, while Los Angeles is the most populous city in the state and the second most populous city in the country. San Francisco is the second most densely populated major city in the country. Los Angeles County is the country's most populous, while San Bernardino County is the largest county by area in the country. California borders Oregon to the north, Nevada and Arizona to the ea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sacramento
) , image_map = Sacramento County California Incorporated and Unincorporated areas Sacramento Highlighted.svg , mapsize = 250x200px , map_caption = Location within Sacramento County in California , pushpin_map = California#USA , pushpin_label = Sacramento , pushpin_map_caption = Location within California##Location in the United States , pushpin_relief = yes , coordinates = , coordinates_footnotes = , subdivision_type = Country , subdivision_name = United States , subdivision_type1 = State , subdivision_name1 = California , subdivision_type2 = County , subdivision_name2 = Sacramento ---- , subdivision_type3 = Region , subdivision_name3 = Sacramento Valley , subdivision_type4 = CSA , su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Signals Intelligence
Signals intelligence (SIGINT) is intelligence-gathering by interception of '' signals'', whether communications between people (communications intelligence—abbreviated to COMINT) or from electronic signals not directly used in communication (electronic intelligence—abbreviated to ELINT). Signals intelligence is a subset of intelligence collection management. As classified and sensitive information is usually encrypted, signals intelligence in turn involves the use of cryptanalysis to decipher the messages. Traffic analysis—the study of who is signaling whom and in what quantity—is also used to integrate information again. History Origins Electronic interceptions appeared as early as 1900, during the Boer War of 1899–1902. The British Royal Navy had installed wireless sets produced by Marconi on board their ships in the late 1890s, and the British Army used some limited wireless signalling. The Boers captured some wireless sets and used them to make vital tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radar
Radar is a detection system that uses radio waves to determine the distance ('' ranging''), angle, and radial velocity of objects relative to the site. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, weather formations, and terrain. A radar system consists of a transmitter producing electromagnetic waves in the radio or microwaves domain, a transmitting antenna, a receiving antenna (often the same antenna is used for transmitting and receiving) and a receiver and processor to determine properties of the objects. Radio waves (pulsed or continuous) from the transmitter reflect off the objects and return to the receiver, giving information about the objects' locations and speeds. Radar was developed secretly for military use by several countries in the period before and during World War II. A key development was the cavity magnetron in the United Kingdom, which allowed the creation of relatively small systems with sub-meter resolution ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
High-definition Video
High-definition video (HD video) is video of higher resolution and quality than standard-definition. While there is no standardized meaning for ''high-definition'', generally any video image with considerably more than 480 vertical scan lines (North America) or 576 vertical lines (Europe) is considered high-definition. 480 scan lines is generally the minimum even though the majority of systems greatly exceed that. Images of standard resolution captured at rates faster than normal (60 frames/second North America, 50 fps Europe), by a high-speed camera may be considered high-definition in some contexts. Some television series shot on high-definition video are made to look as if they have been shot on film, a technique which is often known as filmizing. History The first electronic scanning format, 405 lines, was the first ''high definition'' television system, since the mechanical systems it replaced had far fewer. From 1939, Europe and the US tried 605 and 441 lines until, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Forward Looking Infrared
Forward-looking infrared (FLIR) cameras, typically used on military and civilian aircraft, use a thermographic camera that senses infrared radiation. The sensors installed in forward-looking infrared cameras, as well as those of other thermal imaging cameras, use detection of infrared radiation, typically emitted from a heat source (thermal radiation), to create an image assembled for video output. They can be used to help pilots and drivers steer their vehicles at night and in fog, or to detect warm objects against a cooler background. The wavelength of infrared that thermal imaging cameras detect is 3 to 12 μm and differs significantly from that of night vision, which operates in the visible light and near-infrared ranges (0.4 to 1.0 μm). Design Infrared light falls into two basic ranges: ''long-wave'' and ''medium-wave''. Long-wave infrared (LWIR) cameras, sometimes called "far-infrared", operate at 8 to 12 μm and can see heat sources, such as hot e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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