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RQ-170 Sentinel
The Lockheed Martin RQ-170 Sentinel is an American unmanned aerial vehicle (UAV) developed by Lockheed Martin and operated by the United States Air Force (USAF) for the Central Intelligence Agency (CIA). While the USAF has released few details on the UAV's design or capabilities, defense analysts believe that it is a stealth aircraft fitted with aerial reconnaissance equipment. Introduced in 2007, it was deployed to Afghanistan in late 2007, and to South Korea two years later, in September 2009. Some images and details of the aircraft were released after Iran captured an RQ-170 in 2011. It has a flying wing design, and uses a single engine, speculated to be either a General Electric TF34 turbofan or a Garrett TFE731. Development The RQ-170 Sentinel was developed by Lockheed Martin's Skunk Works as a stealth unmanned aerial vehicle (UAV). Journalists have noted design similarities between the RQ-170 and previous stealth and UAV programs such as the RQ-3 DarkStar and Polecat ... [...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 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'' 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 organizations relevant to the field at issue. For e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lockheed Martin Polecat
The Lockheed Martin Polecat (company designation P-175) was an unmanned aerial vehicle by Lockheed Martin. It was developed by the company's Advanced Development Programs division in Palmdale, California. Design and development Designated P-175, the Polecat was funded internally by Lockheed Martin (as opposed to using United States Government funds) at the beginning of 2005. The prototype was unveiled at the 2006 Farnborough Airshow.Farnborough picture: Lockheed Martin Skunk Works releases picture of secret Polecat UAV " '' |
Infrared
Infrared (IR), sometimes called infrared light, is electromagnetic radiation (EMR) with wavelengths longer than those of visible light. It is therefore invisible to the human eye. IR is generally understood to encompass wavelengths from around 1 millimeter (300 GHz) to the nominal red edge of the visible spectrum, around 700 nanometers (430 THz). Longer IR wavelengths (30 μm-100 μm) are sometimes included as part of the terahertz radiation range. Almost all black-body radiation from objects near room temperature is at infrared wavelengths. As a form of electromagnetic radiation, IR propagates energy and momentum, exerts radiation pressure, and has properties corresponding to both those of a wave and of a particle, the photon. It was long known that fires emit invisible heat; in 1681 the pioneering experimenter Edme Mariotte showed that glass, though transparent to sunlight, obstructed radiant heat. In 1800 the astronomer Sir William Herschel discovered ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electro-optical
Electro–optics is a branch of electrical engineering, electronic engineering, materials science, and material physics involving components, electronic devices such as lasers, laser diodes, LEDs, waveguides, etc. which operate by the propagation and interaction of light with various tailored materials. It is closely related to the branch of optics, involving application of generation of photons, called photonics. It is not only concerned with the "electro–optic effect", since it deals with the interaction between the electromagnetic (optical) and the electrical (electronic) states of materials. Electro-optical devices The electro-optic effect is a change in the optical properties of an optically active material due to interaction with light. This interaction usually results in a change in the birefringence, and not simply the refractive index of the medium. In a Kerr cell, the change in birefringence is proportional to the square of the optical electric field, and the mat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bill Sweetman
Bill Sweetman (born 1956 in Basingstoke, Hampshire, UK) is a former editor for Jane's and currently an editor for Aviation Week group. He is a writer of more than 50 books on military aircraft. He lives in Oakdale, Minnesota. He is noted for his dogged pursuit of the Aurora project. He appeared as an Aerospace Consultant on in the Nova A nova (plural novae or novas) is a transient astronomical event that causes the sudden appearance of a bright, apparently "new" star (hence the name "nova", which is Latin for "new") that slowly fades over weeks or months. Causes of the dramati ... PBS TV program "Battle of the X-Planes" about the Joint Strike Fighter Program.PBSNova transcript "X-planes"/ref> Works Articles written by Sweetman *dead link--> Article written by Sweetman for Janes.com Books (partial; from a 2-page list at ''ThriftBooks.com'' [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zigzag
A zigzag is a pattern made up of small corners at variable angles, though constant within the zigzag, tracing a path between two parallel lines; it can be described as both jagged and fairly regular. In geometry, this pattern is described as a skew apeirogon. From the point of view of symmetry, a regular zigzag can be generated from a simple motif like a line segment by repeated application of a glide reflection. Although the origin of the word is unclear, its first printed appearances were in French-language books and ephemera of the late 17th century. Examples of zigzags The trace of a triangle wave or a sawtooth wave is a zigzag. Pinking shears are designed to cut cloth or paper with a zigzag edge, to lessen fraying. In sewing, a ''zigzag stitch'' is a machine stitch in a zigzag pattern. The zigzag arch is an architectural embellishment used in Islamic, Byzantine, Norman and Romanesque architecture. See also *Serpentine shape *Infinite skew polygon In geometry, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
432d Air Expeditionary Wing
The 432nd Wing is a United States Air Force unit assigned to Air Combat Command at Creech Air Force Base near Indian Springs, Nevada. It flies General Atomics MQ-9 Reaper and RQ-170 Sentinel Unmanned aerial vehicles. The group operates unmanned reconnaissance aircraft which provide real-time reconnaissance, surveillance, and precision attack against fixed and time-critical targets. The 432nd Air Expeditionary Wing is a provisional unit assigned to Air Combat Command and is the designation for components of the 432nd Wing when deployed into combat areas as part of the Global War on Terror. Overview The wing is the first United States Air Force wing dedicated to unmanned aircraft systems: MQ-9 Reaper and RQ-170 Sentinel. The wing stood up 1 May 2007 at Creech Air Force Base, Nevada. The wing has dual reporting responsibilities to Ninth Air Force and U.S. Air Forces Central Command (USAFCENT) (as the 432nd AEW) at Shaw Air Force Base, South Carolina, as well as to Twelfth Air Forc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
General Atomics MQ-9 Reaper
The General Atomics MQ-9 Reaper (sometimes called Predator B) is an unmanned aerial vehicle (UAV) capable of remotely controlled or autonomous flight operations developed by General Atomics Aeronautical Systems (GA-ASI) primarily for the United States Air Force (USAF). The MQ-9 and other UAVs are referred to as Remotely Piloted Vehicles/Aircraft (RPV/RPA) by the USAF to indicate their human ground controllers. The MQ-9 is the first hunter-killer UAV designed for long-endurance, high-altitude surveillance. In 2006, the then– Chief of Staff of the United States Air Force General T. Michael Moseley said: "We've moved from using UAVs primarily in intelligence, surveillance, and reconnaissance roles before Operation Iraqi Freedom, to a true hunter-killer role with the Reaper." The MQ-9 is a larger, heavier, and more capable aircraft than the earlier General Atomics MQ-1 Predator; it can be controlled by the same ground systems used to control MQ-1s. The Reaper has a 950- sh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
General Atomics MQ-1 Predator
The General Atomics MQ-1 Predator (often referred to as the predator drone) is an American remotely piloted aircraft (RPA) built by General Atomics that was used primarily by the United States Air Force (USAF) and Central Intelligence Agency (CIA). Conceived in the early 1990s for aerial reconnaissance and forward observation roles, the Predator carries cameras and other sensors. It was modified and upgraded to carry and fire two AGM-114 Hellfire missiles or other munitions. The aircraft entered service in 1995, and saw combat in the War in Afghanistan (2001–present), war in Afghanistan, War in North-West Pakistan, Pakistan, the NATO intervention in Bosnia, 1999 NATO bombing of Yugoslavia, the Iraq War, Yemen, the 2011 Libyan civil war, the 2014 US-Coalition intervention in Syria, 2014 intervention in Syria, and Somalia. The USAF describes the Predator as a "Tier II" MALE UAS (medium-altitude, long-endurance unmanned aircraft system). The UAS consists of four aircraft or "air ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aircraft Engine
An aircraft engine, often referred to as an aero engine, is the power component of an aircraft propulsion system. Most aircraft engines are either piston engines or gas turbines, although a few have been rocket powered and in recent years many small UAVs have used electric motors. Manufacturing industry In commercial aviation the major Western manufacturers of turbofan engines are Pratt & Whitney (a subsidiary of Raytheon Technologies), General Electric, Rolls-Royce, and CFM International (a joint venture of Safran Aircraft Engines and General Electric). Russian manufacturers include the United Engine Corporation, Aviadvigatel and Klimov. Aeroengine Corporation of China was formed in 2016 with the merger of several smaller companies. The largest manufacturer of turboprop engines for general aviation is Pratt & Whitney. General Electric announced in 2015 entrance into the market. Development history * 1848: John Stringfellow made a steam engine for a 10-foot wingspan mod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kandahar Airfield
Ahmad Shah Baba International Airport, also referred to as Kandahar International Airport ( ps, د کندهار نړيوال هوايي ډګر) and by some military officials as Kandahar Airfield, KAF) , is located about south-east of the city Kandahar in Afghanistan. It serves as the nation's second main international airport and as one of the largest main operating bases, capable of housing up to 250 aircraft of different sizes. The current head of the airport is Maulvi Fathullah Mansour. The airport was designed and built by the United States in the early 1960s. It was occupied by the Soviets during the 1980s Soviet–Afghan War. Following their withdrawal the airport remained in control of Najibullah's government until he stepped down in 1992. Thereafter, local warlords and the Taliban took control of the airport until the American invasion in late 2001. It was also the site of Airstan incident in 1995, as well as the Indian Airlines Flight 814 incident in 1999. Since 2007 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
