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Directed-energy Weapon
A directed-energy weapon (DEW) is a ranged weapon that damages its target with highly focused energy without a solid projectile, including lasers, microwaves, particle beams, and sound beams. Potential applications of this technology include weapons that target personnel, missiles, vehicles, and optical devices."Daily Telegraph, 12th September 2013" ''Golden Eye-style energy beam is developed by Nato scientists'', Oct. 08, 2013"Milsat Magazine, Satnews Daily, June 24th 2009" ''U.S. Navy Laser Versus UAVs... Laser Wins...'', Oct. 08, 2013 In the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Research And Development
Research and development (R&D or R+D), known in Europe as research and technological development (RTD), is the set of innovative activities undertaken by corporations or governments in developing new services or products, and improving existing ones. Research and development constitutes the first stage of development of a potential new service or the production process. R&D activities differ from institution to institution, with two primary models of an R&D department either staffed by engineers and tasked with directly developing new products, or staffed with industrial scientists and tasked with applied research in scientific or technological fields, which may facilitate future product development. R&D differs from the vast majority of corporate activities in that it is not intended to yield immediate profit, and generally carries greater risk and an uncertain return on investment. However R&D is crucial for acquiring larger shares of the market through the marketisation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MANPADS
Man-portable air-defense systems (MANPADS or MPADS) are portable surface-to-air missiles. They are guided weapons and are a threat to low-flying aircraft, especially helicopters. Overview MANPADS were developed in the 1950s to provide military ground forces with protection from jet aircraft. They have received a great deal of attention, partly because armed groups have used them against commercial airliners. These missiles, affordable and widely available through a variety of sources, have been used successfully over the past three decades both in military conflicts, as well as by terrorist organizations. Twenty-five countries, including the United Kingdom, the United States, Poland, Sweden, Russia, and Turkey, produce man-portable air defense systems.CRS RL31741 page 1 Possession, export, and trafficking of such weapons is officially tightly controlled, due to the threat they pose to civil aviation, although such efforts have not always been successful. The missiles are about ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vigilant Eagle
The Vigilant Eagle Airport Protection System is a proposed directed-energy weapon under development by the U.S. military under a Defense Department contract with Raytheon. It would create an invisible microwave dome around an airport that could block missiles heading toward incoming and outgoing aircraft.''Raytheon focuses on non-lethal weapons'',Andrew Johnson, (The Arizona Republic, 09-17-2009) Man-portable air-defense systems (MANPADS) are shoulder-launched surface-to-air missiles (SAMs) that present a tremendous threat to both civilian and military aircraft. It is estimated 700,000 MANPADs have been built and sold across the world, thousands of which are unaccounted for and sold daily on the black market. The U.S. government says these type of weapons have been used in at least 36 attacks on civilian aircraft in the past three decades. A successful attack of this kind would cause more than loss of life. The estimated cost of a four-hour operational shut down of an airport is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Humvee
The High Mobility Multipurpose Wheeled Vehicle (HMMWV; colloquial: Humvee) is a family of light, four-wheel drive, military trucks and utility vehicles produced by AM General. It has largely supplanted the roles previously performed by the original jeep, and others such as the Vietnam War-era M151 jeep, the M561 "Gama Goat", their M718A1 and M792 ambulance versions, the Commercial Utility Cargo Vehicle, and other light trucks. Primarily used by the United States military, it is also used by numerous other countries and organizations and even in civilian adaptations. The Humvee saw widespread use in the Gulf War of 1991, where it navigated the treacherous desert terrain; this usage helped to inspire civilian Hummer versions. The vehicle's original unarmored design was later seen to be inadequate. The vehicle was found to be particularly vulnerable to improvised explosive devices in the Iraq War. The U.S. hastily up-armored select models and replaced front-line units with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CBS News
CBS News is the news division of the American television and radio service CBS. CBS News television programs include the '' CBS Evening News'', '' CBS Mornings'', news magazine programs ''CBS News Sunday Morning'', ''60 Minutes'', and '' 48 Hours'', and Sunday morning political affairs program '' Face the Nation''. CBS News Radio produces hourly newscasts for hundreds of radio stations, and also oversees CBS News podcasts like '' The Takeout Podcast''. CBS News also operates a 24-hour digital news network. Up until April 2021, the president and senior executive producer of CBS News was Susan Zirinsky, who assumed the role on March 1, 2019. Zirinsky, the first female president of the network's news division, was announced as the choice to replace David Rhodes on January 6, 2019. The announcement came amid news that Rhodes would step down as president of CBS News "amid falling ratings and the fallout from revelations from an investigation into sexual misconduct allegation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electromagnetic Shielding
In electrical engineering, electromagnetic shielding is the practice of reducing or blocking the electromagnetic field (EMF) in a space with barriers made of conductive or magnetic materials. It is typically applied to enclosures, for isolating electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs (). Electromagnetic shielding that blocks radio frequency (RF) electromagnetic radiation is also known as RF shielding. EMF shielding serves to minimize electromagnetic interference. The shielding can reduce the coupling of radio waves, electromagnetic fields, and electrostatic fields. A conductive enclosure used to block electrostatic fields is also known as a '' Faraday cage''. The amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of holes in a shield to an incident electro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Raytheon
Raytheon Technologies Corporation is an American multinational aerospace and defense conglomerate headquartered in Arlington, Virginia. It is one of the largest aerospace and defense manufacturers in the world by revenue and market capitalization. In addition, it is one of the largest providers of intelligence services. Raytheon Technologies manufactures aircraft engines, avionics, aerostructures, cybersecurity, guided missiles, air defense systems, satellites, and drones. The company is also a large military contractor, getting a significant portion of its revenue from the U.S. government. The company is the result of the merger of equals between the aerospace subsidiaries of United Technologies Corporation (UTC) and the Raytheon Company, which was completed on April 3, 2020. Before the merger, UTC spun off its non-aerospace subsidiaries Otis Elevator Company and Carrier Corporation. UTC is the nominal survivor of the merger but it changed its name to Raytheon Techn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Active Denial System
The Active Denial System (ADS) is a non-lethal directed-energy weapon developed by the U.S. military, designed for area denial, perimeter security and crowd control. Informally, the weapon is also called the heat ray since it works by heating the surface of targets, such as the skin of targeted human beings. Raytheon had marketed a reduced-range version of this technology. The ADS was deployed in 2010 with the United States military in the Afghanistan War, but was withdrawn without seeing combat. On August 20, 2010, the Los Angeles Sheriff's Department announced its intent to use this technology to control incarcerated people in the Pitchess Detention Center in Los Angeles, stating its intent to use it in "operational evaluation" in situations such as breaking up prisoner fights. As of 2014, the ADS was only a vehicle-mounted weapon, though U.S. Marines and police were both working on portable versions. ADS was developed under the sponsorship of the Department of Defense Non-Le ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radiofrequency
Radio frequency (RF) is the oscillation rate of an alternating electric current or voltage or of a magnetic, electric or electromagnetic field or mechanical system in the frequency range from around to around . This is roughly between the upper limit of audio frequencies and the lower limit of infrared frequencies; these are the frequencies at which energy from an oscillating current can radiate off a conductor into space as radio waves. Different sources specify different upper and lower bounds for the frequency range. Electric current Electric currents that oscillate at radio frequencies (RF currents) have special properties not shared by direct current or lower audio frequency alternating current, such as the 50 or 60 Hz current used in electrical power distribution. * Energy from RF currents in conductors can radiate into space as electromagnetic waves (radio waves). This is the basis of radio technology. * RF current does not penetrate deeply into electrical condu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Space Warfare
Space warfare is hypothetical combat in which one or more belligerents are situated in outer space. The scope of space warfare therefore includes ''ground-to-space warfare'', such as attacking satellites from the Earth; ''space-to-space warfare'', such as satellites attacking satellites; and ''space-to-ground warfare'', such as satellites attacking Earth-based targets. Space warfare in fiction is thus sub-genre and theme of science fiction, where it is portrayed with a range of realism and plausibility. , no actual warfare is known to have taken place in space, though a number of tests and demonstrations have been performed. International treaties are in place that attempt to regulate conflicts in space and limit the installation of space weapon systems, especially nuclear weapons. From 1985 to 2002 there was a United States Space Command, which in 2002 merged with the United States Strategic Command, leaving the United States Space Force (formerly Air Force Space Command un ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bullet Drop
External ballistics or exterior ballistics is the part of ballistics that deals with the behavior of a projectile in flight. The projectile may be powered or un-powered, guided or unguided, spin or fin stabilized, flying through an atmosphere or in the vacuum of space, but most certainly flying under the influence of a gravitational field. Gun-launched projectiles may be unpowered, deriving all their velocity from the propellant's ignition until the projectile exits the gun barrel. However, exterior ballistics analysis also deals with the trajectories of rocket-assisted gun-launched projectiles and gun-launched rockets; and rockets that acquire all their trajectory velocity from the interior ballistics of their on-board propulsion system, either a rocket motor or air-breathing engine, both during their boost phase and after motor burnout. External ballistics is also concerned with the free-flight of other projectiles, such as balls, arrows etc. Forces acting on the projectile W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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