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Agni-IV
Agni-IV ("Fire") is the fourth in the Agni series of missiles which was earlier known as ''Agni II prime''. It has been developed by India's DRDO and displayed a number of new technologies and significant improvement in missile technology. The missile is light-weight and has two stages of solid propulsion and a payload with re-entry heat shield. With 4,000 km range, it is capable of striking targets in nearly all of mainland China, if launched from northeastern part of India. Development This missile is one of a kind, proving many new technologies for the first time, and represents a significant leap in India's missile technology. The missile is lighter in weight and uses a two-stage rocket engine powered by solid propellant. The Composite Rocket Motor which has been used for the first time has given excellent performance. The missile system is equipped with modern and compact avionics with redundancy to provide a high level of reliability. The indigenous-built ring ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abdul Kalam Island
__NOTOC__ Dr. Abdul Kalam Island, formerly known as Wheeler Island, is an island off the coast of Odisha, India, approximately east of the state capital Bhubaneswar. The island was originally named after English commandant Lieutenant Hugh Wheeler. On 4 September 2015, the island was renamed to honour the late Indian president, Dr. A. P. J. Abdul Kalam. The Integrated Test Range missile testing facility is located on the island, and serves as the test facility for most of India's missiles such as the Akash, Agni, Astra, BrahMos, Nirbhay, Prahaar, Prithvi, Shaurya Missile, Advanced Air Defence, Prithvi Air Defence, and ASAT missiles. Geography Abdul Kalam Island is one among a group of five islands located in the Bay of Bengal, approximately off the eastern coast of India, and about south of Chandipur in Balasore district, Odisha. The island is about in length and in area. The nearest port is Dhamra Port. This island belongs to Bhadrak district. Integrated Test Range ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agni (missile)
The Agni missile (अग्नि IAST: Agni ''"Fire"'') is a family of medium to intercontinental range ballistic missiles developed by India, named after one of the five elements of nature. Agni missiles are long range, nuclear weapons capable, surface to surface ballistic missiles. The first missile of the series, Agni-I was developed under the Integrated Guided Missile Development Program (lGMDP) and tested in 1989. After its success, Agni missile program was separated from the GMDP upon realizing its strategic importance. It was designated as a special program in India's defence budget and provided adequate funds for subsequent development. , the missiles in the Agni series are being inducted into service. The family comprises the following: Agni-I The two-stage Agni technology demonstrator, with a solid-fuel first stage, was first tested at the Interim Test Range in Chandipur in 1989. It was capable of carrying a conventional payload of 1,000 kg (2,200 lb) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radar Cross-section
Radar cross-section (RCS), also called radar signature, is a measure of how detectable an object is by radar. A larger RCS indicates that an object is more easily detected. An object reflects a limited amount of radar energy back to the source. The factors that influence this include: *the material with which the target is made; *the size of the target relative to the wavelength of the illuminating radar signal; *the absolute size of the target; *the incident angle (angle at which the radar beam hits a particular portion of the target, which depends upon the shape of the target and its orientation to the radar source); *the reflected angle (angle at which the reflected beam leaves the part of the target hit; it depends upon incident angle); *the polarization of the transmitted and the received radiation with respect to the orientation of the target. While important in detecting targets, strength of emitter and distance are not factors that affect the calculation of an RCS becaus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agni-III
The Agni-III (IAST: Agni, ) is an Indian intermediate-range ballistic missile inducted into service in 2011 as the successor of the Agni-II. It has a range of and can reach targets deep inside neighbouring countries including China. Introduction India's credible minimum deterrence envisaged a nuclear triad of counter-strike capability which required a long-range missile to provide robust second strike capability. India developed a larger missile, with a heavier payload and longer range in a compact configuration. Driven by the need for retaliation to defeat emerging anti-ballistic missile (ABM) defence and countermeasures, this capability requires a compact missile which can carry ABM payloads and weapons in a configuration similar to a MIRV. Description The Agni-III was developed as the successor to the Agni-II. Designed by the Defence Research and Development Organisation (DRDO), Agni-III is a two-stage ballistic missile capable of nuclear weapons delivery. DRDO formed a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agni-II
Agni-II ( IAST: Agni, ), is the second strategic ballistic missile of Agni (missile) family envisaged to be the mainstay of the Indian missile-based strategic nuclear deterrence. The Agni-II is a medium-range ballistic missile (MRBM) with two solid fuel stages and a Post Boost Vehicle (PBV) integrated into the missile's Re-entry Vehicle (RV). The Agni's manoeuvring RV is made of a carbon-carbon composite material that is light and able to sustain high thermal stresses of re-entry, in a variety of trajectories. The Agni-IIA is a more advanced version of Agni-II, albeit with more sophisticated and lighter materials, yielding a better range and operating regime. Agni-IIA was later renamed as Agni-IV plugging the gap between Agni-II and Agni-III. While the first test of Agni-IV in December 2010 was a failure, the second test flight in November 2011 was a success Agni-II, developed as part of medium- and long-range Agni series of missile systems, has already been inducted into the Ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tessy Thomas
Tessy may refer to: People * Tessy Antony de Nassau (born 1985), Luxembourgian businesswoman and non-profit executive, a former member of the Grand Ducal Family of Luxembourg * Tessy Bamberg-Schitter (born 1980), Luxembourgian football midfielder *Tessy María López Goerne (born 1961), Mexican nanotechnologist * Tessy Ojo (born 1971), British-Nigerian charity executive * Tessy Okoli (born c. 1966), Nigerian educator * Tessy Scholtes (born 1981), Luxembourgian karateka and politician * Tessy Thomas (born 1963), Indian scientist *Tessy van de Ven (born 1983), Dutch former professional tennis player Places * Épagny Metz-Tessy, commune in the Haute-Savoie department of southeastern France since 2016 *Metz-Tessy, former commune in the Haute-Savoie department of southeastern France, merged into Épagny Metz-Tessy *Tessy-Bocage, commune in the Manche department of northwestern France since 2016 * Tessy-sur-Vire, former commune in the Manche department of northwestern France, merged into ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agni-V
Agni-V is a nuclear capable intercontinental ballistic missile developed by the Defence Research and Development Organisation RDOof India. The missile is believed to have a range of around 5,000 to 5,500 kilometers. Scientists and experts say that the missile has the range of 8,000 kilometers. It is a three-stage, road-mobile and solid-fueled intercontinental ballistic missile which is transported by a truck and launched via a canister. Development Agni V is primarily for enhancing India's nuclear deterrence against China. Until recently, the longest range missile India had was Agni-III, with a range of 3000–3500 km. If launched from central India this range was not sufficient to reach targets on the extreme eastern and northeastern region of China. Most of the important economic centers of China lay on its eastern seaboard. Senior defence scientist M. Natarajan disclosed in 2007 that DRDO was working on an upgraded version of the Agni III, known as the Agni-V, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Digital Control
Digital control is a branch of control theory that uses digital computers to act as system controllers. Depending on the requirements, a digital control system can take the form of a microcontroller to an ASIC to a standard desktop computer. Since a digital computer is a discrete system, the Laplace transform is replaced with the Z-transform. Since a digital computer has finite precision (''See quantization''), extra care is needed to ensure the error in coefficients, analog-to-digital conversion, digital-to-analog conversion, etc. are not producing undesired or unplanned effects. Since the creation of the first digital computer in the early 1940s the price of digital computers has dropped considerably, which has made them key pieces to control systems because they are easy to configure and reconfigure through software, can scale to the limits of the memory or storage space without extra cost, parameters of the program can change with time (''See adaptive control'') and digital ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ring Laser Gyroscope
A ring laser gyroscope (RLG) consists of a ring laser having two independent counter-propagating resonant modes over the same path; the difference in phase is used to detect rotation. It operates on the principle of the Sagnac effect which shifts the nulls of the internal standing wave pattern in response to angular rotation. Interference between the counter-propagating beams, observed externally, results in motion of the standing wave pattern, and thus indicates rotation. Description The first experimental ring laser gyroscope was demonstrated in the US by Macek and Davis in 1963. Various organizations worldwide subsequently developed ring-laser technology further. Many tens of thousands of RLGs are operating in inertial navigation systems and have established high accuracy, with better than 0.01°/hour bias uncertainty, and mean time between failures in excess of 60,000 hours. Ring laser gyroscopes can be used as the stable elements (for one degree of freedom each) in an ine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Redundancy (engineering)
In engineering, redundancy is the intentional duplication of critical components or functions of a system with the goal of increasing reliability of the system, usually in the form of a backup or fail-safe, or to improve actual system performance, such as in the case of GNSS receivers, or multi-threaded computer processing. In many safety-critical systems, such as fly-by-wire and hydraulic systems in aircraft, some parts of the control system may be triplicated, which is formally termed triple modular redundancy (TMR). An error in one component may then be out-voted by the other two. In a triply redundant system, the system has three sub components, all three of which must fail before the system fails. Since each one rarely fails, and the sub components are expected to fail independently, the probability of all three failing is calculated to be extraordinarily small; it is often outweighed by other risk factors, such as human error. Redundancy may also be known by the terms "m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Avionics
Avionics (a blend word, blend of ''aviation'' and ''electronics'') are the Electronics, electronic systems used on aircraft. Avionic systems include communications, Air navigation, navigation, the display and management of multiple systems, and the hundreds of systems that are fitted to aircraft to perform individual functions. These can be as simple as a searchlight for a police helicopter or as complicated as the tactical system for an airborne early warning platform. History The term "avionics" was coined in 1949 by Philip J. Klass, senior editor at ''Aviation Week & Space Technology'' magazine as a portmanteau of "aviation electronics". Radio communication was first used in aircraft just prior to World War I. The first Airborne radio relay, airborne radios were in zeppelins, but the military sparked development of light radio sets that could be carried by heavier-than-air craft, so that aerial reconnaissance biplanes could report their observations immediately in case ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solid-propellant Rocket
A solid-propellant rocket or solid rocket is a rocket with a rocket engine that uses Rocket propellant#Solid chemical propellants, solid propellants (fuel/oxidizer). The earliest rockets were solid-fuel rockets powered by gunpowder; they were used in warfare by the Mamluk Sultanate, Arabs, Dynasties in Chinese history, Chinese, Ilkhanate, Persians, Mongol Empire, Mongols, and Delhi Sultanate, Indians as early as the 13th century. All rockets used some form of solid or powdered propellant up until the 20th century, when liquid-propellant rockets offered more efficient and controllable alternatives. Solid rockets are still used today in military armaments worldwide, model rockets, solid rocket boosters and on larger applications for their simplicity and reliability. Since solid-fuel rockets can remain in storage for an extended period without much propellant degradation and because they almost always launch reliably, they have been frequently used in military applications such as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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