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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 Arme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Republic Day (India)
Republic Day is a public holiday in India where the country marks and celebrates the date on which the Constitution of India came into effect on 26 January 1950. This replaced the Government of India Act 1935 as the governing document of India, thus turning the nation into a republic separate from British Raj. The constitution was adopted by the Indian Constituent Assembly on 26 November 1949 and came into effect on 26 January 1950. 26 January was chosen as the date for Republic Day as it was on that day in 1930 when the Declaration of Indian Independence was proclaimed by the Indian National Congress. History of Republic Day India achieved independence from the British Raj on 15 August 1947 following the Indian independence movement. The independence came through the Indian Independence Act 1947 (10 & 11 Geo 6 c 30), an Act of the Parliament of the United Kingdom that partitioned British India into the two new independent Dominions of the British Commonwealth (later Commonw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thermobaric
A thermobaric weapon, also called an aerosol bomb, a vacuum bomb or a fuel air explosive (FAE), is a type of explosive that uses oxygen from the surrounding air to generate a high-temperature explosion. The fuel–air explosive is one of the best-known types of thermobaric weapons. Thermobaric weapons are almost 100% fuel and as a result are significantly more energetic than conventional explosives of equal weight. Many types of thermobaric weapons can be fitted to hand-held launchers, and can also be launched from airplanes. The largest Russian bomb contains a charge of approximately 7 tons of a liquid fuel that when detonated creates an explosion of 39.9 tons TNT equivalent. Terminology The term ''thermobaric'' is derived from the Greek words for 'heat' and 'pressure': ''thermobarikos'' (θερμοβαρικός), from ''thermos'' (θερμός) 'hot' + ''baros'' (βάρος) 'weight, pressure' + suffix ''-ikos'' (-ικός) '-ic'. Other terms used for the family of weapons ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
India And Weapons Of Mass Destruction
India possesses nuclear weapons and previously developed chemical weapons. Although India has not released any official statements about the size of its nuclear arsenal, recent estimates suggest that India has 160 nuclear weapons and has produced enough weapons-grade plutonium for up to 200 nuclear weapons. In 1999, India was estimated to have of separated reactor-grade plutonium, with a total amount of of civilian plutonium, enough for approximately 1,000 nuclear weapons. India has conducted nuclear weapons tests in a pair of series namely ''Pokhran I'' and '' Pokhran II''. India is a member of three multilateral export control regimes — the Missile Technology Control Regime, Wassenaar Arrangement and Australia Group. It has signed and ratified the Biological Weapons Convention and the Chemical Weapons Convention. India is also a subscribing state to the Hague Code of Conduct. India has signed neither the Comprehensive Nuclear-Test-Ban Treaty nor the Nuclear Non-Pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Air And Space Intelligence Center
The National Air and Space Intelligence Center (NASIC) is the United States Air Force unit for analyzing military intelligence on foreign air and space forces, weapons, and systems. NASIC assessments of aerospace performance characteristics, capabilities, and vulnerabilities are used to shape national security and defense policies and supports weapons treaty negotiations and verification. History In 1917 the Foreign Data Section of the Army Signal Corps’ Airplane Engineering Department was established at McCook Field, and a NASIC predecessor operated the Army Aeronautical Museum of the Material Division, August 22, 1935. The Office of the Chief of Air Corps's Information Division had become the OCAC Intelligence Division by 1939, which transferred into the United States Army Air Forces (USAAF) as AC/AS, Intelligence and was known as A-2 (in April, 1942, the Air Intelligence School was at the Harrisburg Academy.) The United States Army Air Forces evaluated foreign aircraft ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
US Air Force
The United States Air Force (USAF) is the air service branch of the United States Armed Forces, and is one of the eight uniformed services of the United States. Originally created on 1 August 1907, as a part of the United States Army Signal Corps, the USAF was established as a separate branch of the United States Armed Forces in 1947 with the enactment of the National Security Act of 1947. It is the second youngest branch of the United States Armed Forces and the fourth in order of precedence. The United States Air Force articulates its core missions as air supremacy, global integrated intelligence, surveillance and reconnaissance, rapid global mobility, global strike, and command and control. The United States Air Force is a military service branch organized within the Department of the Air Force, one of the three military departments of the Department of Defense. The Air Force through the Department of the Air Force is headed by the civilian Secretary of the Air Force, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agni Missile Range
Agni (English: , sa, अग्नि, translit=Agni) is a Sanskrit word meaning fire and connotes the Vedic fire deity of Hinduism. He is also the guardian deity of the southeast direction and is typically found in southeast corners of Hindu temples. In the classical cosmology of the Indian religions, Agni as fire is one of the five inert impermanent elements ('' pañcabhūtá'') along with space (''ākāśa''), water (''ap''), air (''vāyu'') and earth (''pṛthvī''), the five combining to form the empirically perceived material existence (''Prakṛti''). In Vedic literature, Agni is a major and oft-invoked god along with Indra and Soma. Agni is considered the mouth of the gods and goddesses and the medium that conveys offerings to them in a ''homa'' (votive ritual). He is conceptualized in ancient Hindu texts to exist at three levels, on earth as fire, in the atmosphere as lightning, and in the sky as the sun. This triple presence accords him as the messenger between the ... [...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-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 la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thermal Stress
In mechanics and thermodynamics, thermal stress is mechanical stress created by any change in temperature of a material. These stresses can lead to fracturing or plastic deformation depending on the other variables of heating, which include material types and constraints. Temperature gradients, thermal expansion or contraction and thermal shocks are things that can lead to thermal stress. This type of stress is highly dependent on the thermal expansion coefficient which varies from material to material. In general, the greater the temperature change, the higher the level of stress that can occur. Thermal shock can result from a rapid change in temperature, resulting in cracking or shattering. Temperature gradients When a material is rapidly heated or cooled, the surface and internal temperature will have a difference in temperature. Quick heating or cooling causes thermal expansion or contraction respectively, this localized movement of material causes thermal stresses. Imagin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carbon Composite
Carbon fiber-reinforced polymers (American English), carbon-fibre-reinforced polymers (Commonwealth English), carbon-fiber-reinforced plastics, carbon-fiber reinforced-thermoplastic (CFRP, CRP, CFRTP), also known as carbon fiber, carbon composite, or just carbon, are extremely strong and light fiber-reinforced plastics that contain carbon fibers. CFRPs can be expensive to produce, but are commonly used wherever high strength-to-weight ratio and stiffness (rigidity) are required, such as aerospace, superstructures of ships, automotive, civil engineering, sports equipment, and an increasing number of consumer and technical applications. The binding polymer is often a thermoset resin such as epoxy, but other thermoset or thermoplastic polymers, such as polyester, vinyl ester, or nylon, are sometimes used. The properties of the final CFRP product can be affected by the type of additives introduced to the binding matrix (resin). The most common additive is silica, but other additi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Deterrence
Deterrence theory refers to the scholarship and practice of how threats or limited force by one party can convince another party to refrain from initiating some other course of action. The topic gained increased prominence as a military strategy during the Cold War with regard to the use of nuclear weapons and is related to but distinct from the concept of mutual assured destruction, which models the preventative nature of full-scale nuclear attack that would devastate both parties in a nuclear war. The central problem of deterrence revolves around how to credibly threaten military action or nuclear punishment on the adversary despite its costs to the deterrer. Deterrence is widely defined as any use of threats (implicit or explicit) or limited force intended to dissuade an actor from taking an action (i.e. maintain the status quo). Deterrence is unlike compellence, which is the attempt to get an actor (such as a state) to take an action (i.e. alter the status quo). Both are f ... [...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] |
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