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Project Devil
Project Devil was one of two early liquid-fueled missile projects developed by India, along with Project Valiant, in the 1970s. The goal of Project Devil was to produce a short-range surface-to-surface missile. Although discontinued in 1980 without achieving full success, Project Devil led to the later development of the Prithvi missile in the 1980s. Development Both projects were overseen by the Defense Research & Development Laboratory (DRDL) of India, which had begun in 1958 with a specialization in anti-tank missiles but expanded in subsequent years. Project Devil was intended to be a short-range surface-to-air missile utilizing 3-ton engines. The model for Project Devil was the SA-2 Guideline, a Soviet Union missile which the DRDL intended to reverse engineer. Project Devil was officially launched under V.S. Narayanan, who became director of the DRDL in January 1972. In June 1972, DRDL received 160 million rupees to fund both Project Devil and Project Valiant, though it c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Liquid-fuel Rocket
A liquid-propellant rocket or liquid rocket utilizes a rocket engine that uses liquid propellants. Liquids are desirable because they have a reasonably high density and high specific impulse (''I''sp). This allows the volume of the propellant tanks to be relatively low. It is also possible to use lightweight centrifugal turbopumps to pump the rocket propellant from the tanks into the combustion chamber, which means that the propellants can be kept under low pressure. This permits the use of low-mass propellant tanks that do not need to resist the high pressures needed to store significant amounts of gasses, resulting in a low mass ratio for the rocket. An inert gas stored in a tank at a high pressure is sometimes used instead of pumps in simpler small engines to force the propellants into the combustion chamber. These engines may have a higher mass ratio, but are usually more reliable, and are therefore used widely in satellites for orbit maintenance. Liquid rockets can be m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indira Gandhi
Indira Priyadarshini Gandhi (; ''née'' Nehru; 19 November 1917 – 31 October 1984) was an Indian politician and a central figure of the Indian National Congress. She was elected as third prime minister of India in 1966 and was also the first and, to date, only female prime minister of India. Gandhi was the daughter of Jawaharlal Nehru, the first prime minister of India. She served as prime minister from January 1966 to March 1977 and again from January 1980 until her assassination in October 1984, making her the second longest-serving Indian prime minister after her father. During Nehru's premiership from 1947 to 1964, Gandhi was considered a key assistant and accompanied him on his numerous foreign trips. She was elected president of the Indian National Congress in 1959. Upon her father's death in 1964, she was appointed as a member of the Rajya Sabha (upper house) and became a member of Lal Bahadur Shastri's cabinet as Minister of Information and Broadcastin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IGMDP
The Integrated Guided Missile Development Programme (IGMDP) was an Indian Ministry of Defence programme for the research and development of the comprehensive range of missiles. The programme was managed by the Defence Research and Development Organisation (DRDO) and Ordnance Factories Board in partnership with other Indian government political organisations. The project started in 1982–83 under the leadership of Abdul Kalam who oversaw its ending in 2008 after these strategic missiles were successfully developed. On 8 January 2008, the DRDO formally announced the successful rated guided missile programme was completed with its design objectives achieved since most of the missiles in the programme had been developed and inducted by the Indian armed forces. History By the start of the 1980s, the DRDL had developed competence and expertise in the fields of propulsion, navigation and manufacture of aerospace materials based on the Soviet rocketry technologies. Thus, India's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Daily Star (Bangladesh)
''The Daily Star'' is a leading Bangladeshi English-language daily newspaper. It is the largest circulating daily English-language newspaper in the country. Founded by Syed Mohammed Ali on 14 January 1991, as Bangladesh transitioned and restored parliamentary democracy, the newspaper became popular for its outspoken coverage of politics, corruption and foreign policy. It is considered a newspaper of record for Bangladesh. The newspaper is known for its "reputation for journalistic integrity and liberal and progressive views - a kind of Bangladeshi ''New York Times''". Its slogan is "Journalism Without Fear or Favour". Mahfuz Anam serves as editor and publisher of ''The Daily Star''. Its motto, "Your Right to Know", appears above its logo on the front page. ''The Daily Star'' is owned by Mediaworld, in which a major share is held by the Transcom Group. ''Star Business'' is the business edition of the paper and highly popular. History In the late 1980s, plans for a major Eng ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Praful Bidwai
Praful Bidwai (12 June 1949 – 23 June 2015) was an Indian journalist, political analyst, and activist. He was known for his left-leaning analysis of India's politics and economics. In Bidwai's memory, his friends, including The Transnational Institute, created the Praful Bidwai Memorial Award intended to honor and highlight courageous and independent voices in journalism. Journalist and columnist Praful Bidwai was a political analyst and commentator, a social science researcher, and an activist on issues of peace, global justice, human rights and environmental protection. He died of a cardiac arrest on 23 June 2015 while he was attending a conference in Amsterdam. Bidwai's journalistic career spanned over four decades. His first notable work in journalism was as a columnist for the "Economic and Political Weekly", beginning in 1972. He then worked for magazines and newspapers including "Business India", "Financial Express" and "The Times of India" between 1981 and 1993, event ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Red Fuming Nitric Acid
Red fuming nitric acid (RFNA) is a storable oxidizer used as a rocket propellant. It consists of 84% nitric acid (), 13% dinitrogen tetroxide and 1–2% water. The color of red fuming nitric acid is due to the dinitrogen tetroxide, which breaks down partially to form nitrogen dioxide. The nitrogen dioxide dissolves until the liquid is saturated, and produces toxic fumes with a suffocating odor. RFNA increases the flammability of combustible materials and is highly exothermic when reacting with water. It is usually used with an inhibitor (with various, sometimes secret, substances, including hydrogen fluoride; any such combination is called ''inhibited RFNA'', ''IRFNA'') because nitric acid attacks most container materials. Hydrogen fluoride for instance will passivate the container metal with a thin layer of metal fluoride, making it nearly impervious to the nitric acid. It can also be a component of a monopropellant; with substances like amine nitrates dissolved in it, it ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxidizing Agent
An oxidizing agent (also known as an oxidant, oxidizer, electron recipient, or electron acceptor) is a substance in a redox chemical reaction that gains or " accepts"/"receives" an electron from a (called the , , or ). In other words, an oxidizer is any substance that oxidizes another substance. The oxidation state, which describes the degree of loss of electrons, of the oxidizer decreases while that of the reductant increases; this is expressed by saying that oxidizers "undergo reduction" and "are reduced" while reducers "undergo oxidation" and "are oxidized". Common oxidizing agents are oxygen, hydrogen peroxide and the halogens. In one sense, an oxidizing agent is a chemical species that undergoes a chemical reaction in which it gains one or more electrons. In that sense, it is one component in an oxidation–reduction (redox) reaction. In the second sense, an oxidizing agent is a chemical species that transfers electronegative atoms, usually oxygen, to a substrate. Comb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Specific Impulse
Specific impulse (usually abbreviated ) is a measure of how efficiently a reaction mass engine (a rocket using propellant or a jet engine using fuel) creates thrust. For engines whose reaction mass is only the fuel they carry, specific impulse is exactly proportional to the effective exhaust gas velocity. A propulsion system with a higher specific impulse uses the mass of the propellant more efficiently. In the case of a rocket, this means less propellant needed for a given delta-v, so that the vehicle attached to the engine can more efficiently gain altitude and velocity. In an atmospheric context, specific impulse can include the contribution to impulse provided by the mass of external air that is accelerated by the engine in some way, such as by an internal turbofan or heating by fuel combustion participation then thrust expansion or by external propeller. Jet engines breathe external air for both combustion and by-pass, and therefore have a much higher specific impulse than ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solid Rocket Booster
A solid rocket booster (SRB) is a large solid propellant motor used to provide thrust in spacecraft launches from initial launch through the first ascent. Many launch vehicles, including the Atlas V, SLS and space shuttle, have used SRBs to give launch vehicles much of the thrust required to place the vehicle into orbit. The space shuttle used two space shuttle SRBs, which were the largest solid propellant motors ever built and the first designed for recovery and reuse. The propellant for each solid rocket motor on the space shuttle weighed approximately 500,000 kilograms.. Advantages Compared to liquid propellant rockets, the solid-propellant motors SRMs have been capable of providing large amounts of thrust with a relatively simple design. They provide greater thrust without significant refrigeration and insulation requirements, and produce large amounts of thrust for their size. Adding detachable SRBs to a vehicle also powered by liquid-propelled rockets known as stagin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indian Space Research Organisation
The Indian Space Research Organisation (ISRO; ) is the national space agency of India, headquartered in Bengaluru. It operates under the Department of Space (DOS) which is directly overseen by the Prime Minister of India, while the Chairman of ISRO acts as the executive of DOS as well. ISRO is India's primary agency for performing tasks related to space-based applications, space exploration and the development of related technologies. It is one of six government space agencies in the world which possess full launch capabilities, deploy cryogenic engines, launch extraterrestrial missions and operate large fleets of artificial satellites. The Indian National Committee for Space Research (INCOSPAR) was established by Jawaharlal Nehru under the Department of Atomic Energy (DAE) in 1962, on the urging of scientist Vikram Sarabhai, recognising the need in space research. INCOSPAR grew and became ISRO in 1969, within DAE. In 1972, the government of India set up a Space Commissi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bharat Heavy Electricals Limited
Bharat Heavy Electricals Limited (BHEL) is an Indian central public sector undertaking. It is under the ownership of Ministry of Heavy Industries, Government of India. It is based in New Delhi, India. Established in 1956, BHEL is India's largest government owned power generation equipment manufacturer. History BHEL was established in 1956 ushering in the heavy electrical equipment industry in India. Heavy Electricals (India) Limited was merged with BHEL in 1974. When it was set up in 1956, BHEL was envisaged as a plain manufacturing PSU, with technological help from the Soviet Union. In 1980's it was cutting edge in thyristor technology. In 1991, BHEL was converted into a public company. Over time, it developed the capability to produce a variety of electrical, electronic, and mechanical equipment for various sectors, including transmission, transportation, oil and gas, and other allied industries. However, the bulk of the company's revenue is still derived from the s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hindustan Aeronautics Limited
Hindustan Aeronautics Limited (HAL) is an Indian state-owned aerospace and defence company, headquartered in Bangalore, India. Established on 23 December 1940, HAL is one of the oldest and largest aerospace and defence manufacturers in the world today. HAL began aircraft manufacturing as early as 1942 with licensed production of Harlow PC-5, Curtiss P-36 Hawk and Vultee A-31 Vengeance for the Indian Air Force. HAL currently has 11 dedicated Research and development (R&D) centers and 21 manufacturing divisions under 4 production units spread across India. HAL is managed by a Board of Directors appointed by the President of India through the Ministry of Defence, Government of India. HAL is currently involved in designing and manufacturing of fighter jets, helicopters, jet engine and marine gas turbine engine, avionics, software development, spares supply, overhauling and upgrading of Indian military aircraft. The HAL HF-24 Marut fighter-bomber was the first indigenous fighter air ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
