|
HAL Tejas
The HAL Tejas is an Indian, single engine, delta wing, light multirole fighter designed by the Aeronautical Development Agency (ADA) in collaboration with Aircraft Research and Design Centre (ARDC) of Hindustan Aeronautics Limited (HAL) for the Indian Air Force and Indian Navy. It came from the Light Combat Aircraft (LCA) programme, which began in the 1980s to replace India's ageing MiG-21 fighters but later became part of a general fleet modernisation programme. In 2003, the LCA was officially named "Tejas". It is the smallest and lightest in its class of contemporary supersonic combat aircraft. The Tejas is the second supersonic fighter developed by HAL after the HAL HF-24 Marut. The Tejas achieved initial operational clearance in 2011 and final operational clearance in 2019. The first Tejas squadron became operational in 2016, as No. 45 Squadron IAF ''Flying Daggers'' was the first to have their MiG-21s replaced with the Tejas. The Tejas currently has three production mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Multirole Combat Aircraft
A multirole combat aircraft (MRCA) is a combat aircraft intended to perform different roles in combat. These roles can include air to air combat, air support, aerial bombing, reconnaissance, electronic warfare, and suppression of air defenses. Definition The term "multirole" was originally reserved for aircraft designed with the aim of using a common airframe for multiple tasks where the same basic airframe is adapted to a number of differing roles. The main motivation for developing multirole aircraft is cost reduction in using a common airframe. More roles can be added, such as aerial reconnaissance, forward air control, and electronic-warfare aircraft. Attack missions include the subtypes air interdiction, suppression of enemy air defense (SEAD), and close air support (CAS). Multirole has also been applied to one aircraft with both major roles, a primary air-to-air combat role, and a secondary role like air-to-surface attack. However, those designed with an emphasis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ThePrint
The Print is an Indian online newspaper, owned by Printline Media Pvt Ltd. It was launched by journalist Shekhar Gupta in August 2017. History Printline Media Pvt. Ltd, founded by journalist Shekhar Gupta, was incorporated in New Delhi, India in 16th of September 2016. ThePrint is noted for focusing on politics and policy. The venture is associated with the ''Off the Cuff'' programme that is broadcast on Aaj Tak and promoted on ThePrint's YouTube and Facebook channels. In May 2017, It has received an undisclosed amount of funding from N.R. Narayana Murthy, Nandan Nilekani, Ratan Tata, Kiran Mazumdar Shaw, Uday Kotak, Vijay Shekhar Sharma, Rajiv C. Mody, Ravi Thakran, Bhavish Aggarwal, Nirmal Jain, R. Venkatraman, Karan Bhagat and Yatin Shah. Gupta, as his position in editor-in-chief, in a letter to readers stated the mission of the ThePrint was to be "factual and liberal". ThePrint has claimed to commit to its code of ethics for journalists which it has published on its ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kota Harinarayana
Kota Harinarayana (born 1943 in Brahmapur, Odisha) is an aviation engineer. He was born in Brahmapur on the border of Odisha and Andhra Pradesh into a Telugu speaking family. He was appointed as chairman of the board of governors of IIT (BHU), Varanasi by Hon'ble President of India on 25 August 2020 for three years. He was the vice-chancellor of the University of Hyderabad and the president of the Aeronautical Society of India. He completed his schooling from City High School, Brahmapur. He obtained his bachelor's degree in mechanical engineering from Indian Institute of Technology (BHU) Varanasi in 1964, and received master's degree in Aerospace Engineering from Indian Institute of Science. He got his Ph.D from IIT Bombay. He also holds a bachelor's degree in law. He was programme director and chief designer of India's Light Combat Aircraft (LCA) Tejas Programme. Awards and honours * Distinguished Scientist Award, Defence Research Development Organization, India * Padma S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Relaxed Static Stability
In aviation, relaxed stability refers to an aircraft with low or negative stability. An aircraft with negative stability will have a tendency to change its pitch and bank angles spontaneously. An aircraft with negative stability cannot be trimmed to maintain a certain attitude, and will, when disturbed in pitch or roll, continue to pitch or roll in the direction of the disturbance at an ever-increasing rate. This can be contrasted with the behaviour of an aircraft with positive stability, which can be trimmed to fly at a certain attitude, which it will continue to maintain in the absence of control input, and, if perturbed, will oscillate in simple harmonic motion on a decreasing scale around, and eventually return to, the trimmed attitude. A positively stable aircraft will also resist any bank movement. A Cessna 152 is an example of a stable aircraft. Similarly, an aircraft with neutral stability will not return to its original attitude without control input, but will continue ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Delta Wing
A delta wing is a wing shaped in the form of a triangle. It is named for its similarity in shape to the Greek uppercase letter delta (Δ). Although long studied, it did not find significant applications until the Jet Age, when it proved suitable for high-speed subsonic and supersonic flight. At the other end of the speed scale, the Rogallo flexible wing proved a practical design for the hang glider and other ultralight aircraft. The delta wing form has unique aerodynamic characteristics and structural advantages. Many design variations have evolved over the years, with and without additional stabilising surfaces. General characteristics Structure The long root chord of the delta wing and minimal structure outboard make it structurally efficient. It can be built stronger, stiffer and at the same time lighter than a swept wing of equivalent lifting capability. Because of this it is easy and relatively inexpensive to build – a substantial factor in the success of the Mi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flight International
''Flight International'' is a monthly magazine focused on aerospace. Published in the United Kingdom and founded in 1909 as "A Journal devoted to the Interests, Practice, and Progress of Aerial Locomotion and Transport", it is the world's oldest continuously published aviation news magazine. ''Flight International'' is published by DVV Media Group. Competitors include Jane's Information Group and ''Aviation Week''. Former editors of, and contributors include H. F. King, Bill Gunston, John W. R. Taylor and David Learmount. History The founder and first editor of ''Flight'' was Stanley Spooner. He was also the creator and editor of ''The Automotor Journal'', originally titled ''The Automotor Journal and Horseless Vehicle''.Guide To British Industrial History: Biographies: ''Stan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dassault
Dassault Group (; also GIM Dassault or Groupe Industriel Marcel Dassault SAS) is a French group of companies established in 1929 with the creation of Société des Avions Marcel Bloch (now Dassault Aviation) by Marcel Dassault, and led by son Serge Dassault with co-founder of Dassault Systèmes Charles Edelstenne. Currently, Dassault Aviation Chairman and CEO is Éric Trappier. According to Challenges, the Dassault family's combined net worth is estimated at around 23.5 billion euros. Subsidiaries *Dassault Aviation **Dassault Falcon Jet **Dassault Falcon Service **Sogitec (simulation and integrated logistic support systems) *Dassault Systèmes (software and PLM development solutions) *Société de Véhicules Electriques (SVE), a joint venture between Dassault and Heuliez for the development of electric and plug-in electric hybrid vehicles (Cleanova II based on Renault Kangoo), its president and CEO is Gérard Thery. In 2010, Dow Kokam LLC acquires SVE, though Dassault Grou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Specification
A specification often refers to a set of documented requirements to be satisfied by a material, design, product, or service. A specification is often a type of technical standard. There are different types of technical or engineering specifications (specs), and the term is used differently in different technical contexts. They often refer to particular documents, and/or particular information within them. The word ''specification'' is broadly defined as "to state explicitly or in detail" or "to be specific". A requirement specification is a documented requirement, or set of documented requirements, to be satisfied by a given material, design, product, service, etc. It is a common early part of engineering design and product development processes in many fields. A functional specification is a kind of requirement specification, and may show functional block diagrams. A design or product specification describes the features of the ''solutions'' for the Requirement Specification, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Hindu
''The Hindu'' is an Indian English-language daily newspaper owned by The Hindu Group, headquartered in Chennai, Tamil Nadu. It began as a weekly in 1878 and became a daily in 1889. It is one of the Indian newspapers of record and the second most circulated English-language newspaper in India, after '' The Times of India''. , ''The Hindu'' is published from 21 locations across 11 states of India. ''The Hindu'' has been a family-owned newspaper since 1905, when it was purchased by S. Kasturi Ranga Iyengar from the original founders. It is now jointly owned by Iyengar's descendants, referred to as the "Kasturi family", who serve as the directors of the holding company. The current chairperson of the group is Malini Parthasarathy, a great-granddaughter of Iyengar. Except for a period of about two years, when S. Varadarajan held the editorship of the newspaper, the editorial positions of the paper were always held by members of the family or held under their direction. Histo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turbofan
The turbofan or fanjet is a type of airbreathing jet engine that is widely used in aircraft engine, aircraft propulsion. The word "turbofan" is a portmanteau of "turbine" and "fan": the ''turbo'' portion refers to a gas turbine engine which achieves mechanical energy from combustion, and the ''fan'', a ducted fan that uses the mechanical energy from the gas turbine to force air rearwards. Thus, whereas all the air taken in by a turbojet passes through the combustion chamber and turbines, in a turbofan some of that air bypasses these components. A turbofan thus can be thought of as a turbojet being used to drive a ducted fan, with both of these contributing to the thrust. The ratio of the mass-flow of air bypassing the engine core to the mass-flow of air passing through the core is referred to as the bypass ratio. The engine produces thrust through a combination of these two portions working together; engines that use more Propelling nozzle, jet thrust relative to fan thrust are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Afterburner
An afterburner (or reheat in British English) is an additional combustion component used on some jet engines, mostly those on military supersonic aircraft. Its purpose is to increase thrust, usually for supersonic flight, takeoff, and combat. The afterburning process injects additional fuel into a combustor in the jet pipe behind (''i.e.'', "after") the turbine, "reheating" the exhaust gas. Afterburning significantly increases thrust as an alternative to using a bigger engine with its attendant weight penalty, but at the cost of increased fuel consumption (decreased fuel efficiency) which limits its use to short periods. This aircraft application of "reheat" contrasts with the meaning and implementation of "reheat" applicable to gas turbines driving electrical generators and which reduces fuel consumption. Jet engines are referred to as operating ''wet'' when afterburning and ''dry'' when not. An engine producing maximum thrust wet is at ''maximum power,'' while an engine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pulse-doppler Radar
A pulse-Doppler radar is a radar system that determines the range to a target using pulse-timing techniques, and uses the Doppler effect of the returned signal to determine the target object's velocity. It combines the features of pulse radars and continuous-wave radars, which were formerly separate due to the complexity of the electronics. The first operational Pulse Doppler radar was in the CIM-10 Bomarc, an American long range supersonic missile powered by ramjet engines, and which was armed with a W40 nuclear weapon to destroy entire formations of attacking enemy aircraft. Pulse-Doppler systems were first widely used on fighter aircraft starting in the 1960s. Earlier radars had used pulse-timing in order to determine range and the angle of the antenna (or similar means) to determine the bearing. However, this only worked when the radar antenna was not pointed down; in that case the reflection off the ground overwhelmed any returns from other objects. As the ground moves at the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
