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ADA/HAL   LCA Tejas - Lethal-Compact-Agile

4/30/2017

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Introduction

Tejas is a 4+ generation, supersonic, highly maneuverable, multi-role, smallest and lightest in its class contemporary combat aircraft designed for the Indian Air Force designed and developed by DRDO. It is considered ‘game changer’ for India’s air defense preparedness.

The LCA has been designed and developed by a consortium of five aircraft research, design, production and product support organizations pooled by the Bangalore-based Aeronautical Development Agency (ADA), under Department of Defense Research and Development Organization (DRDO). Hindustan Aeronautics Limited (HAL) is the Principal Partner in the design and fabrication of the LCA and its integration leading to flight testing. Several academic institutions from over the country have participated in the development of design and manufacturing software for LCA. National teams formed by pooling the talents and expertise in the country are entrusted with the responsibility of the development of major tasks such as development of carbon composite wing, design, design of control law and flight testing. Several private and public sector organizations have also supported design and manufacture of various LCA sub-systems.
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The LCA design was finalized in 1990 as a small tail-less delta winged machine with relaxed static stability (RSS) to enhance maneuverability performance and a host of other advanced features. A review committee was formed in May 1989 which reported that Indian infrastructure, facilities and technology had advanced sufficiently in most areas to undertake the project. It was decided that the full-scale engineering development (FSED) stage of the programme would proceed in two stages.
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A Brief Description of Propulsion - Air-breathing engines

4/10/2017

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An air-breathing engine is an engine that takes in air from its surroundings in order to burn fuel. All practical air breathing engines are internal combustion engines that directly heat the air by burning fuel, with the resultant hot gases used for propulsion via a propulsive nozzle.  A continuous stream of air flows through the air-breathing engine. The air is compressed, mixed with fuel, ignited and expelled as the exhaust gas. Thrust produced by a typical air-breathing engine is about eight times greater than its weight.
The thrust results from the expulsion of the working gases from the exhaust nozzle. To expel the gases from the nozzle at high velocity, the air entering the combustion chamber of the engine is compressed. 
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Radar Equation and detection of stealth Fighters

4/3/2017

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There are so many arguments and debates related to the detection of stealth fighters are happening around. Here we are presenting a simple method to find the detection range of radars against stealth fighters.
Below you can see the radar equation, various parameters that affect the range of radar and how these variables individually affect the detection range. 
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R max = 4th root of ((Pt * G2*lamda 2 * RCS) / ((4 Pie) 3 * P Min))
The variables in the above equation are constant and radar dependent except target RCS.

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    Palash Choudhari
    Varun Karthikeyan
    ​Anoop Madhavan

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