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Satish Dhawan
Satish Dhawan (25 September 1920 – 3 January 2002) was an Indian mathematician and aerospace engineer, widely regarded as the father of experimental fluid dynamics research in India. Born in Srinagar, Dhawan was educated in India and further on in United States. Dhawan was one of the most eminent researchers in the field of turbulence and boundary layers, leading the successful and indigenous development of the Indian space programme. He succeeded M. G. K. Menon, as the third chairman of the Indian Space Research Organisation (ISRO) in 1972. Education Dhawan was a graduate of the University of the Punjab in Lahore, British India (now in Pakistan), where he completed a Bachelor of Science in physics and mathematics, a bachelor's degree in Mechanical Engineering and a Master of Arts in English literature. In 1947, he completed a Master of Science degree in aerospace engineering from the University of Minnesota, Minneapolis, and an aeronautical engineering de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Srinagar
Srinagar (English: , ) is the largest city and the summer capital of Jammu and Kashmir, India. It lies in the Kashmir Valley on the banks of the Jhelum River, a tributary of the Indus, and Dal and Anchar lakes. The city is known for its natural environment, gardens, waterfronts and houseboats. It is known for traditional Kashmiri handicrafts like the Kashmir shawl (made of pashmina and cashmere wool), and also dried fruits. It is the 31st-most populous city in India, the northernmost city in India to have over one million people, and the second-largest metropolitan area in the Himalayas (after Kathmandu, Nepal). Origin of name The earliest records, such as Kalhana's '' Rajatarangini'', mentions the Sanskrit name ''shri-nagara'' which have been interpreted distinctively by scholars in two ways: one being ''sūrya-nagar'', meaning "''City of the Surya''" (trans) ''"City of Sun''" and other being ''"The city of "Shri''" (श्री), the Hindu goddess of wealth, m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Padma Bhushan
The Padma Bhushan is the third-highest civilian award in the Republic of India, preceded by the Bharat Ratna and the Padma Vibhushan and followed by the Padma Shri. Instituted on 2 January 1954, the award is given for "distinguished service of a high order...without distinction of race, occupation, position or sex." The award criteria include "service in any field including service rendered by Government servants" including doctors and scientists, but exclude those working with the public sector undertakings. , the award has been bestowed on 1270 individuals, including twenty-four posthumous and ninety-seven non-citizen recipients. The Padma Awards Committee is constituted every year by the Prime Minister of India and the recommendations for the award are submitted between 1 May and 15 September. The recommendations are received from all the state and the union territory governments, as well as from Ministries of the Government of India, Bharat Ratna and Padma Vibhushan aw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pakistan
Pakistan ( ur, ), officially the Islamic Republic of Pakistan ( ur, , label=none), is a country in South Asia. It is the world's List of countries and dependencies by population, fifth-most populous country, with a population of almost 243 million people, and has the world's Islam by country#Countries, second-largest Muslim population just behind Indonesia. Pakistan is the List of countries and dependencies by area, 33rd-largest country in the world by area and 2nd largest in South Asia, spanning . It has a coastline along the Arabian Sea and Gulf of Oman in the south, and is bordered by India to India–Pakistan border, the east, Afghanistan to Durand Line, the west, Iran to Iran–Pakistan border, the southwest, and China to China–Pakistan border, the northeast. It is separated narrowly from Tajikistan by Afghanistan's Wakhan Corridor in the north, and also shares a maritime border with Oman. Islamabad is the nation's capital, while Karachi is its largest city and fina ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lahore
Lahore ( ; pnb, ; ur, ) is the second List of cities in Pakistan by population, most populous city in Pakistan after Karachi and 26th List of largest cities, most populous city in the world, with a population of over 13 million. It is the capital of the Provinces of Pakistan, province of Punjab, Pakistan, Punjab where it is the largest city. Lahore is one of Pakistan's major industrial and economic hubs, with an estimated GDP (Purchasing power parity, PPP) of $84 billion as of 2019. It is the largest city as well as the historic capital and cultural centre of the wider Punjab region,Lahore Cantonment globalsecurity.org and is one of Pakistan's most Social liberalism, socially liberal, Progressivism, progressive, and Cosmopolitanism, cosmopolitan cities. It is si ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of The Punjab
The University of the Punjab (Urdu, pnb, ), also referred to as Punjab University, is a public, research, coeducational higher education institution located in Lahore, Pakistan. Punjab University is the oldest public university in Pakistan. With multiple campuses in Gujranwala, Jhelum, and Khanspur, the university was formally established by the British Government after convening the first meeting for establishing higher education institutions in October 1882 at Simla. Punjab University was the fourth university to be established by the British colonial authorities in the subcontinent; the first three universities were established in other parts of British-ruled Subcontinent. There are 45,678 students (27,907 morning students, 16,552 evening students and 1,219 diploma students). The university has 13 faculties of which there are 83 academic departments, research centres, and institutes. Punjab University has ranked first among large-sized multiple faculty universities by th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boundary Layers
In physics and fluid mechanics, a boundary layer is the thin layer of fluid in the immediate vicinity of a bounding surface formed by the fluid flowing along the surface. The fluid's interaction with the wall induces a no-slip boundary condition (zero velocity at the wall). The flow velocity then monotonically increases above the surface until it returns to the bulk flow velocity. The thin layer consisting of fluid whose velocity has not yet returned to the bulk flow velocity is called the velocity boundary layer. The air next to a human is heated resulting in gravity-induced convective airflow, airflow which results in both a velocity and thermal boundary layer. A breeze disrupts the boundary layer, and hair and clothing protect it, making the human feel cooler or warmer. On an aircraft wing, the velocity boundary layer is the part of the flow close to the wing, where viscous forces distort the surrounding non-viscous flow. In the Earth's atmosphere, the atmospheric bound ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turbulence
In fluid dynamics, turbulence or turbulent flow is fluid motion characterized by chaotic changes in pressure and flow velocity. It is in contrast to a laminar flow, which occurs when a fluid flows in parallel layers, with no disruption between those layers. Turbulence is commonly observed in everyday phenomena such as surf, fast flowing rivers, billowing storm clouds, or smoke from a chimney, and most fluid flows occurring in nature or created in engineering applications are turbulent. Turbulence is caused by excessive kinetic energy in parts of a fluid flow, which overcomes the damping effect of the fluid's viscosity. For this reason turbulence is commonly realized in low viscosity fluids. In general terms, in turbulent flow, unsteady vortices appear of many sizes which interact with each other, consequently drag due to friction effects increases. This increases the energy needed to pump fluid through a pipe. The onset of turbulence can be predicted by the dimensionless Rey ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country Continental United States, primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., federal district, five major unincorporated territories, nine United States Minor Outlying Islands, Minor Outlying Islands, and 326 Indian reservations. The United States is also in Compact of Free Association, free association with three Oceania, Pacific Island Sovereign state, sovereign states: the Federated States of Micronesia, the Marshall Islands, and the Palau, Republic of Palau. It is the world's List of countries and dependencies by area, third-largest country by both land and total area. It shares land borders Canada–United States border, with Canada to its north and Mexico–United States border, with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations. With a population of over 333 m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fluid Dynamics
In physics and engineering, fluid dynamics is a subdiscipline of fluid mechanics that describes the flow of fluids— liquids and gases. It has several subdisciplines, including ''aerodynamics'' (the study of air and other gases in motion) and hydrodynamics (the study of liquids in motion). Fluid dynamics has a wide range of applications, including calculating forces and moments on aircraft, determining the mass flow rate of petroleum through pipelines, predicting weather patterns, understanding nebulae in interstellar space and modelling fission weapon detonation. Fluid dynamics offers a systematic structure—which underlies these practical disciplines—that embraces empirical and semi-empirical laws derived from flow measurement and used to solve practical problems. The solution to a fluid dynamics problem typically involves the calculation of various properties of the fluid, such as flow velocity, pressure, density, and temperature, as functions of space and ti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aerospace Engineer
Aerospace engineering is the primary field of engineering concerned with the development of aircraft and spacecraft. It has two major and overlapping branches: aeronautical engineering and astronautical engineering. Avionics engineering is similar, but deals with the electronics side of aerospace engineering. "Aeronautical engineering" was the original term for the field. As flight technology advanced to include vehicles operating in outer space, the broader term "aerospace engineering" has come into use. Aerospace engineering, particularly the astronautics branch, is often colloquially referred to as "rocket science". Overview Flight vehicles are subjected to demanding conditions such as those caused by changes in atmospheric pressure and temperature, with structural loads applied upon vehicle components. Consequently, they are usually the products of various technological and engineering disciplines including aerodynamics, Air propulsion, avionics, materials science, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mathematician
A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems. Mathematicians are concerned with numbers, data, quantity, structure, space, models, and change. History One of the earliest known mathematicians were Thales of Miletus (c. 624–c.546 BC); he has been hailed as the first true mathematician and the first known individual to whom a mathematical discovery has been attributed. He is credited with the first use of deductive reasoning applied to geometry, by deriving four corollaries to Thales' Theorem. The number of known mathematicians grew when Pythagoras of Samos (c. 582–c. 507 BC) established the Pythagorean School, whose doctrine it was that mathematics ruled the universe and whose motto was "All is number". It was the Pythagoreans who coined the term "mathematics", and with whom the study of mathematics for its own sake begins. The first woman mathematician recorded by history was Hyp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Udupi Ramachandra Rao
Udupi Ramachandra Rao (10 March 1932 – 24 July 2017) was an Indian space scientist and former chairman of the Indian Space Research Organisation. He was also the Chairman of the Governing Council of the Physical Research Laboratory at Ahmedabad and Nehru Planetarium at Bengaluru and chancellor of the Indian Institute for Space Science and Technology (IIST) at Thiruvananthapuram. He is known as "''The Satellite Man of India''". He pioneered India's first satellite launch Aryabhata in 1975. Rao was awarded the Padma Bhushan by the Government of India in 1976, and Padma Vibhushan in 2017. He was inducted into the Satellite Hall of Fame, Washington, on 19 March 2013 at a ceremony organised by the Society of Satellite Professionals International. With this he became the first Indian to be inducted. He was also to be inducted in International Astronautics Federation (IAF) on 15 May 2016. He was again the first Indian to achieve such a feat. Early life U. R. Rao was born into ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
