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Part 1 Science and tech: Space technology (in Hindi)
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Science and tech : Space technology (part 1)

Upendra Kumar Singh
UPENDRA KUMAR SINGH MASTER IN COMPUTER APPLICATION APPEARED TWO TIMES IN UPSC CSE MAINS

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  1. SPACE TECHNOLOGY INDIAN SPACE RESEARCH ORGANISATION (ISRO) ISRO was formed in 1969 It superseded the erstwhile Indian National Committee for Space Research (INCOSPAR) established in 1962 by the efforts of independent India's first Prime Minister, Jawaharlal Nehru and his close aide and scientist Vikram Sarabhai. It is managed by the Department of Space, which reports to the Prime Minister of India. SATELLITE ORBITS An orbit is the path that a satellite follows as it revolves around Earth. The orbit of spacecraft can be in the shape of a circle or an ellipse.


  2. SATELLITE ORBITS An orbit is the path that a satellite follows as it revolves around Earth. The orbit of spacecraft can be in the shape of a circle or an ellipse TYPES OF SATELLITE ORBITS (a) Geostationary(GSO) and Geosynchronous GEO) Earth Orbit: A geostationary satellite is an earth orbiting satellite, placed at an altitude of approximately 35,800 kilometers (22,300 miles) directly over the equator.


  3. that revolves in the same direction the earth rotates (west to east). At this altitude one orbit takes 24 hours. -?"-"" the same length of time as the earth requires to rotate once on it's a geosynchronous orbit is a geocentric orbit that has the same orbital period as the sidereal rotation period of the Earth.


  4. (b) Low Earth Orbit: With Low Earth Orbit extending from 200 km to 1200 km it means that it is relatively low in altitude, although well above anything that a conventional aircraft can reach. (c) Medium Earth Orbit: Medium Earth Orbit (MEO) refers to a satellite which orbits the earth at an altitude below 22,300 miles (geostationary orbit) and above the altitude of Low Earth Orbit (LEO) satellites. (d) Sun-Synchronous Orbit: A Sun-Synchronous Orbit (SSO, also called a heliosynchronous orbit) is a nearly polar orbit around Earth (also called geocentric orbit) in which the satellite passes over any given point of the planet's surface at the same local mean solar time.


  5. (E) Polar Orbit: A Polar Orbit is one in which a satellite passes above or nearly above both poles of the body being orbited (usually a planet such as the Earth, but possibly another body such as the Moon or Sun) on each revolution INDIAN SATELLITES (a) INSAT (Indian National satellite system) series for communication, television broadcasting and meteorological services (INSAT satellite are geo stationary satellite) b) IRS (Indian remote satellite) for resources monitoring and management.