RBT's Defense Blog

NISAR  is acronym for  N asa  I sro  S ynthetic  A perture  R adar. NISAR is a billion-dollar satellite designed primarily to reveal Earth's heartbeat. On 30th July 2025, a day when Donald Trump, President of USA imposed 25% tariff on India to be effective from, 1 August 2025; India’s space agency ISRO joined hands with NASA, the space agency of USA to launch NISAR satellite. NISAR more specifically is designed to reveal a detailed view of the Earth allowing scientists to observe and measure some of the planet's most complex processes, including ecosystem disturbances, ice-sheet collapse, natural hazards, sea level rise, and groundwater issues. It will also help in ship detection, shoreline monitoring, storm characterisation, changes in soil moisture, mapping and monitoring of surface water resources. The satellite houses a huge Synthetic Aperture Radar, the first-of-its-kind installed in space, that will systematically map Earth, measuring all changes of p...

 2-spool, high-bypass turbofan A. Low-pressure spool B.   High-pressure spool C.   Stationary components 1.   Nacelle 2.   Fan 3.   Low-pressure compressor 4.   High-pressure compressor 5.   Combustion chamber 6.   High-pressure turbine 7.   Low-pressure turbine 8.   Core nozzle 9.   Fan nozzle A turbofan or fanjet is a type of airbreathing jet engine that is widely used in aircraft propulsion. The word "turbofan" is a combination of references to the preceding generation engine technology of the turbojet and the additional fan stage. It consists of a gas turbine engine which achieves mechanical energy from combustion, and 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 bypasse...