Posts

Showing posts from 2025

Ramjet Engine – How It Works & Its Evolution

Image
Simple ramjet operation, with Mach numbers of flow A ramjet is a type of airbreathing jet engine that requires forward motion of engine to provide air for combustion. Ramjets work most efficiently at supersonic speeds around Mach 3 or (2,300 mph; 3,700 km/h) and can operate up to Mach 6 (4,600 mph; 7,400 km/h). Ramjets can be particularly useful in missiles where  they require a compact mechanism with high-speed.  Weapons designers are investigating ramjet technology for use in artillery shells to increase range; a 120 mm ramjet-assisted mortar shell is thought to be able to travel 35 km (22 mi). They have been used, though not efficiently, as tip-jets on the ends of helicopter rotors. History France Leduc 010 Cyrano de Bergerac L'Autre Monde: ou les États et Empires de la Lune (Comical History of the States and Empires of the Moon)  (1657) w...

Joke of the Day played out by Chinese PLA Navy & Coast Guard Crashes Type 052D Destroyer

Image
  #jokeoftheday played out by #Chinese #PLANavy and #Chinese #CoastGuard 😂😂😂, #PLANavy crashes its own 052D type #destroyer damaging it beyond repair while trying to chase out #Phillipines Coast Guard ship from #Phillipines #EEZ in #SouthChinaSea 🤣🤣🤣 massively embarrassing itself https://www.youtube.com/watch?v=Dgho-ApAGFA

NASA and ISRO Join Hands to Launch NISAR Satellite (updated)

Image
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...