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Top News In தொழில்நுட்பம் ஆர்ப்பாட்டம் பயணங்கள் Today - Breaking & Trending Today

China Breaks Ground for 1st Small Modular Reactor


A project to build a first-of-its-kind nuclear reactor in eastern Idaho has been significantly downsized cutting in half the number of small modular reactors (SMR) from 12 to 6, but boosting the amount of power produced by the installation of six SMRs from 300 MWe to 462 MWe.
The change in the power output results from a change to the design of the NuScale SMR from 50 MWe to 77 MWe. NuScale submitted the 50 MWe design to the NRC for licensing and the revised power rating will likely be a follow on action.
Downsizing the project in terms of the number of SMRs built for the first of a kind installation reduces the project’s overall costs (12 units to 6) and the amount of power it can produce (600 MWe to 472 MWe). The Post Register reported that the energy cost that project partners will pay rose from $55 per megawatt-hour to $58 per megawatt-hour. ....

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Deep Space Atomic Clock Moves Toward Increased Spacecraft Autonomy


NASA’s Deep Space Atomic Clock is working toward giving far-flung space explorers more autonomy when navigating. In a new paper published in the journal
Nature, the mission reports progress in their work to improve the ability of space-based atomic clocks to measure time consistently over long periods.
Known as stability, this feature also impacts the operation of GPS satellites that help people navigate on Earth, so this work also has the potential to increase the autonomy of next-generation GPS spacecraft. Spacecraft that venture beyond our Moon rely on communication with ground stations on Earth to figure out where they are and where they’re going. ....

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Tricky Terrain: Helping to Assure a Safe Rover Landing – NASA's Mars Exploration Program


Tricky Terrain: Helping to Assure a Safe Rover Landing
Entry, Descent, and Landing System: Mars 2020’s Perseverance rover is equipped with a lander vision system based on terrain-relative navigation, an advanced method of autonomously comparing real-time images to preloaded maps that determine the rover’s position relative to hazards in the landing area. Divert guidance algorithms and software can then direct the rover around those obstacles if needed. Credit: NASA/JPL-Caltech. Full image and caption ›
How two new technologies will help Perseverance, NASA’s most sophisticated rover yet, touch down onto the surface of Mars this month.
After a nearly seven-month journey to Mars, NASA’s Perseverance rover is slated to land at the Red Planet’s Jezero Crater Feb. 18, 2021, a rugged expanse chosen for its scientific research and sample collection possibilities. ....

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