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Category: military – Page 36

Viasat completes first broadband upgrade on military sealift fleet

WASHINGTON — Viasat announced it completed the first satellite broadband upgrade on board a Military Sealift Command ship, and expects to update 105 vessels over the next year. The work is part of a $578 million contract that Inmarsat won in 2022 before it was acquired by rival satellite operator Viasat.

The U.S. Navy’s sealift organization, responsible for providing ocean transportation to the Department of Defense, operates a fleet of approximately 125 civilian-crewed ships that replenish Navy vessels at sea, transporting military equipment and personnel, and strategically positioning cargo around the world.

Viasat is revamping the ships’ satellite network from Ku-band to the company’s Global Xpress Ka-band and the ELERA L-band systems.

Russia Will Launch Nuke Into Orbit, US Panics | Breaking News With The Enforcer

Russia is planning on launching a nuclear weapon into orbit, where it will threaten US national security by either being used to strike the US within a matter of moments or be used to knock out US satellite grids in a single explosion. The US is convening national security meetings to find a way to stop this launch from happening.

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Nuclear-powered spacecraft: why dreams of atomic rockets are back on

Launching rockets into space with atomic bombs is a crazy idea that was thankfully discarded many decades ago. But as Richard Corfield discovers, the potential of using the energy from nuclear-powered engines to drive space travel is back on NASA’s agenda.

In 1914 H G Wells published The World Set Free, a novel based on the notion that radium might one day power spaceships. Wells, who was familiar with the work of physicists such as Ernest Rutherford, knew that radium could produce heat and envisaged it being used to turn a turbine. The book might have been a work of fiction, but The World Set Free correctly foresaw the potential of what one might call “atomic spaceships”

The idea of using nuclear energy for space travel took hold in the 1950s when the public – having witnessed the horrors of Hiroshima and Nagasaki – gradually became convinced of the utility of nuclear power for peaceful purposes. Thanks to programmes such as America’s Atoms for Peace, people began to see that nuclear power could be used for energy and transport. But perhaps the most radical application lay in spaceflight.

A type of plastic that can be shape-shifted using tempering

A team of molecular engineers have developed a type of plastic that can be shape-shifted using tempering. In their paper published in the journal Science the team, from the University of Chicago, with a colleagues from the US DEVCOM Army Research Laboratory, Aberdeen Proving Ground, the National Institutes of Standards and Technology and the NASA Glenn Research Center, describe how they made their plastic and how well it was able to shape shift when they applied various types of tempering.

Haley McAllister and Julia Kalow, with Northwestern University, have published a Perspective piece in the same issue of Science outlining the work.

Over the past several years, it has become evident that the use of plastics in products is harmful to not only the environment but also —bits of plastic have been found in the soil, the atmosphere, the oceans, and the human body.

DragonFire laser weapon achieves UK’s first high-power firing

The DragonFire laser-directed energy weapon (LDEW) system has achieved the UK’s first high-power firing of a laser weapon against aerial targets during a trial at the MOD’s Hebrides Range.

The DragonFire is a line-of-sight weapon and can engage with any visible target, and its range is classified. The system is able to deliver a high-power laser over long ranges and requires precision equivalent to hitting a £1 coin from a kilometer away.

Laser-directed energy weapons are incredibly powerful and can engage targets at lightning-fast speeds. They use a concentrated beam of light to cut through their target, resulting in structural failure or other devastating outcomes if the warhead is targeted.