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Category: space travel – Page 371

Tiny Electric Thrusters from Phase Four, Accion Could Go Interplanetary

Circa 2019

Electric thrusters for spacecraft are increasingly shrinking, and could prove key for new space missions. And, according to two novel space tech companies, Phase Four and Accion Systems, they might even go interplanetary.

Conventional rockets that rely on chemical reactions “are a great way to generate a lot of thrust, but they are very inefficient when it comes to generating thrust given the amount of propellant they carry,” Simon Halpern, founder and CEO of space propulsion company Phase Four in El Segundo, California, told Space.com. “That’s why launching even a small satellite requires a gigantic multistory rocket.”

Scientists have explored a variety of alternatives to chemical rockets over the years. One is electric propulsion, which generates thrust by using electricity to accelerate electrically charged propellants away from a spacecraft. [Wild Ideas for Superfast Space Propulsion].

‘National pride is at stake.’ Russia, China, United States race to build hypersonic weapons

Now, DOD is leading a new charge, pouring more than $1 billion annually into hypersonic research. Competition from ambitious programs in China and Russia is a key motivator. Although hype and secrecy muddy the picture, all three nations appear to have made substantial progress in overcoming key obstacles, such as protecting hypersonic craft from savage frictional heating. Russia recently unveiled a weapon called the Kinzhal, said to reach Mach 10 under its own power, and another that is boosted by a rocket to an astonishing Mach 27. China showed off a rocket-boosted hypersonic glide vehicle (HGV) of its own, the Dongfeng-17, in a recent military parade. The United States, meanwhile, is testing several hypersonic weapons. “It’s a race to the Moon sort of thing,” says Iain Boyd, an aerospace engineer at the University of Colorado, Boulder. “National pride is at stake.”

Despite hype and technological hurdles, a hypersonic arms race is accelerating.

SpaceX’s Upcoming Crewed NASA Mission Will Feature a Tesla Car: Video

Elon Musk’s rocket company SpaceX is kicking off the new year with an ultra busy month of tests and missions, including a major test for the company’s first crewed mission to fly NASA astronauts to and back from the International Space Station (ISS).

To drum up hype ahead of the big day, Musk posted a simulated video on Monday showing how the eventual manned launch will look.

SEE ALSO: Why Nobel Prize-Winning Scientists Universally Oppose Moving to Mars.

Elon Musk Shares Awe-Inspiring Animation of What SpaceX Is About to Achieve Next

Elon Musk founded SpaceX in 2002 with the goal of populating outer space. But in the nearly 18 years since – and even as the rocket company continues to disrupt the global launch industry – the most complex life-form SpaceX has flown is a mouse.

That should all change in early 2020, though, as SpaceX prepares to launch its first crewed mission aboard its new capsule-like spaceship, called Crew Dragon.

The NASA astronauts and spaceflight veterans Bob Behnken and Doug Hurley are set to board the Crew Dragon, rocket into orbit 250 miles above Earth, and dock with the football-field-size International Space Station.

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