New Paper Claims That the EM Drive
Doesn't Defy Newton's 3rd Law After All (Source: Science Alert)
Physicists have just published a new paper that suggests the
controversial EM drive - or electromagnetic drive - could actually
work, and doesn't defy Newton's third law after all. In case you've
missed the hype, here's a quick catch-up: a lot of space lovers are
freaking out about the EM drive because of claims it could get humans
to Mars in just 10 weeks, but just as many are sick of hearing about
it, because, on paper at least, it doesn't work within the laws of
physics.
Despite that not-insignificant setback, the EM drive shows no signs of
quitting, and test after test - including trials by NASA scientists at
the Eagleworks lab, and an independent researcher in Germany - has
conceded that the propulsion system, somehow, does produce thrust. The
EM drive uses electromagnetic waves as fuel, and creates thrust by
bouncing those microwaves back and forth within a metal cavity to
trigger motion. But the EM drive doesn't use any fuel propellants, and
so it doesn't have an exhaust, and so... it can't produce thrust.
According to the researchers, the exhaust being blasted out is actually
light, or more specifically, photons that have become paired up with
another out-of-phase photon in order to shoot out of the metal cavity
and produce thrust. The researchers predict that's because photons need
to become paired up in order to escape the fuel cavity, so that the two
photons in those pairs are out of phase, which means they completely
cancel each other out and have no net electromagnetic field. (6/16)
New Facility at Former Launch Pad
Secures Navy Testing at Spaceport for Decades to Come (Source:
Space Florida)
Today, the U.S. Navy, the UK’s Ministry of Defense, Space Florida and
the Economic Development Commission of Florida’s Space Coast celebrated
the completion of the Strategic Weapons System Ashore (SWS Ashore)
facility at the Cape Canaveral Air Force Station’s Launch Complex 25.
CCAFS Launch Complex 25 was originally constructed for the first Fleet
Ballistic Missile test launches in the 1950s, and use of the location
was discontinued in the 1970s.
SWS Ashore is a joint effort with the Navy and the State of Florida
investing in the redevelopment of the site. Space Florida invested $5
million for capital improvements at Launch Complex 25. “In 2012,
we celebrated a groundbreaking for this project," said Space Florida's
Frank DiBello. "[We] have transformed this launch site into a base for
the Strategic Weapons Systems Ashore support facility."
The project enables integrated systems testing of strategic military
systems at the spaceport, securing the high-value activity's place in
Central Florida "for decades into the future." (6/16)
ESA Enlists NASA Chief in Campaign for
Space Station Support (Source: Space News)
NASA Administrator Charles Bolden on June 15 made an impassioned plea
to European governments not to quit the International Space Station
partnership, saying the low-orbiting outpost is the on-ramp for
longer-term collaboration in space exploration.
ESA’s governments are scheduled to meet in December to decide on a
mid-term budget and specifically to discuss whether to remain a space
station partner to 2020 – still not formally agreed to – and ultimately
to 2024. These same governments in December 2014 refused to fully
commit even to the 2020 date. (6/16)
Rocket Fight Winners & Losers
(Source: Politico)
SpaceX's big guns and loaded rhetoric about boosting Putin cronies
weren't enough to overcome Boeing and Lockheed-Martin's muscle, in a
remarkable turnaround from last year's NDAA and a stunning defeat for
Senate Armed Services Chairman John McCain. The amendment from Sen.
Bill Nelson (D-FL) and Cory Gardner (R-CO) lets the companies' joint
United Launch Alliance buy up to 18 Russian-made rockets, which is what
they and the Pentagon wanted.
McCain spun the amendment as a "compromise" since it imposed a cut-off
in 2022, but the ULA never objected to that because they expect a
made-in-America alternative by then. The fact is, the amendment passed
by voice vote because SpaceX's side knew it didn't have the votes,
sources familiar with the proceedings tell PI. (Last year's NDAA
blocked the Russian rockets, but a sneaky rider in the omnibus put them
back in play.) (6/15)
Russian Producer Makes Changes to
RD-180 Engines to Avoid Future Anomalies (Source: Sputnik)
The producer of Russia’s RD-180 rocket engines has made the required
changes to avoid engine anomalies in the future. An investigation found
March 22 premature shutdown was caused by unexpected shift in fuel
pressure differential across the RD-180 Mixture Ratio Control Valve
(MRCV) and a reduction in fuel flow to the combustion chamber caused an
oxidizer-rich mixture of propellants and a reduction in first stage
performance. (6/15)
NASA to Launch Rocket with Student
Experiments at Virginia Spaceport Next Week (Source:
Virginian-Pilot)
Nearly 200 college students from across the country will be at the
Wallops Flight Facility next week building experiments and launching
them on a suborbital rocket. Rocket Week actually begins Saturday and
continues through next week for the students, a NASA news release says.
About 20 educators will learn how to use rocketry basics in their
curriculum. (6/15)
Lifetime Medical Care for NASA
Astronauts? (Source: Space Policy Online)
Three current and former astronauts, NASA's Chief Medical Officer and a
medical ethicist told a congressional committee today that the U.S.
Government has an ethical obligation to provide lifetime medical care
to people who fly into space as part of a NASA program. In addition,
the data NASA could obtain by following individuals after they leave
the astronaut corps would be invaluable in determining how to protect
the health of current and future astronauts. (6/15)
Task Force to Explore Independent
Space Authority (Source: Orlando Sentinel)
Space Florida's president said the industry should move toward a
marketplace driven by commercial space companies and away from one
driven by government agencies like NASA. To do so, Frank DiBello said
he would create a task force to explore the best way of doing that.
DiBello said an independent space authority could be part of those
plans but warned that could come with some financial pains.
“We are moving from a past where the federal government paid for much
to a more purely market-driven landscape,” DiBello said. “This will
mean changes for (the) commercial industry , as well as government.
Some things that launch providers pay little for now, they may pay more
for in the future.”
The actual structure of the task force has not been determined, DiBello
said. “Whether that authority is a state of quasi-federal authority
does not matter,” DiBello said. “But the authority would manage most of
the spaceport territory except for limited land and facilities retained
by NASA and the Air Force to service unique or special-consideration
national security or extraordinary space exploration missions.” (6/16)
Leading Astronomer Urges Europe to End
Human Space Missions (Source: CNN)
Britain's leading astronomer has called on Europe to end human
spaceflights because he says they are no longer cost effective or a
benefit to science. Astronomer Martin Rees told CNN that the European
Space Agency (ESA) should focus on robotic exploration instead. "The
practical case for sending people into space is getting weaker as
robots are getting better," Rees said. (6/16)
Small Asteroid Discovered Orbiting
Earth (Source: CNN)
A small asteroid has been found circling Earth as the two objects orbit
the sun together. Scientists say it looks like the asteroid -- called
2016 HO3 -- has been out there for about 50 years and isn't going away
anytime soon. Scientists think the asteroid is between 120 and 300 feet
(37 to 91 meters) in diameter.
"Our calculations indicate 2016 HO3 has been a stable quasi-satellite
of Earth for almost a century, and it will continue to follow this
pattern as Earth's companion for centuries to come," said Paul Chodas,
manager of NASA's Center for Near-Earth Object Studies. (6/16)
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