http://sci-techuniverse.blogspot.com.au/2015/11/nasa-conducts-more-secret-tests-of-its.html
The ‘impossible’ fuel-free engine, which could take a humans to Mars in just 10 weeks, is still challenging science. When the idea was initially suggested, it was considered improbable as it went in contradiction with the laws of physics. But subsequent tests of the EM Drive have shown that the idea could revolutionize space travel. Now NASA has provided the first public update on the test in months, and it appears to propose that it does, in fact, work.
Researchers, though, still do not know why.
The update was given by Paul March, one of the top engineers employed on the EM Drive thruster at the Eagleworks Laboratory at the Johnson Space Center in Texas. He said NASA has achieved to remove some of the mistakes from former tests – but still discovered signals of mysterious thrust. March’s announcement is the first direct announcement in months, with the space agency mostly remaining silent about any developments on the notorious project.
March posted on the NASA Spaceflight forum in reply to an unpublished paper that claims the unaccounted thrust is produced by something known as the Lorentz force. The Lorentz force is the force that is applied by a magnetic field on a moving electric charge.
But March says his tests prove this is not true.
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