An independent UK inventor has successfully created an anti-gravity device that could one day power human spacecraft. Dubbed the 'EmDrive' it is an electromagnetic propulsion engine that uses microwave technology to convert electrical energy into thrust. It uses no propellant. Roger Shawyer's experimental Emdrive could ultimately prove to be a breakthrough in propulsion technology. For starters, it makes possible vertical takeoffs with slow ascents and using very little acceleration. In a military context this is a huge benefit because currently ballistic missiles launched from anywhere on Earth can be immediately spotted from orbiting satellites. An undetected, silent delivery of a deadly nuclear payload is an obvious military advantage. Other applications would undoubtedly be revolutionary for civilian transport. The flying cars that aeronautical engineers have been dreaming of could be soon realized. According to Shawyer, "the technology is firmly anchored in the basic laws of physics."
The key to the anti-gravity functionality of the EmDrive involves a resonate cavity filled with microwaves. His theory of microwave propulsion, which was first widely publicized in a New Scientist article back in 2006, was not surprisingly met with large scale criticism. "Outrageous" and "impossible" were the common themes of EmDrive proponents. Now Chinese researchers claimed they have validated the math, and are building an EmDrive of their own.The Northwestern Polytechnical University (NPU) in Xi'an is currently manufacturing a thruster based on the Shawyer's microwave propulsion theory. NPU started their research program in June 2007, under the supervision of Professor Yang Juan. They have independently developed a mathematical simulation which shows unequivocally that a net force can be produced from a simple resonant tapered cavity. The thrust levels predicted by this simulation are similar to those resulting from the SPR design software, and the SPR test results.The NPU has confirmed that they have reproduced Shawyer's theory and are building a prototype. The big question is this: will Shawyer be allowed to continue the development of his technology. There is indeed a cartel of oil & energy corporations that are not about to let their multi trillion dollar energy business model, a model which based on the production of fossil fuels and non-renewable energy, be interrupted by a breakthrough idea. And this cartel is notorious for stifling, intimidating, and destroying the lives of inventors who would otherwise be able to share their technology with the world.