A handful of leftfield scientists have been trying to harness the power of gravity. Welcome to the world of Project Greenglow, writes Nic Young.
In science there exists a uniquely potent partnership between theory and engineering. It’s what’s given us atomic energy, the Large Hadron Collider and space-flight, to name a few of the more headline acts.
The theorists say: “This is theoretically possible.” The engineers then figure out how to make it work, confident the maths is correct and the theory stands up.
These camps are not mutually exclusive of course. Theorists understand engineering. Engineers draw on their deep understanding of the theory. It’s normally a pretty harmonious, if competitive, relationship.
Yet occasionally these two worlds collide. The theorists say something is just not possible and the engineers say: “We’re going to try it anyway – it’s worth a shot.”
There is one field of science where just such a contest has been raging for years, perhaps the most contentious field in all science/engineering – gravity control.
When, in the late 1980s, the aerospace engineer Dr Ron Evans went to his bosses at BAE Systems and asked if they’d let him attempt some form of gravity control, they should probably have offered him a cup of tea and a lie down. Gravity control was a notion beloved of science fiction writers that every respectable theoretical physicist said was impossible.
As Evans himself admits, it was a tough sell. “Let’s be clear – there were many people in the company who felt we shouldn’t do it because we made aeroplanes and this was highly speculative.” Pushing against gravity with wings and jets was BAE’s multi-billion pound business, why dabble in scientific heresy? Because, as Evans puts it: “The potential was absolutely enormous. It could totally change aerospace.”
If it was possible to make gravity push instead of pull, they would have a potentially infinite – and free – source of propulsion. It would put BAE Systems at the forefront of the greatest technological breakthrough since the invention of powered flight. It might just be worth a small punt.
They asked Evans to go away, consult with his colleagues and come up with some concepts. He brought them a drawing of a vertical take-off plane, powered by an as-yet non-existent “gravity engine”.
He worried it didn’t look visionary enough, so he asked the artist to add some green rays emanating from the plane – a green glow. When Evans’s bosses decided to give him a small budget and an office, Project Greenglow was born. “It was incredible, everyone was captivated by what we were trying to do. We were overwhelmed.”
Evans soon discovered he was able to call on engineers at leading UK universities to help with the research, and it wasn’t just academic curiosity. Like BAE, everyone was looking for the next propulsion paradigm. Wings and jets had reached their limits.
In the US, Nasa aerospace engineer Marc Millis began a parallel project – the Breakthrough Physics Propulsion Program. Nasa had committed to getting beyond the solar system within a generation, but knew conventional rockets would never get them there.
Learn more: Project Greenglow and the battle with gravity
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