A UK aerospace company say they have started construction of the largest practical nuclear fusion rocket engine ever built.
Pulsar Fusion announced the 8-metre fusion chamber is being assembled in Bletchley, England.
They claim that when it is fired in 2027, it will temporarily become the hottest place in the solar system, creating exhaust speeds of over 500,000mph.
The researchers hope to reach several hundred-million degrees when the final plasma shot is fired in the chamber, creating temperatures hotter than the Sun.
Pulsar say the technology has the potential to half the mission journey to Mars, and reduce flight time to Saturn from 8 years to two.
Dr James Lambert, CFO of Pulsar, explains: "The difficulty is learning how to hold and confine the super-hot plasma within an electromagnetic field.
"The plasma behaves like a weather system in terms of being incredibly hard to predict using conventional techniques. Scientists have not been able to control the turbulent plasma as it is heated to hundreds of millions of degrees and the reaction simply stops.
"This unpredictability is attributed to the science Magneto-Hydro Dynamics (MHD) and Gyrokinetics, the state of the plasma is changing all the time.
"Scientists can get to fusion temperatures, as recently demonstrated at the Lawrence Livermore laboratory in 2022, and this will be achieved again more often going forward, but small improvements can dramatically improve the results in our favour."
Pulsar Fusion believe recent advances in machine learning techniques may have "changed the playing field" in favour of scientists in this field. They have teamed up with Princeton Satellite Systems to take the data from the World record holding PFRC-2 reactor, feed it into supercomputer simulations to better predict how super-hot plasma behaves under electromagnetic confinement and thus, guide and improve the design of the rocket engine prototype.
Pulsar’s CEO Richard Dinan says: "Our current satellite engines we make today at Pulsar, produce up to 25 miles per second in exhaust speeds. We hope to achieve over 10 times that with fusion.
"If the Pulsar rocket test can achieve fusion temperatures at its demonstration to Aerospace partners in 2027, then the technology has the potential to half mission times to Mars, reduce flight time to Saturn from 8 years to 2 and ultimately empower humanity to leave our solar system.
We will be keeping our existing partners up to date at every step even as we begin early firings in 2025, we will be able to know if we are on the right track. Pulsar would then need to conduct a test firing in orbit.
"To the fusion community, AI truly does have the potential to allow us to achieve engines capable of interstellar space travel."
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