Chinese scientists build hypersonic generator for power-hungry weapons of the future

The device produced more than 10 times the power generated in previous experiments, they said in a paper published in the peer-reviewed Chinese Journal of Theoretical and Applied Mechanics on January 19.

The MHD generator produced rapid pulses of electric current of up to 212 kilowatts using less than one litre of hypersonic gas, showing its potential to release a burst of energy in an extremely short period of time for military use, according to the researchers. The electricity produced in these facilities needs to be stored in supercapacitors so the energy can be released in a split second. Supercapacitors are heavy and bulky, and repeat use puts a huge burden on their costly, complex components.

Some large laser weapons under development would need a megawatt or more of electricity to destroy a target from a long distance. An MHD generator works efficiently with gas at high temperatures. But the faster the gas travels, the more quickly it cools. Mobile platforms for pulsed energy weapons, such as warships, planes and trucks, would have to overcome many engineering problems to be able to host a detonation shock device, he said.

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