Among those items reportedly slated for decontrol are sensors capable of testing missile silos, high-speed microprocessors with a wide variety of applications for military systems, solid and liquid rocket motors and spacecraft, advanced lasers, electronic navigation equipment, and sophisticated machine tools.

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Liquid-fuelled rocket engines work by mixing the fuel (in this case kerosene) with liquid oxygen at high pressure.

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Water from asteroids could be broken down in space to liquid oxygen and liquid hydrogen for rocket fuel.

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It is a two-stage rocket powered by liquid oxygen and kerosene.

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Wednesday's flight will use an Ariane 44L rocket equipped with four liquid strap-on boosters, the most powerful version of the Ariane-4 series.

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The Ariane 44L rocket equipped with four liquid strap-on boosters -- the most powerful in the Ariane-4 series -- lifted off at 7:16 p.m. local time (2216 GMT) from the European Space Agency (ESA) launch center in Kourou, on the northeast coast of South America.

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The term hybrid is used because this type of rocket motor uses neither all-liquid fuel nor all-solid fuel, but a combination of both.

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It is contained within the case of the rocket, into which is pumped a liquid oxidiser called high-test peroxide (HTP), a concentrated form of hydrogen peroxide which is relatively safe to handle.

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The concept calls for a two-stage rocket that would be powered by engines burning liquid oxygen and kerosene.

BBC: Science & Environment