Block of powder
A block of powder , in the field of the Astronautics, is a block of Propergol solid, cast in an envelope or preformed, whose form is adapted to a given evolution of the surface of combustion.
The corresponding terms in English are propellent grain and grain .
The terms of block of powder preformed indicate a block of powder moulded before the loading. In this case, the corresponding terms in English are formed grain and pressed grain .
Right French: decree of February 20th, 1995 relating to the terminology of sciences and space technology.
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