Assertion: powder's surface area | /r/HasProperty | exposed to the combustion gases
Facets:
Source sentences:
text: As the surface of the propellant burns, the shape evolves (a subject of study in internal ballistics), most often changing the propellant surface area exposed to the combustion gases.
text: As the surface of the propellant burns the shape evolves (a subject of study in internal ballistics), most often changing the propellant surface area exposed to the combustion gases.