Assertion: gunpowder's grain | /r/CapableOf | bond to the motor casing
Facets:
value: securely
type: MANNER
Source sentences:
text: Charles Bartley, employed at JPL (Caltech), substituted curable synthetic rubber for the gooey asphalt, creating a flexible but geometrically stable load-bearing propellant grain that bonded securely to the motor casing.