About: http://webisa.webdatacommons.org/1960714

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Pulsed Plasma Thrusters (PPT) currently designed employ springs or other mechanical devices to convey or advance a solid fuel bar.
http://www.w3.org/ns/prov#wasQuotedFrom	jhuapl.edu