Space and air-breathing propulsion is at a “critical crossroads” in the face of shrinking budgets and fewer new program opportunities, NASA Acting Associate Administrator Robert Lightfoot says. Speaking at the Joint Propulsion Conference here, Lightfoot says that to help counter these trends, the wider industry needs to be reminded about the criticality of propulsion technology as a whole. “Here’s my challenge: make propulsion relevant again. I think propulsion is being taken for ...


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