Ultrahigh Acceleration Neutral Particle Beam Driven Sails

James Benford presents his Ultrahigh Acceleration Neutral Particle Beam-Driven Sails at Space Access 2019. The Neutral Particle Beam-Driven Sails could enable an interstellar probe to alpha centauri that would be 1000 times larger and 60% of the speed of the current Starshot laser-driven proposal. Centauri Dreams had an article on the neutral beam driven sails. …

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Update on Microwave Beam-Heated Propulsion

Kevin Parkin described the history and status of microwave beam-heated propulsion at Space Access 2019. Technical summary is at Parkin Research. Kevin showed more pictures of the test systems. Kevin gave a previous update on beam propulsion in 2018 at Breakthrough Propulsion. Kevin wants to get heat reflectors and better coatings tested in a $1 …

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