propulsion Archive

lasersBeam propulsion background and Breakthrough starshot update

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Beamed propulsion could achieve single stage to orbit. It could be 6 to 100 times cheaper. Most of the rocket becomes payload. DARPA funded developing a heat exchanger for direct energy. They tested a microwave beam director for a 100KW …

magneticRobert Zubrin has new propellentless space propulsion concept – Dipole Drive

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Robert Zubrin was an inventor of the magnetic sail with Dana Andrews when they looked at the drag of a magnetic scoop intended for a Bussard ramjet. The magnetic sail would be great for a lighter braking mechanism for interstellar …

controversialSonny White at Eagleworks scaling EMdrive experiments to 400 watts

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Breakthrough Discuss is an academic conference focused on the question of life in the Universe. More information on the Breakthrough Initiatives is available at https://breakthroughinitiatives.org. Sonny White has a new paper Spacedrives and Conservation Laws Raymond Sedwick University of Maryland, …

futureBreakthrough Interstellar Starshot Cost and Engineering System Model

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Arxiv – Breakthrough Starshot is an initiative to prove ultra-fast light-driven nanocrafts, and lay the foundations for a first launch to Alpha Centauri within the next generation. Along the way, the project could generate important supplementary benefits to solar system …

laserMaterials for the Interstellar Starshot lightsail

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Nature materials -Materials challenges for the Starshot lightsail A solar sail able to be pushed by lasers to 20% of light speed would need to be about 10 square meters but weigh less than a gram. The sail will have …

laserMaterials for the Interstellar Starshot lightsail

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Nature materials -Materials challenges for the Starshot lightsail A solar sail able to be pushed by lasers to 20% of light speed would need to be about 10 square meters but weigh less than a gram. The sail will have …

futureHolographic sails fixes last technical issues for interstellar laser pushed sails

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Greg Matloff and his wife, C Bangs, have researched the use of holographic films for solar and laser pushed space sails. Matloff’s work is described at Centauri Dreams. Greg Matloff is on the Advisor’s Board of Yuri Milner’s $100 million …

astronomyCarnival of Space 556

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1. Universe Today – Launching Rockets from Balloons is About to be a Thing, But We Need a Better Name than “Rockoons” 2. Universe Today – Astronomers Just Found 72 Stellar Explosions, but Don’t Know What’s Causing Them 3. Universe …

fusionPulsed Fission-Fusion (PuFF) Propulsion Concept gets Phase 2 NIAC funding

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The pulsed fission fusion propulsion (PuFF) system envisions using a pulsed z-pinch to compress a fission-fusion target. The resulting deflagration expands against a magnetic nozzle to produce thrust and generate recharge energy for the next pulse. A z-Pinch is a …

astronomyFuture Solar Sail Missions

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Les Johnson of the NASA Marshall Space Center provides a 37-page presentation on solar sails covering the technical details, past projects and future projects. Near-term work is with various cubesats and solar sails. Near Earth Asteroid Scout The Near Earth …