propulsion Archive

physicsPropellantless interstellar travel using electric fields that is better than laser driven sails up to 5% of light speed

Laser-driven sails are limited to about 6.67 Newtons per gigawatt. The Three Gorges Dam has a capacity of about 22.5 GW. If this was transmitted with 100% efficiency to a light sail it would provide thrust equivalent to the force …

propulsionElectrospray Ion drive scalable to thousands of times the thrust of existing ion drives

Accion Systems uses electrospray ion drive propulsion. The thrust-producing ions are supplied from their ionic liquid propellant — a safe, non-toxic liquid salt. This novel source of ions allows us to avoid the use of large ionization chambers, pressurized tanks, …

futureGeoffrey Landis reviewed interstellar propulsion concepts

Geoffrey Landis works at NASA and has made many contributions to advanced space concepts. In particular to laser pushed sails. The interstellar distance issue was summarized Moon 0.5 million kilometers Mars 50 million kilometers (100X Moon distance) Jupiter 600 million …

mach effectMach Effect Thruster still works as Tajmar team made substantial mistakes in their tests

The Nasa Space flight forum has a report on the Mach Effect Thruster test. Above is what Woodward hopes to eventually build for propellentless space travel Here is the kind of device they are testing now February 2018, James Woodward …

lasersBeam propulsion background and Breakthrough starshot update

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 propellantless space propulsion concept – Dipole Drive

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

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

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

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

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 …