Extreme Solar Sails Will Slingshot Around the Sun to 0.1% of Lightspeed

Solar sails made out of extreme metamaterials, nanostructured and with some ceramics will be able to withstand over 1000 degrees celsius. They will reach slingshot within 2-5 solar radii of the sun, which is 2 to 4 times closer than the Parker solar probe. The solar sails should cost about $10 million per launch and …

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Solar Towers For Lunar Energy and Microwave Moon Mining

NASA NIAC has an update on the Lunar Polar Mining Outpost (LPMO). It is a breakthrough mission architecture that promises to greatly reduce the cost of human exploration and industrialization of the Moon. The first invention, Sun Flower™ stems from a new insight into lunar topography. Multi-kilometer landing areas in lunar polar regions are likely …

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Over 100 Times More Energy Efficient Moon Mining By Sorting Ice Grains

Micrometeoroid bombardment has already broken most solid material in the upper part of the regolith into fine grains. This includes solid material of all compositions, including the ice, which is as hard as granite at PSR temperatures and is therefore essentially another type of rock. These ice grains are intermixed with all the other minerals, …

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Diffractive Lightsails

Unlike a reflective solar sail, a sun-facing diffractive solar sail uses a component of force perpendicular to the sun line. This allows navigation without sacrificing the amount of solar power on the sail. The angular deviation of light from a diffractive film may be engineered to provide electronic, rather than mechanical, navigation protocols, e.g. by …

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What Tesla Has Now and the Next Two Years

There are several important things that were mostly overlooked in what Elon Musk said yesterday at Battery Day. Elon Musk stated that 2020 car deliveries will be 30-40% over 2019. Tesla had 367,500 cars delivered in 2019. This means Tesla would have between 477.7k-514.5k cars delivered in 2020. This means Elon is repeating that 300k …

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Sparse Antenna Array for Detailed Climate and Weather Modeling

R-MXAS is a revolutionary aerospace architecture for realizing a synthetic aperture imaging radiometer (SAIR) in a manner affording unprecedented sparsity in terms of number of antenna elements. As such, it enables a feasible path to space-based implementation of RF apertures of unprecedented size. The R-MXAS system is a single platform comprising a 1-D sparse antenna …

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SPEAR Using a Fission Reactor and Advanced Thermoelectrics

The Swarm-Probe Enabling ATEG Reactor, or SPEAR, is a nuclear electric propulsion spacecraft that uses a new, lightweight reactor moderator and advanced thermoelectric generators (ATEGs) to greatly reduce overall core mass. This will subsequently require a reduction in operating temperatures and reduce the total power levels achievable by the core. However, the reduced mass will …

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Pulsed Plasma Rocket

Howe Industries is investigating a Pulsed Plasma Rocket system that can produce 20,000 lbs of thrust with an Isp of 5,000 seconds. The Pulsed Plasma Rocket (PPR) is smaller, less complex, and more affordable. They fire a 2 kilogram bullet down a barrel where it gets converted into plasma and generates the thrust. They think …

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