/sci/ - Science & Math

>>15270129
>The use of water and waste gases as propellant, besides reducing the mass of the system by a factor of ten or more, has enormous safety implications. 90% oxygen by mass, water can be used to generate oxygen via electrolysis, a simple process. By weight, it is comparable to lead as a radiation shielding material, so simply by placing water reservoirs around crew rest areas, the ship can reduce the crew’s radiation exposure several fold over the course of a mission. It is an excellent heat sink and can be used to regulate the temperature of the ship environment. The abundance of water also allows the life support system to be based on a one-pass or open loop design. Open loop systems will be much more reliable and basically maintenance free compared to a closed loop system such as what is used on the ISS. The abundance of water will also make the ships much more comfortable on a long journey.
>These ships will not be destination specific. They will be able to travel to destinations throughout the inner solar system, including cislunar space, Venus, Mars and with a large enough solar photovoltaic sail, to the Asteroid Belt and the dwarf planets Ceres and Vesta. They’ll be more like the Clipper ships of the past than the throwaway rocket + capsule design pattern we’ve all grown up with, and their component technologies can be upgraded with each outbound flight.
https://www.centauri-dreams.org/2016/06/28/spacecoach-toward-a-deep-space-infrastructure/

>>15207353
>pressurize it and spray it through the RCS
No, its going into the main drive
>Spacecoach concept is to use urine and gas as propellent for electric engine propulsion for long duration space missions to reduce mass by 20 times
https://www.nextbigfuture.com/2016/06/spacecoach-concept-is-to-use-urine-and.html

>>15192412
https://www.centauri-dreams.org/2016/06/28/spacecoach-toward-a-deep-space-infrastructure/