Mars Solid Rocket

[aerostadt]

NASA has chosen for a solid rocket for the Mars Ascent Vehicle.

https://spaceflightnow.com/2020/04/20/nasa-narrows-design-for-rocket-to-launch-samples-off-of-mars/

 

[John Done]

Previously, NASA also considered using a single-stage hybrid propulsion system that would burn wax-based solid fuels using a liquid oxidizer. Such a scheme was considered due to concerns that prolonged exposure to the cold would negatively affect the properties of solid fuels.