Fun fact: Steel rails on the moon aren't the best idea. Instead, roads made of sintered regolith + trains with ceramic wheels are cheaper to build and have the same efficiency that steel wheels+ steel rails have.
@TerranFenrir@mondoman712 the strength requirements for rails are much lower on the moon. I would also assume movement isn't going to be driven by the wheels (low gravity gives low friction), so that isn't a driving concern either (pun fully intended)
I wonder if they are having trouble with microplastics in the Paris Subway system. I marveled at their quiet subways while I was there and saw they use what looks like rubber wheels on their carriages.
3 Comments
TerranFenrir@lemmy.ca · 5 pts · 1y
Fun fact: Steel rails on the moon aren't the best idea. Instead, roads made of sintered regolith + trains with ceramic wheels are cheaper to build and have the same efficiency that steel wheels+ steel rails have.
LovesTha@floss.social · 3 pts · 1y
@TerranFenrir @mondoman712 the strength requirements for rails are much lower on the moon. I would also assume movement isn't going to be driven by the wheels (low gravity gives low friction), so that isn't a driving concern either (pun fully intended)
tpid98@lemmy.sdf.org · 1 pts · 1y
I wonder if they are having trouble with microplastics in the Paris Subway system. I marveled at their quiet subways while I was there and saw they use what looks like rubber wheels on their carriages.