Terran R
Terran R is a planned partially-reusable heavy-lift launch vehicle. The first stage of the rocket will be reused up to 20 times, but the second stage of each rocket will be expended. Both stages use Methane and LOx as propellants. Terran R will use 13 scaled-up Aeon engines, Aeon R, in its first stage, and an upgraded Aeon Vacuum engine in its second stage. Terran R is planned to take flight in 2026.