Upcoming
This part or feature is not in the game, but could be added in a future update.
This part or feature is not in the game, but could be added in a future update.
The "Double 2" and the "Double 1" are an upcoming type of engines published by Stef along with others in the official Discord server.[1] Its information is mostly unknown, but some that are confirmed are listed in the Infobox on the right.
This types of engine are possibly used on the first stage of medium rockets, but it can be occasionally used on the second stage of larger rockets. Due note that the "Double 1" looks very familiar to the real life Aerojet LR87 known from the Titan family of rockets.