Solid Fuel Thruster
Solid Fuel Thruster is a secondary rocket engine that burns Oxylite and Iron to add distance.
A thruster cannot be used to launch a rocket on its own, and must be built on top of an existing rocket engine (steam, petroleum or hydrogen).
Nominally, a thruster adds 12,000 km distance to the rocket, but it also weighs 1000 kg (the amount of fuel cannot be adjusted), meaning that for heavy enough rockets the distance is actually decreased. For the same reason, mounting multiple thrusters on a rocket is not recommended.
The primary use of thrusters is a minor push to Steam Engines, making it possible to acquire resources from asteroids in the 10000 km range or send research modules 20000 km away. They may also be used to decrease the liquid fuel consumption for more advanced engines at the expense of using more Oxylite and Iron.
