Inspired by the original Von Braun rocket thruster, designed according to the principles of physics and chemistry.
Liquid Nitrogen is pumped through the network of tubes in the nozzle to negate the heat from the output. Semi-rigid mounts hold the unit together while allowing for expansions and contractions caused by the heat fluctuation.
Oxygen and Nitrogen are kept in separate compartments and pumped through to the mixing chamber as and when required to prevent spontaneous combustion in outer space.
A lower turbofan engine is being used by the craft within the atmosphere.