Description

The big thruster generates thrust through the combustion of liquid fuel with liquid oxygen. It can handle both CH4 (methane) and H2 (hydrogen) as its fuel. It uses a radial aerospike nozzle and it's very efficient at converting combustion energy directly to thrust. It can produce up to 1.8 MN of thrust from a flow rate of 100 Kg/s LOX and 12.5 Kg/s H2.

Usage

Connect high flow oxydizer and fuel to the fluid ports, high voltage for ignition, and send 1 in the data port to ignite.

Initial ignition will only occur when the flow rate is between 1 g/s and 50 kg/s, for either the fuel or the oxydizer.

When the fuel is H2, the optimal flow ratio is 8:1 (LOX:H2) and and ratio of < 1:1 may result in a flame out (no combustion). When the fuel is CH4, the optimal flow ratio is 4:1 (LOX:CH4) and and ratio of < 1:1 may result in a flame out (no combustion).

The igniter does not need to be kept on once combustion has begun, although it's a good idea to leave it on in case of a flame out. Ignition consumes 1000 watts continuously when on.

The big thruster's nozzle can gimbal with a variation of -10 to +10 degrees in two axes.

List of inputs

List of outputs

If your fuel tank is pre-mixte, you don't need to use both fluid ports.