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The Cerberus multi-headed aerospike engine has 8 component 'FIDO' enginlettes, each of which needs to be independently fed with fuel and oxidiser,
and the assembly shown on the right is one of the modules that provides such functionality. The total weight is 1.25Kg.
It consists of a duplicated set of turbine fuel-flow meters, shut-off valves, and flow-control valves - one each for the fuel and oxidiser. The oxisider path needs paticular attention paying to it
since the design calls for the transport of two oxidiser types during different phases of flight.
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