"Generate a realistic 3D model of a small turbojet engine (max 0120mm, length ≤300mm). It has a single-stage centrifugal compressor (0≤120mm), an annular combustion chamber with 6 injectors, and a single-stage turbine with heat-resistant alloy blades. The exhaust nozzle is fixed. The engine includes FADEC control and runs on kerosene. Thrust ≥25 kgf, weight ≤3 kg. The model should be detailed and technically accurate."