Three-Shaft Turboprop Engine Model

Three-Shaft Turboprop Engine Model (1:30 TP400 Scale)

This is a detailed 3D-printable model of a three-shaft turboprop engine, loosely inspired by the TP400 (the powerplant used on the Airbus A400M). The model is designed at roughly 1:30 scale and showcases the internal, mechanical architecture of a modern turboprop engine, including:

• Gas Generator Stage – compressor assemblies driven by a high-pressure turbine
  
• Burner Section – where compressed air mixes with fuel for combustion
  
• Turbine Stages – extracting energy to drive the compressor and propeller
  
• 1:20 two stage spur and planetary Reduction Gearbox & Propeller Assembly – lowering shaft speed to drive large, efficient propellers
  

Model Features

• Easy to Assemble – requires only a handful of standard M3x10 and M3x5 bolts, as well as some glue for the stators.
  Almost Fully 3D-Printable – no bearings or complex hardware needed
  
• Movable & Functional – the turbine and low-pressure shafts are linked to the planetary gearbox, which transfers motion to the propeller assembly
  
• Demonstration-Friendly – best rotated via the compressor/turbine blades rather than the propeller (to avoid potential damage due to friction induced torque