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Turboprop Engine, for Business Aircraft, Free Turbine Type, Cutaway

Creation quality: 5.0/5 (1 vote)
Evaluation of members on the printability, utility, level of detail, etc.

3D model description

This is a model of the Turboprop Engine for Business Aircraft, etc.
Engine of this class has many features other than the large size jet (fan) engine.
- Smaller size - Higher RPM - Lighter weight
These features make the complex air flow and unique configuration.

There are two types of this class engine;
- Direct drive
This type model was uploaded to the following URL.
- Free turbine
This cutaway model is the free turbine type.

  • Features of this model has 2 major assemblies
    ①. Free Turbine Assy (Forward of Engine)
    (1) Power Turbine Rotor
    (2) Dual Planetary Reduction Gearing
    (3) Exhaust Ducts
    ②. Gas Generator Assy (Backward of Engine)
    (1) Circumferential Type Air Intake
    (2) Combination Type Compressor (Axial + Centrifugal)
    Note: Stators of Axial Compressor are intentionally omitted to avoid rubbing during rotation.
    (3) Reverse Flow Combustion Chamber
    (4) Axial stage Turbine
    (5) Accessory Gear Box (including Oil Tank)

  • Assembly Manual (PDF format, total 19 pages)
    The detail assembly manual including "Parts-List", "After printing treatment" and "Assembly procedure" are prepared based on "Standard Skill (Filing, Drilling, Tapping and painting)".

Download files includes;
-files: STL Files (60 items)
STL file name: "ws" of last 2 digits means "With Support" which special designed.
-images: Parts Breakdown for assembly Aid, Subassembly Photos
-PDF (Zip) File: Assembly Manual

Purchase Parts Information; (No Metal Ball Bearing is used)
-Aluminum Tubes
See Parts List
Micro screws M1.4x3.5L - Appox. 50 ea - Direct screw-in to 1 mm dia hole (No nut)
Screws M2 x ** - See Parts List

Total Net Print Time: Approx. 50HR
- (Estimated as case of PLA, 0.4mm Nozzle, 0.2mm Layer Height, 40% infill and No raft and support)
Note: When at actual print, each parameter may be adjusted by your experience.

This is the most challengeable item in the creations which I made before.
I do hope your success!!

[Update] - 2018.3.14
Photo of typical special support is added.
[Update] - 2018.7.12
Revised Description only.
[Update] - 2018.7.19
Modified Comp-Rotor901ws.stl is introduced.
[Update] - 2018.7.20
Modified Comp-Rotor901ws.stl was changed to
Comp-Rotor801ws.stl and 3-piece type
[Update] - 2021.4.12 Improved files and related figure uploaded
Comp-Rotor-1st-01ws.stl → Comp-Rotor-1st-101ws.stl
Comp-Rotor801ws.stl → Comp-Rotor801aws.stl
[Update] - 2021.4.14 Improved file
Comp-Rotor-1st-101ws.stl - Re-changed
[Updated] - 2022.2.24
"Note" added in ②(2)
[Update] - 2022.6.20
"Assembly-Manual-R01" reflected above Mod-Parts is uploaded

3D printing settings

3D printing settings
Raft, Support, Layer Height, Infill: Depending on your experience.
But the parts having gear, small shaft and thin portion: 100% infill is recommended.
My models were printed by "idbox" using with 0.4 nozzle, 1.75 PLA.

3D printer file information

  • 3D design format: STL and ZIP Folder details Close
    • AC-Bleed-Valve01.stl
    • AC-Cap01.stl
    • AC-GB-Body01.stl
    • AC-GB-Cover01.stl
    • AC-GB-Cover02ws.stl
    • AC-GB-Cover03.stl
    • AC-GB-Cover04.stl
    • AC-GB-Frt01.stl
    • AC-Impeller01.stl
    • AC-Tube01.stl
    • Acc-Gear01.stl
    • Assembly
    • Assembly
      • Assembly Manual-R01.pdf
    • C-C-Spacer01.stl
    • C-Chamber01.stl
    • Comp-Rotor-1st-01ws.stl
    • Comp-Rotor-1st-101ws.stl
    • Comp-Rotor-2nd-01.stl
    • Comp-Rotor-3rd-01.stl
    • Comp-Rotor01ws.stl
    • Comp-Rotor801aws.stl
    • Comp-Rotor801ws.stl
    • Comp-Rotor901ws.stl
    • Comp-Spacer01.stl
    • Comp-Spacer02.stl
    • Exh-Pipe-Clamp01.stl
    • Exhaust-Case201ws.stl
    • Exhaust-Duct101ws.stl
    • Exhaust-Pipe01ws.stl
    • Front-Cover01.stl
    • Fuel-Nozzle01.stl
    • GT-Rotor02.stl
    • GT-Rotor101.stl
    • GT-Stator101ws.stl
    • Gas-Gene-Case101ws.stl
    • Gear10-5-5-01.stl
    • Gear10-5-5-901.stl
    • Gear16-2-6-01.stl
    • Gear16-3-Sun01.stl
    • Gear20-2-6-01.stl
    • Gear28-3-Ring01.stl
    • Gear28-Carrier01ws.stl
    • Gear28-Carrier02.stl
    • Gear36-3-Ring01.stl
    • Gear36-Carrier01.stl
    • Gear36-Carrier02.stl
    • Gear8-5-2-101.stl
    • GearCase-Front101ws.stl
    • GearCase-Rear01ws.stl
    • Impeller101.stl
    • Inlet-Vane01.stl
    • Intake-Mesh101ws.stl
    • P-Shaft-Brg01.stl
    • P-Shaft-Gear01.stl
    • P-Shaft-Spacer01.stl
    • PT-BRG-Hsg01ws.stl
    • PT-Rotor02.stl
    • PT-Rotor101.stl
    • PT-Stator01.stl
    • Prop-Blade101ws.stl
    • Prop-Hub101.stl
    • Prop-Shaft01.stl
    • Prop-Spinner102ws.stl
    • Prop-Spinner201.stl
    • Rotate-Tool02.stl
    • Rotate-Tool03.stl
    • Rotate-Tool04.stl
    • Stand-FT-Assy01.stl
    • Stand-GG-Rr01.stl

    Learn more about the formats

  • Last update: 2022-06-20 at 08:39
  • Publication date: 2017-12-22 at 04:14





Retired Aircraft Engine Engineer
Aichi, Japan
"Aircraft Engine Museum by 3D Printer Models"

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