Customizable Turbofan Engine Model - Front Fan and 4-Stage Core (Educational)
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Parametric turbofan: big front fan plus 4-stage core. Customize stages, fan blades and span in TrueGeometry Playground.
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Informacje o modelu
- Źródło
- Printables
- Kategoria
- Other 3D Objects for Learning
- Licencja
- Creative Commons — Attribution — Noncommercial
Heads-up, honestly: this is an untested print. The fan rotor IS a separate STL from the 4-stage core, but a spinning assembly has NOT been verified - no interference or tolerance check has been run, so treat it as a display and classroom model until a test print proves the fit. If you print it, please post a Make, it genuinely helps.
WHAT IT IS
A parametric desktop turbofan: a big 12-blade front fan (NACA 4412 sections) ahead of a 4-stage axial compressor core, built natively in TrueGeometry Playground from two commands (/aerofoil jet + /aerofoil fan). Engine axis is Z.
CUSTOMIZE IT
The recipe is variable-first. Change the /set_var lines and rerun:
core STAGES 3/4/5, RADIUS 15/20/25 mm, LENGTH 60/100/140 mm; fan presets FANBLADES 9/12/18, FANSPAN 30/40/50 (edit the /aerofoil fan line).
The full how-to is in the attached PDF guide, the recipe file is attached, and the same commands are below.
FULL TRUEGEOMETRY PLAYGROUND RECIPE
// #2 TURBOFAN - big front fan + compressor core
// Presets: FANBLADES 9/12/18, FANSPAN 30/40/50, core STAGES 3/4/5
/set_var STAGES 4
/set_var RADIUS 20
/set_var LENGTH 90
/set_var FANZ (0-$LENGTH/2-7)
/aerofoil jet $STAGES $RADIUS $LENGTH
/tag_last Core
/aerofoil fan 4412 12 40 12 30 -15 6
/tag_last FanRotor
/move @FanRotor 0 0 $FANZ
HOW TO RUN
Open Playground (link below), Cancel the agent popup, open the Script panel in the bottom toolbar, paste, Run. Detailed steps with markers in the attached guide PDF.
FILES
2_turbofan_assembly.stl - the full model, fan + core (main file)
2_turbofan_fanrotor.stl - the 12-blade front fan alone
2_turbofan_core.stl - the 4-stage compressor core alone
recipe txt - the commands above
guide PDF - how to run and customize in Playground
LINKS
Build it yourself in TrueGeometry Playground: https://www.truegeometry.com/CoreWebGLTG/KBEAgentHTTP.html
Full article with presets, tables and FAQs: https://blog.truegeometry.com/0_0_0_0/blogs/post-fa56fc40.html
Part of a 5-model jet engine family: turbojet, turboprop, compressor blade on a stand, desktop wind turbine.
License: CC BY-NC 4.0. Free for students, teachers and makers to print and learn from; commercial use needs TrueGeometry's consent.
Made with AI assistance (disclosed honestly). Images are live Playground captures; the preset card is a render of the recipe lines.