Turbofan Engine, 1st Generation

cults3d

This is an imaginative replica of a high-bypass turbofan engine that significantly contributed to the beginning of the jet airliner era in the 1960s. (First Generation) The high bypass engine seems to refer to an engine having a bypass ratio of more than 2. Bypass ratio of this model is greater than 5. This type of engine is ducted over only part of the length of the engine, making it easier to assemble. A. The features are as follows. ① LP Compressor (Fan and Compressor) - 6 stages ② HP Compressor - 10 Stages ③ Can-Annular Combustion Chamber -8 Liners ④ HP Turbine - 3 Stages ⑤ LP Turbine - 4 Stages ⑥ LP and HP Spool can be turned by finger. LP Spool is connected by Lever. To avoid rubbing of Rotor, almost all of Stator Vanes and Nozzles are included. ⑦ Gearbox, Fuel Nozzle Adapters, Bleed Air Elbow are attached. Total size = 120 dia. x 450 long. B. Assembly Manual (PDF format, total 28 pages) The detailed assembly manual including "Parts-List", "After printing treatment" and "Assembly procedure" are prepared based on "Standard Skill (Filing, Drilling, Tapping and painting)". C. Download files includes; -files: STL Files (63 items) STL file name: "ws" of last 2 digits means "With Support" which is specially designed. D. Purchase Parts Information; -Aluminum Tubes See each assy images -Screws Micro screws M1.4x3.5L - Approximately 35 ea - Direct screw-in to 0.9 mm dia hole (No nut). But if you have the M1.4 Tap, it will be very useful. Screws M2 x *** - See each assy images E. Total Net Print Time: Approximately 150HR - (Estimated as case of PLA, 0.3mm Nozzle, 0.15mm Layer Height, 50% infill and Raft and support) Note: When at actual print, each parameter may be adjusted by your experience. F. 3D printing settings Raft, Support, Layer Height, Infill: Depending on your experience. But the parts having blade/vane, small shaft and thin portion: 120% infill is recommended. My models were printed by "idbox" using with 0.5 nozzle, 1.8 PLA.