Jet Engine, 3-Spool

cults3d

For the latest jet engine for passenger planes, the bypass ratio is getting bigger and bigger to boost engine performance. To make one of them a reality, a three-spool system was developed. A 3D model was created to explain this system. The design points are as follows: For each spool's rotation, ball bearing methods and dummy bearing methods were prepared. This time, all stator vanes were omitted to avoid vane-blade rub. Each rotor is designed with support so it can be printed in one piece. The blade angle was made to match the spool rotational direction (view from rear). HP Spool: Clockwise IP Spool: Counter-clockwise LP Spool: Counter-clockwise In addition, parts that are difficult to print without support were prepared as STL files with support. The last two digits of the file name identify these parts with a "ws" suffix. To make it easier to understand each part's contents and assembly order, a parts breakdown list was created. Downloadable files include: - STL Files - Images: Parts Breakdown for Assembly Aid - Excel File: Parts List Purchase Part Information: -Bearings (dummy BRGs can be used instead of the following; see parts list) DDL-1370ZZ (7 x 13 x 4) 2ea - For IP-Spool 689ZZ (9 x 17 x 5) 2ea - For HP-Spool 6900ZZ (10 x 22 x 6) 2ea - For LP-Spool -Aluminum Tubes: see parts list -Screws: Micro screws M1.4x3L - Approximately 50 ea - Direct screw-in to 1 mm dia hole (no nut) Screws M2 x 6L - 6 ea, see parts list Assembly Points: Standard skills such as drilling, tapping, filing, tightening, painting, and gluing are needed, along with perseverance. Total Net Print Time: Approximately 42 hours Estimated print time is based on PLA material, 0.4mm nozzle, 0.2mm layer height, 40% infill, no raft or support. Note that actual print parameters may vary. [Update] Optional Fan: https://cults3d.com/en/3d-model/tool/jet-engine-3-spool-optional-fan - February 15, 2018 Modified Rotor: https://cults3d.com/en/3d-model/tool/jet-engine-3-spool-modified-parts - March 21, 2018 [Update July 12, 2018] Revised Description only.