For engines with high-speed rotating blades, ingestion of foreign matter and dust may cause damage and power loss by wear.
In particular, helicopters where the take-off and landing sites are not constant and are often used near the ground surface, it is necessary to have a device to avoid such inhalation.
These devices are installed as part of the helicopter structure, but in rare cases there are also turboshaft engines incorporated as part of the engine structure.
This is called an "integrated inlet particle separator (IPS)" and has a complex structure.
This time, I created a model whose structure is easy to understand.
A. The features are as follows.
① Special Inlet case having
a. Vanes and air passage to produce swirl force,
b. Scroll duct to collect particle.
c. Oil tank is consisted.
② Blower driven by Accessary Gearbox is attached to Scroll.
③ Free turbine type engine with the direct output power shaft.
④ Axial and impeller combined type compressor.
⑤ No metal bearing is used for this model to reduce cost.
⑥ To ease separation IPS, GG and FT, clamps are used as optional.
B. Assembly Manual (PDF format, total 17 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)".
C. Purchase Parts Information;
φ4, 6, 8 See Parts List
Micro screws M1.4x3.5L & M1.4x6L - Direct screw-in to 1 mm dia hole (No nut)
But if you have the M1.4 Tap, it will be very useful.
Screws M2 x ** - See Parts List
D. STL file
Total STL files are 41 items including the stand and tools.
“ws” of last 2 digits of file name means “With Support” special designed.
E. Total Net Print Time: Approx. 82HR
- (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.
F. Printing settings
Raft, Support, Layer Height, Infill: Depending on your experience.
My models were printed by "idbox" using with 0.4 nozzle, 1.75 PLA.
I do hope your success!!