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Main-Rotor-Head, for Helicopter, Fully Articulated Type

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

3D model description

There are many different type of Main Rotor Head (MRH) for actual helicopter.
This model is a Fully Articulated Type Main Rotor Head to understand the basic Helicopter Rotor function.

The purpose of this model is used as the major component of the Helicopter-Power-Train model which driven by Turboshaft Engine (TSE) and Main Gear Box (MGB) created recently. (See URLs)

About Helicopter-Power-Train model image, refer to the photo.

The features of this model are:
1. Fully Articulated Type (Drag, Flap and Feather Hinge).
2. 4 Blades pitch changeable.
3. Rotating and Stationary Swashplate.
4. "Collective pitch" and "Cyclic feathering" motions are provided.

Next coming Model will be "Control Sticks (Collective and Cyclic)" for this MRH in near future.

Assembly Manual (PDF format, total 13 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 (29 items)
STL file name: "ws" of last 2 digits means "With Support" which special designed.

Purchase Parts Information;
- 1 Ball Bearing is required. 1 Roller Bearing is required for Tool.
- Screws and etc.
Micro screws M1.4x3.5L - 5 ea - Direct screw-in to 1 mm diameter hole (No nut),
Other size of Screws - See Assembly Manual.

Total Net Print Time: Approx. 27HR
- (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.

I do hope your success!!

[Update 2018/7/5]
Add Video URL
[Update 2018/11/14]
Revised Typo in Assembly-Manual-01(Zip)
[Update 2019/5/14]
"Fixing of MRH to Pipe" figure added

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
    • Assembly
    • MRH-Blade-Boss101.stl
    • MRH-Blade-Dummy101.stl
    • MRH-Boss-Cap01.stl
    • MRH-Boss-Lwr201.stl
    • MRH-Boss-Up201.stl
    • MRH-Boss-Up202ws.stl
    • MRH-Drag-Damper01.stl
    • MRH-EXT-Link101.stl
    • MRH-EXT-Shaft201.stl
    • MRH-Flap-Hinge301ws.stl
    • MRH-Flap-Pin-Stop101.stl
    • MRH-Flap-Pin01.stl
    • MRH-Flap-Sft201ws.stl
    • MRH-Link-Rod435-01ws.stl
    • MRH-Pitch-Arm301ws.stl
    • MRH-Pitch-Sft101.stl
    • MRH-Radome02.stl
    • MRH-Radome101.stl
    • MRH-Rod-Connect01.stl
    • MRH-SWP-Arm101.stl
    • MRH-SWP-Link202.stl
    • MRH-SWP-Link203ws.stl
    • MRH-Spherical201.stl
    • MRH-Stand-Post01.stl
    • MRH-Swashplate-Lwr102.stl
    • MRH-Swashplate-Lwr103.stl
    • MRH-Swashplate-Lwr301.stl
    • MRH-Swashplate-Up102.stl
    • MRH-Swashplate-Up301ws.stl

    Learn more about the formats

  • Last update: 2019/05/14 at 04:15
  • Publication date: 2018/07/01 at 10:46





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

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Add a comment


Dear Ajmichelswebcults3d

The M1.4 and M2 screws used in this model are Standard product and can be easily purchased at the local hardware store (DIY shop) and "Amazon". (in Japan's case)
The screw length specified in the assembly manual is not absolute, so adjust it accordingly.
I also often buy other hardware (bearings, springs, etc.) from "Amazon".
I'm glad if you can use it as a reference.

It isn’t explicitly stated in your assembly document, but are these machine screws or thread forming screws?

Also, does anyone have suggestions for where to source the hardware from. I am having a hard time finding the exact parts mentioned.

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