JET - FA
Jet Engine Model - Fan Assembly (Product ID: JET-FA)
What is this?
This is a 3D printed Fan Assembly on the Jet Engine!
A jet engine is a magnificent machine that burns energy-rich, liquid fuel and release hot exhaust gas to generate an extremely powerful pushing force called thrust. The thrust pushes a plane forward and take you to your desired destinations around the world.
The Fan is usually the first thing that you notice when looking at the front of a jet engine. As it turns, it sucks in a tremendous quantities of air into the engine. Some of the air is directed into the engine’s core, whereas the rest of the air, called “bypass air”, is moved around the outside of the engine core through a duct. This bypass air produces the majority of an engine’s thrust (in today’s modern turbofans).
In all of my previous 3D printed Jet Engine models, the whole Fan was either printed as a single piece, or two halves and then joined together. Although this approach saves a lot of manufacturing time (print & build) and the Fan still looks really nice, it doesn’t truly represent how a real Fan was made. That’s why in this project, I decided to completely redesign the whole Fan to make it looks much better and more realistic.
The new Fan Assembly consists of a number of key components that you can easily identify by looking at a real jet engine:
1, Nose Cone (again, the black nose cone and the white spiral was printed all together using a dual-extrusion 3D printer)
2, Fan Blades (each fan blade was printed separately at 0.1mm layer height to ensure it is absolutely perfect. Also, each fan blade has a silver leading edge and a turquoise blue body, all printed together using a dual-extrusion 3D printer)
3, Annulus Filler (annulus fillers provide a smooth aerodynamic profile between each fan blade into the compressors)
4, Fan Disc (A fan disk is the central hub of a fan in a turbofan engine. Fan blades are attached to the fan disk. In operation, the fan disc must withstand the centrifugal force of the attached fan blades)
5, Windage Shield (provides an aerodynamic line between the Fan and the IP compressor)
6, Fan Shaft (the fan shaft is bolted to the fan disc)
Ready to order?
Overall dimensions (without Stand): Fan Diameter: 330mm, Height: 156.68mm
Manufacturing lead time: 2 – 3 weeks
Total number of components (exclude fasteners): 43 (see break down below)
Total number of 3D printed parts: 42
Total number of bought-in parts: 1 (ball bearing)
Material used: PLA, Breakaway
3D printer: Ultimaker S5
What can you use this model for?
The 3D printed Fan Assembly model is an excellent kit for STEM engagement because:
– It helps capture attention of young students instantly and engage with them more effectively. By explaining and asking questions about the model, I can attract students’ interest and curiosity about Jet Engines (e.g. what it is, what it does, how it is made, etc.)
– It helps the students better and quicker understand how the Fan on a Jet Engine works by being able to explore a physical model and interact with it (rather than looking at pictures or CAD model of an engine via an App on phones or tablets).
– The model was entirely made by 3D printing, hence, it helps spark interesting conversations with the students about how technologies (such as additive manufacturing) are revolutionising the Engineering Industry today and how they can learn the skills that would benefit their careers in STEM the near future.
– Because the model has a high level of complexity and is also an excellent representation of a real Fan on a jet engine, it can be used to support and engage with audience of all age groups, from very young kids to professionals
– Finally, with its excellent quality and finish, this model can also be used as an award, trophy, gift or simply a super cool item in your personal aerospace collection!
1, Does it spin? Yes, it does when you put in on the Stand
2, Can I take the Fan off the Stand? Yes
3, Can the Fan be driven by a motor? Yes, but not on this current design, perhaps in another design in the future
4, Can the model be stripped down to piece part level? Yes
5, Does the model come in a box? Yes, the model is well packed. It comes in a box with a manual
6, Does the model come fully assembled or as a kit? Entirely up to you to decide
7, Does it work like a real fan on a jet engine? No, this is only an educational model so please don’t put it on your RC airplane