Cutaway turbofan aircraft engine model, 3D kit - AEROS
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Assembly kit 3D printing Immerse yourself in the heart of an airliner with this cutaway turbofan jet engine model, for you to assemble yourself. Its parts are 3D printed in metallic-finish PLA: the blades and casings take on copper and silver highlights, the inlet cone shines like polished metal, and the whole assembly rests on a black base that presents it like a museum piece. The cutaway reveals the architecture of the high-bypass engine: the large fan at the front, followed by the compressor stages, the combustion chamber, and the turbine. Once assembled, a small battery-powered motor spins the blades, allowing you to understand at a glance how air is drawn in, compressed, and ejected. Delivered in a black box with its parts secured in foam, this kit, measuring approximately 28 × 15 × 10 cm, will appeal to aviation enthusiasts, engineers, and anyone who enjoys understanding how machines work. A desktop object that is as educational as it is decorative.
Version and finish
The turbofan, engine of airliners
The high-bypass turbofan engine powers almost all modern airliners. At the front, a large fan draws in a huge amount of air. A small portion of this air, the core flow, enters the heart of the engine: it is compressed by several compressor stages, mixed with fuel, and burned in the combustion chamber. The hot gases then pass through the turbine, which recovers part of their energy to drive the compressor and fan, before being ejected toward the rear.
Most of the air, the bypass flow, bypasses the engine core and is simply accelerated by the fan. This provides the bulk of the thrust in modern engines, while reducing fuel consumption and noise. The ratio between these two flows, known as the bypass ratio, is one of the major advances in civil aviation since the 1960s. This cutaway model allows you to visualize these two paths of air and the sequence of stages.
Why you'll love it
The art of engineering at desk scale
You only need to have seen a jet engine up close, on the tarmac or in an air museum, to remember that impression of power: a ring of blades perfectly aligned, tolerances to within a tenth of a millimeter, and behind it, a whole hidden world.
This cutaway model makes that world visible. The blades, stages, and casings reveal themselves layer by layer, and the metallic finish evokes the titanium and alloys of real engines. 3D printing, an additive manufacturing technique now used even in the aeronautics industry, adds a modern touch to the object.
Once assembled, it sits on a desk like an engineer's trophy. It naturally joins our Physics & Motion collection, where every object elegantly recounts a mechanical principle.
From box to demonstration
Comparison with other Lab models
| Criteria | Turbofan engine model | Stirling demo engine |
|---|---|---|
| Principle illustrated | Aeronautical high-bypass propulsion | Hot air engine, thermodynamic cycle |
| Source of motion | Small battery-operated electric motor | Heat (flame or heat source depending on model) |
| Actual engine operation | No: visual demonstration of rotation | Yes: the engine actually functions |
| Manufacturing | 3D printing, metallic-surface PLA | Metal parts |
| Assembly | Assembly kit | Depends on model |
| Ideal audience | Aviation enthusiasts, engineers, modelers | Those curious about physics and thermodynamics |
Good to know: PLA (polylactic acid) is a plant-based plastic widely used in 3D printing. Its "metallic" version contains pigments that imitate the look of metal, but the model is not made of solid metal: it is therefore lightweight and must be handled with care. The fine lines visible on the surface are the normal signature of layer-by-layer printing.
Tip: Take your time during assembly and work in daylight on a clear table. For an optimal presentation, position the model at a three-quarter angle, with the cutaway side facing you: the fan and internal stages will be visible at a single glance. Remove the batteries if the model will not be spun for a long time.
Technical characteristics
| Type | High-bypass jet engine model, cutaway view |
| Version | Assembly kit |
| Manufacturing | 3D printing |
| Material | Metallic-surface PLA |
| Finish | Copper and metallic silver blades and casings, silver cone |
| Base | Black |
| Approximate dimensions | Approx. 28 × 15 × 10 cm (based on photo) |
| Animation | Blade rotation via battery-operated electric motor |
| Battery type and quantity | Not disclosed |
| Batteries included | Not disclosed |
| Packaging | Black box with foam padding |
| Number of parts / manual | Not disclosed |
Precautions: This is a collector's model, not a toy. It contains small parts and batteries: keep out of reach of children under 3 years old. PLA deforms in heat: do not expose the model to direct sunlight behind glass, near a radiator, or in a car. Do not put fingers into the rotating blades and never force the thin parts during assembly.
The ideal gift for an aviation enthusiast
Private pilot, aeronautical engineer, mechanic, engineering student, airshow lover, or simply a traveler fascinated by airplanes: this model is a gift that is built and has a story to tell. It marks a retirement, a graduation, a first flight, or a birthday, and also makes a very beautiful corporate gift for the aeronautics sector.
To complete the gift, discover other items from the Atypical Workshop Lab or our Office & High-Tech selection, for a truly realistic engineer's desk.
Frequently asked questions
Does the model come assembled?
No, this is an assembly kit. The 3D printed parts are delivered in a black box, secured in foam that protects them during transport. Assembly is part of the pleasure: by mounting the base and then the different engine stages, you concretely understand how the fan, compressor, and turbine articulate. The exact number of parts and the presence of a detailed manual are not disclosed by the manufacturer. We recommend proceeding calmly on a well-lit table and never forcing the blades, which are the model's thinnest elements.
Do the blades really spin?
Yes. The model incorporates a small battery-operated electric motor that spins the blades, allowing for a vivid demonstration of how a jet engine works. This is, of course, an animation: the model produces neither thrust nor combustion; it only reproduces the rotational movement to help visualize the air's path. The battery type and quantity are not specified by the manufacturer, and their inclusion in the box is not confirmed: check the battery compartment during assembly to choose the right format. Remember to remove the batteries if not in use for an extended period.
What are the model's dimensions?
According to the measurements visible in the manufacturer's photos, the assembled model measures about 11 × 6 × 4 inches, or approximately 28 × 15 × 10 cm with its base. This is an ideal format for a desk, a bookshelf, or a collector's display case: large enough for the details of the blades and stages to be easily legible, but compact enough not to clutter a workspace. The weight is not disclosed; as the model is made of PLA, it remains lightweight. Plan for a stable location, protected from direct sunlight and heat sources.
What material is it made of?
The model is 3D printed in PLA, a plant-based plastic (polylactic acid) widely used in additive manufacturing. The version used here has a metallic surface: pigments give the blades and casings copper and silver highlights that evoke the metal of a real engine. It is therefore not solid metal, which makes the object lightweight and pleasant to handle, but more sensitive to heat and impact. Fine lines may be visible on the surface: these are the normal signature of layer-by-layer printing, not a defect.
What exactly does the model represent?
It represents a high-bypass turbofan jet engine, the type of engine that powers most airliners. The cutaway view reveals the interior: the large fan at the front, the compressor stages, the combustion zone, and the turbine, all the way to the rear exhaust nozzle. It allows you to understand the two paths of air—the core flow that passes through the heart of the engine and the bypass flow that goes around it. It is a generic and educational representation that does not reproduce a specific engine model or brand.
Is the assembly difficult?
Assembly primarily requires patience and delicacy, more than technical know-how. The parts are pre-printed and arranged in the box's foam; the main challenge is to respect the order of the stages and not to force thin elements like the blades. The manufacturer does not disclose assembly time or difficulty level. We recommend this kit for adults and teenagers accustomed to models or curious about mechanics. Work on a clear table with good lighting, and keep small parts in a bowl so as not to lose anything during assembly.
How do I maintain the model once assembled?
Once assembled, the model requires little maintenance. Dust it regularly with a soft brush or a blower, especially between the blades where dust tends to accumulate. Avoid water and household cleaners, which could dull the metallic finish. Above all, keep it away from heat: PLA can deform in direct sunlight behind glass, near a radiator, or in a car during the summer. If you do not spin the blades for several weeks, remove the batteries to avoid any risk of leakage in the compartment.
