# Coaxial Rotor Helicopter (Aircraft Fleet and Airfield)

A compact coaxial rotor helicopter: two contra rotating three blade discs on one mast, no tail rotor at all, twin fins on a short boom and a wide four wheel undercarriage.. Premium CC0 aircraft and airfield game asset.

- **URL:** https://3dassets.dev/assets/aircraft-fleet-and-airfield-coaxial-helicopter-90b22ff0
- **GLB (direct, CORS *, immutable):** https://cdn.3dassets.dev/assets/32801/v1/model.glb
- **Download (counted):** https://3dassets.dev/download/aircraft-fleet-and-airfield-coaxial-helicopter-90b22ff0
- **Licence:** CC0 1.0 Universal: https://creativecommons.org/publicdomain/zero/1.0/ (no attribution required)
- **Contributor:** 3D Assets (@3dassets): https://3dassets.dev/u/3dassets
- **Category:** Vehicles
- **Tags:** Modern, Realistic, Exterior, Animated
- **Geometry:** 30,104 triangles, 62,288 vertices, 23 meshes, 10 materials, 0 textures
- **Size (m):** 10.04 × 4.261 × 13.621
- **Animations:** rotor-spin, open, close, wheel-roll
- **File size:** 0.91 MB
- **Downloads:** 2
- **AI used (contributor-reported):** yes; model: claude-opus-5

## About

A compact coaxial rotor helicopter: two contra rotating three blade discs on one mast, no tail rotor at all, twin fins on a short boom and a wide four wheel undercarriage. Dimensions 10.04 x 4.26 x 13.62 m (X x Y x Z). Origin at the footprint centre, resting on y = 0; metres, +Y up, nose toward +Z, wing span and wheel axles along X. Named pivots: wheel-main-right at (-0.33, 0.3, 0.05); wheel-front-right at (-0.33, 0.26, 2.81); wheel-main-left at (-2.83, 0.3, 0.05); wheel-front-left at (-2.83, 0.26, 2.81); door-right at (-0.6, 1.83, 1.83); door-left at (-2.56, 1.83, 1.83); rotor-lower at (-1.58, 3.16, 1.01); rotor-upper at (-1.58, 3.92, 1.01). Rigid node-transform clips rotor-spin, open, close, wheel-roll drive named nodes on their own pivots. No skinning and no skeleton, so the retraction linkage, rotor flapping and lead-lag, propeller pitch change, the swashplate and wing flex are all deliberately static. Sixteen material palette of airframe white, deep blue, warm red, airfield yellow, bare aluminium, steel grey, charcoal, near black tarmac, light grey concrete, olive and tinted glazing, plus five emissive lighting materials for navigation, strobe, taxiway, threshold and interior lights. Flat colours, no texture maps. Original generic design with no manufacturer, type designation, livery, registration or operator marking. Free 3D model for Unity, Godot, Unreal, three.js and Blender. No collision or navigation data.

## Use with three.js

```js
import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js'
import { AnimationMixer } from 'three'

let mixer

const loader = new GLTFLoader()
loader.load('https://cdn.3dassets.dev/assets/32801/v1/model.glb', (gltf) => {
  scene.add(gltf.scene)
  mixer = new AnimationMixer(gltf.scene)
  mixer.clipAction(gltf.animations[0]).play()
})

// Call from your render loop; deltaSeconds is time since the previous frame.
function updateAssetAnimation(deltaSeconds) {
  mixer?.update(deltaSeconds)
}
```

## React Three Fiber

```jsx
import { useGLTF, useAnimations } from '@react-three/drei'
import { useEffect } from 'react'

export function CoaxialRotorHelicopterAircraftFleetAndAirfield(props) {
  const { scene, animations } = useGLTF('https://cdn.3dassets.dev/assets/32801/v1/model.glb')
  const { actions, names } = useAnimations(animations, scene)
  useEffect(() => {
    const action = actions[names[0]]
    action?.reset().play()
    return () => { action?.stop() }
  }, [actions, names])
  return <primitive object={scene} {...props} />
}
useGLTF.preload('https://cdn.3dassets.dev/assets/32801/v1/model.glb')
```

## <model-viewer>

```html
<model-viewer src="https://cdn.3dassets.dev/assets/32801/v1/model.glb" alt="Coaxial Rotor Helicopter (Aircraft Fleet and Airfield)" camera-controls auto-rotate autoplay></model-viewer>
```

## Blender

```python
# Blender 4.x: File > Import > glTF 2.0, or from the Python console after downloading the file.
import bpy
bpy.ops.import_scene.gltf(filepath='model.glb')  # from https://cdn.3dassets.dev/assets/32801/v1/model.glb
# Metres and +Y up are converted to Blender's Z-up scene automatically.
# Clips arrive as actions; play them from the Dope Sheet > Action Editor.
```

## Godot

```gdscript
# Godot 4: copy model.glb into res://models/ and the editor imports it as a scene.
var packed := load("res://models/model.glb") as PackedScene
var model := packed.instantiate()
add_child(model)
var player := model.find_child("AnimationPlayer", true, false) as AnimationPlayer
player.play(player.get_animation_list()[0])
```

## Unity

```csharp
// Unity: import model.glb with glTFast (Package Manager: com.unity.cloud.gltfast) and drag the prefab in,
// or load it at runtime straight from the CDN:
using GLTFast;
var gltf = new GltfImport();
if (await gltf.Load("https://cdn.3dassets.dev/assets/32801/v1/model.glb")) await gltf.InstantiateMainSceneAsync(transform);
// Clips import as legacy AnimationClips on the root; GetComponent<Animation>().Play() starts the first.
```

---
JSON: https://3dassets.dev/api/v1/assets/aircraft-fleet-and-airfield-coaxial-helicopter-90b22ff0 · Loads with a plain GLTFLoader: no Draco/KTX2 loaders needed.