Blender to Unity : Mesh Animations

Is there a way to import mesh /ipo animations to unity from blender? I do not want to go through the whole hassle of putting bones into a simple object that i want a simple animation.

Ex: In a windmill, i and the blades to move.

Is there a way to do this simply or do i have to use an armature?

For your example, export the windmill and the blades as separate models. Put them together as a prefab in Unity, and use the Animation editor to animate the blades turning.

I have the same problem. I could do what you suggest, melmonkey, but actually i >need< this way. That might sound strange.
Can anyone help?
and yeah…its urgent

Well, dig around the wiki, I think there was a set of script to support vertex animation from Blender.

Not exactly sure why you would >need< to use vertex animation, so if you would clarify that, there might be different ways to handle things all around.

Well, i promised that feature. I read these two threats:
http://forum.unity3d.com/threads/20433-Blender-animation-question-%28without-rigging%29
and
http://forum.unity3d.com/threads/62900-Blender-Animated-Meshes-to-Unity?highlight=blender+animation

Because of these i tought, that doing all animations , vertex and bone, would be possible in Blender.
And its urgent, because this solution has to be done until monday next week

This is what I was referring to:

http://www.unifycommunity.com/wiki/index.php?title=MetaMorph

Fact is, while metamorph does work for animating meshes, it will not animate a windmill for you.

Shapekeys are good at shifting between two shapes in a liquid manner. For rotational motion, you will have to either use object animation, or bone animation. Shapekeys just can’t do rotation. Each vert will move directly from the start to the end position, without any volume or spacial awareness of the other verts.

I hope that makes sense.