3d motion blur with VRAY? (for helicopter blades)

[Trapezium]

Yeah, a little too high I was considering the RPM of a helicopter engine at around 3000 RPM. The blade would be more like 500 RPM which is still 15+ rotations per frame.

If you think about it 1/2 a revolution per frame would be 15 RPM which is more like an amusement park ride.

--Jon

[CCS]

Jon,

I think you are forgetting to convert minutes to seconds.

500rpm = 8.33rev/sec, or 3.6 frames at 30fps to make a full rev.

Or the other example of 1/2 rev per frame:
0.5 rev/frm = 15 rev/sec (@ 30fps) = 900rpm

[Trapezium]

man, I need some more sleep lately

--Jon

[trixian]

Note the "easily more"...
Anyway, disregarding any math, my point is what happens when you don't use enough geometry samples and you m-blured object reaches a rotation of 180 degrees. Same at 360.
Fake it I say.