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View Full Version : Any tricks on how to do realistic Helicopter Blades?



robertoortiz
05-04-2017, 03:52 PM
Hey guys I am doing over the weekend a rendering of a helo and I would love to check one any tricks you guys might suggest.

Thanks

-R

MonroePoteet
05-04-2017, 04:29 PM
Definitly use PhotoReal motion blur. You can use a high-frequency Oscillator modifier (Graph Editor=>Modifier tab) to "wiggle" the hellicopter blade as it rotates to enhance the motion blur.

mTp

Ztreem
05-04-2017, 04:32 PM
As MonroePoteet suggested. I would also look up the most common rpm of the rotors and mimic that.

MichaelT
05-04-2017, 05:00 PM
Here is a quick thing (it's not a correct model, but it only is a one minute thing so it is what it is :) ) anyway.. should help you out I hope.

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Danner
05-05-2017, 02:21 AM
if it's not for a close up you can get away with using transparency texture on a disk. That way you can avoid using motion blur (I tend to do my motion blur in post so I avoid it in render if I can)

daforum
05-05-2017, 03:10 AM
Have a look at this thread: http://forums.newtek.com/showthread.php?133051-Help-with-Helicoptor-rotor-blades&highlight=Rotor

There's a script called 'RotorControl.lsc' that's worth checking out.

Hope it helps :-)

robertoortiz
05-05-2017, 04:46 PM
Wow guys thank you!
Michael t we decided to use your approach. We will render the blades as a separate pass.

Thanks!

tischbein3
05-06-2017, 12:48 AM
if it's not for a close up you can get away with using transparency texture on a disk. That way you can avoid using motion blur (I tend to do my motion blur in post so I avoid it in render if I can)
Actually I would defintive _combine_ your approach with the motion blur technique. Even for close up shots.
imho motion blur for itself would need a lot of passes to render correctly

MichaelT
05-06-2017, 01:23 AM
You can of course do the rotors separately but doing so will affect the composition of the scene. The helicopter will have something 'odd' about it for the viewer. It all depends on how you put things together of course. Personally I would render the whole helicopter with blur. But maybe cropping the render area out, to speed things up. That way you'll get all the environment stuff in there, as well as a coherent motionblur. But at a much cheaper rendering cost. Just a thought. Just remember to tweak the blur vales so the whole thing looks ok.

If you on the other hand is making a game, and the helicopter is viewed from (let's say) above, then yes. Do render it separately, and add it as an animated sprite on top of the helicopter. That would speed things up in the game, while maintaining the look. It would also make it cheaper if you plan on using it in a mobile game.

erikals
05-06-2017, 04:15 AM
daforum mentioned this plugin >


https://www.youtube.com/watch?v=Kx4Zj_PCiJM

erikals
05-06-2017, 04:18 AM
also see Mis' tutorial on motion blur >


https://www.youtube.com/watch?v=jxeFgzRCcyw

robertoortiz
05-14-2017, 07:28 AM
Thanks for all you help!
You ca see the finished result aftetr the 1 minute mark.

https://vimeo.com/217264523
All assets done by me.

-R