PDA

View Full Version : Operation Sailfish and more weird science


HELModels
Oct 10, 2004, 01:07 PM
Thanks to Xfoil, I've been looking at these cool vector diagrams and decided to animate them. Please feel free to comment.

CPV60079B.gif (http://lister3.home.mindspring.com/CPV60079B.gif)

dayhead
Oct 10, 2004, 01:39 PM
Excellent! What airfoil is it?

HELModels
Oct 10, 2004, 03:07 PM
The airfoil is my own creation. I used Xfoil to tweak an RAF something or other and this foil is the result. HL60079 is what I call it - 6 % camber and 7.9% thickness. I'm not sure exactly what kind of plane it is best suited.
I tried it on a 32 inch span and when pilot error didnt interfere, it penetrated some good winds and also had remarkable glide. I'm guessing a sailplane might be the best use of it.

HELModels
Oct 13, 2004, 04:41 PM
I am wondering if there is a way to translate these vector plots into a neat looking colorized diagram - I'd try it manually. Point would be to make an animated and the colors would change as the vector strengths changed. That is if there is a connection b/w these plots and the flow aruond the foil.

Is there enough info in these vector plots to try this?
What info is required to represent the flow?

What I imagine is an animated view with swirling colors.

HELModels
Oct 14, 2004, 12:15 AM
I realize that the swirling flow is asking too much, but using a program called Viziflow, I was able to put together something.

Heres the link: flow.gif (http://lister3.home.mindspring.com/flow.gif)

This is a model too.

Mike James
Oct 20, 2004, 10:21 PM
Not precisely what you want, but it's "real time".

If you run the "X-Plane" flight simulator, (PC or Mac) it will show you lift vectors over the whole plane, as you fly. Handy for getting a feel for what's going on.

About two years ago, I did some playing around with a Boeing "Bird of Prey" model I created, and got the results in the image here.

HELModels
Oct 21, 2004, 01:53 AM
flight simulators are another distraction I cant afford, but I appreciate what your saying. To do what I wanted would require alot more computin power.
I was thinking maybe use a program to get pressure "measurements" and then put together a Isobar map, but that would take a looong time and is just more folly.