Importing Wing Sect Pics for Sketching

[tdekon]

I am a Pro/E newbie working on drawing an existing race car wing for analysis in CFD. I havea pdf file picture (no geometry) of the profile that I want to import into a sketch and then sketch over it. Any suggestions of how to go about this?


Thanks,


Terry

 

[design-engine]

I suggest placing it into your model using Pro/ENGINEER ISDX.... scale it appropriately then build your geometry from that as you would build any arrow dynamic geometry.

 

[tdekon]

Bart,


Sorry, but I only made it through most of the Tickoo Wildfire 4.0 for Designers book and do not know what ISDX is (well, I looked it up, but still don't really know). I just want to put the scanned drawing(now in .jpg format) in a sketch with my rough wing profile overlayed (from a spline) and tweak the spline to match the .jpg. I know this can be done in CATIA V5 and was hoping to be able to do it in Pro/E.


BTW, I saw some of your YouTube dyno pulls and thinkour race car may be able to top your power output by a little.

Thanks again,


Terry

 

[jsantangelo]

If you don't have ISDX (like me) you can use this method to get you started.

http://santangelo-eng.com/proe_tuts/trace_sketch.swf

It's not clear in the video but the fill surface I made has the same dimension ratio as the image I used. I.E. the image was 960 x 500 pixels and the sketch was 96 x 50.


Edited by: jsantangelo

 

[tdekon]

James,


That worked and I now have the picture in Pro/E and have sketched the wing profile over it. Thank you very much.

Terry

 

[tobbo]

BTW, I saw some of your YouTube dyno pulls and thinkour race car may be able to top your power output by a little.

sounds cool!! post some info and pics!!

//Tobias

 

[tdekon]

Tobias,


Not sure I should be posting this here, but you asked:


Here's a weak one: 1500hp on 17psi boost with a turbocharged Dodge R5P7 NASCAR Cup engine. We ran 307 mph top speed on a hurt motor and were on track to run 317 mph. http://www.youtube.com/watch?v=o-T1CIx7uWM


The faster car I work on with makes too much to dyno. http://www.youtube.com/watch?v=0bgzYcvKCOo

 

[bimbo666]

Hi tdekon,


Looks like you're facing a very easy problem to AutoCad, instead of Proe, to me is much easy to handle the picture as a raster image inside autocad, cause you can rotate, scale, etc, then trace the spline, and at last insert the curves you have to ProE, to build the surfaces you need to CFD.


Personally this is not a job to ISDX, cause you need the best curve fitting, the right scale and rotating, when I use ISDX is when I trace a hand sketch, where I don't need a best curve fitting just an aproximation


Regards


Pablo

 

[design-engine]

you can use a utility online that will generate a precise wing cross sections. Those points can be used to generate a wing cross section at the desired location from the fuselage.Generate the required cross section of points... on a DTM sketch the spline .... wa-la the cross sections of the wing.

4-digit NACA airfoil generator .... The point generator utility will take into account various items such as leading edge and trailing edge, Dihedral Angle, angle of incidence .

http://en.wikipedia.org/wiki/NACA_airfoil < All based on NACA information from before 1950 by the way.
Edited by: design-engine

 

[Mithrandir]

Here is a data base of airfoils... maybe the ones you need are here.....


http://www.ae.uiuc.edu/m-selig/ads/coord_database.html


I am sure there are other data bases online if the airfoils aren't proprietary.


NACA sections are SOOOOO 20th century!! lol not frequently used these days if max performance is the goal.....


if is it possible to get X,Y,Z data points for the airfoils, then you can import this X,Y,Z data in a IBL file.....this file is a text file with the following format.....


ClosedIndexArclength


Begin section ! 1
Begin curve ! 1


118.0000000.0250000.000000
112.1000001.1003850.000000
106.2000002.8075320.000000
100.3000004.8467250.000000



you can scale the airfoil sections on the fly in the curve creation.....


the file must have an extension ".ibl" but can simply be copied and pasted into a simple text file and change the extension in windows explorer.


If you can't get X,Y,Z data, it just sucks!


email me at mike.stroup@uav.com


as long as you don't work for northrup, I can prolly help!!!





lol