Dear Experts,
Could you please help me to create the below mentioned areofoil profile? I am new to the " Trajpar"( didn't understand the logic)...
I could able to generate to generate leading edge bumps but failed to create the diminishing geometry at trailing edge(by varying chord).
Please share some advice on this!
Note:-
1. "A" is a variable parameter ( example: @ 10% of chord, @ 40% of chord,@ 70% of chord,@ 100% of chord)
Thanks,
Hari
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"Share your knowledge. It is a way to achieve immortality.” - Dalai Lama.
Have a look at this file: Creo 2.0 parametric commercial version
This is very straight forward to show the Trajpar function in the Sweep feature.
Dear Sir,
Thank you Very much for your guidance...
Could you please guide me on following points?
- Can we do the pattern of “humpback” profile through the leading curve and trailing edge?
- Can we change the sweep length according to “Graph”( ex. 15% chord,40 % chord etc..)
- My intent is to remove the material from aerofoil as per humpback profile and make it sold.
If you have some free time kindly guide me …
Please find the attached CAD model for your information..
Regards,
Hari
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"Share your knowledge. It is a way to achieve immortality.” - Dalai Lama
I will attempt to help - by an example model based on what you submitted (Creo 2.0, M230):
I am sure there are other, most likely better ways of doing this, but please open the file and try to follow along with my "method":
If you want to pattern the "bulge stripes" along the wing, your sweep trajectories have to follow the boundary blend that describes the underlying shape. One way to do that is to use an intersect curves generated by a plane offset from the edge of the wing. In the pattern instances, that offset distance will vary.
Also, I make use of sweep guide "chains" that carry with them the tangency information.
I am not sure actually what you want to do with the "WAVE" graph, but I put into the sweep a variance based on a graph. In my opinion, using the cosine function makes it rather convoluted how the amplitude of the "bulge" varies; still it illustrates how it bulges more at the leading edge, then disappears, then another bump as the bulge makes its way towards the trailing edge.
Like I said - this example is for illustration, and it needs a lot more work. For example, you will notice that the bulge stripes are matched at the seams, but not all the way from the leading/trailing edges of the wing! Perhaps that could be solved by having the sweep do a nearly "full loop", then trimming and re-attaching a relatively simple trailing edge... Anyway, this is a fun exercise, I'll spend a bit more time with it on the weekend and I wish you good luck!
Respected Sir,
My intention for using the Graph option ( not sure will it help ) is to control the "chord length "( leading edge to trailing surface blending disappearing plane) in future with different values ( 70% , 40% , 15% etc...) by using program (by adding a parameter(" chord percentage")....
i.e, I would like to automate or regenerate the model( bulge stripes) with different chord length( 70% , 40% , 15% etc...)
Thank you sir for spending time to guide me....
Best Regards,
Hari
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"Share your knowledge. It is a way to achieve immortality.” - Dalai Lama
