topic Re: Wing planform complete but aerofoil adding in and solidification problem in Fusion Support Forum

Wing planform complete but aerofoil adding in and solidification problem

inaamh — Sat, 03 Feb 2024 22:03:03 GMT

The wing planform is perfectly done, so please don't change the geometry on this. Now how do I add the aerofoil cross-sections to the root and tip chords? I've spent hours getting nowhere on this!

This is the aerofoil I am adding to the root and tip chords. But how do I add the airfoils in to the root and tip chords? And how do I close the gap between the last two points of the trailing edge in this aerofoil?

And if you're done, please send me an updated and corrected fusion 360 file of the solution of the solid wing body with the same cross-sectional aerofoils at the root and tip chords.

These are my xy aerofoil coordinates for the supercritical aerofoil for the cross-sections at the tip and root chords:

1	-0.0104
0.99	-0.0071
0.98	-0.0039
0.97	-0.0009
0.95	0.0049
0.92	0.0131
0.9	0.0181
0.87	0.0251
0.85	0.0294
0.82	0.0353
0.8	0.0389
0.77	0.0439
0.75	0.0469
0.72	0.0509
0.7	0.0533
0.68	0.0555
0.65	0.0585
0.62	0.061
0.6	0.0625
0.57	0.0645
0.55	0.0656
0.53	0.0666
0.5	0.0678
0.48	0.0684
0.45	0.0692
0.43	0.0695
0.4	0.0697
0.38	0.0698
0.35	0.0696
0.33	0.0692
0.3	0.0685
0.27	0.0673
0.25	0.0664
0.22	0.0646
0.2	0.0632
0.17	0.0606
0.15	0.0585
0.12	0.0548
0.1	0.0518
0.07	0.0462
0.05	0.0411
0.04	0.0381
0.03	0.0343
0.02	0.0293
0.01	0.0219
0.005	0.0158
0.002	0.0095
0	0
0.002	-0.0093
0.005	-0.016
0.01	-0.0221
0.02	-0.0295
0.03	-0.0344
0.04	-0.0381
0.05	-0.0412
0.07	-0.0462
0.1	-0.0517
0.12	-0.0547
0.15	-0.0585
0.17	-0.0606
0.2	-0.0633
0.22	-0.0647
0.25	-0.0666
0.28	-0.068
0.3	-0.0687
0.32	-0.0692
0.35	-0.0696
0.37	-0.0696
0.4	-0.0692
0.42	-0.0688
0.45	-0.0676
0.48	-0.0657
0.5	-0.0644
0.53	-0.0614
0.55	-0.0588
0.58	-0.0543
0.6	-0.0509
0.63	-0.0451
0.65	-0.041
0.68	-0.0346
0.7	-0.0302
0.73	-0.0235
0.75	-0.0192
0.77	-0.015
0.8	-0.0093
0.83	-0.0048
0.85	-0.0024
0.87	-0.0013
0.89	-0.0008
0.92	-0.0016
0.94	-0.0035
0.95	-0.0049
0.96	-0.0066
0.97	-0.0085
0.98	-0.0109
0.99	-0.0137
1	-0.0163

Re: Wing planform complete but aerofoil adding in and solidification problem

davebYYPCU — Sun, 04 Feb 2024 06:59:03 GMT

The Airfoil File needs the Z coordinate for each point. (way too many Points)

Saved as CSV, and the Spline from CSV add-in or script, will draw the airfoil on vertical plane from the Chord line.

For model aircraft there is no such thing as critical airfoil data.

For best Fusion results you only need 4 point spline for top and bottom curves.

However, I still had your original step file, so I modified it -

I pasted your sketch into it. (you should have it fully defined for accuracy.)

Moved the airfoil plates to the sketch trailing edge/s (presumed no wash out) and Lofted the half wing.

Might help...

Re: Wing planform complete but aerofoil adding in and solidification problem

inaamh — Sun, 04 Feb 2024 05:41:27 GMT

Send me the fusion 360 file too. Please. Otherwise I wouldn’t be able to learn from this all. I’ll be able to see the dimensions, and steps taken to the solution.

Re: Wing planform complete but aerofoil adding in and solidification problem

inaamh — Sun, 04 Feb 2024 05:45:29 GMT

I didn’t want you to change my planform area, I just wanted you to add the aerofoils to the root and tip chords of the wing.

Re: Wing planform complete but aerofoil adding in and solidification problem

davebYYPCU — Sun, 04 Feb 2024 06:59:49 GMT

I have not changed anything in the sketch. (Cut and Pasted from your new file to the old one)

Something wrong with that sketch?

It was / is not fully defined.

I have only used one point in that sketch to position the tip rib.

My file was supplied. Been fixed.

Might help....

Re: Wing planform complete but aerofoil adding in and solidification problem

inaamh — Sun, 04 Feb 2024 08:53:35 GMT

These are my xy aerofoil coordinates for the supercritical aerofoil for the cross-sections at the tip and root chords:

1	-0.0104
0.99	-0.0071
0.98	-0.0039
0.97	-0.0009
0.95	0.0049
0.92	0.0131
0.9	0.0181
0.87	0.0251
0.85	0.0294
0.82	0.0353
0.8	0.0389
0.77	0.0439
0.75	0.0469
0.72	0.0509
0.7	0.0533
0.68	0.0555
0.65	0.0585
0.62	0.061
0.6	0.0625
0.57	0.0645
0.55	0.0656
0.53	0.0666
0.5	0.0678
0.48	0.0684
0.45	0.0692
0.43	0.0695
0.4	0.0697
0.38	0.0698
0.35	0.0696
0.33	0.0692
0.3	0.0685
0.27	0.0673
0.25	0.0664
0.22	0.0646
0.2	0.0632
0.17	0.0606
0.15	0.0585
0.12	0.0548
0.1	0.0518
0.07	0.0462
0.05	0.0411
0.04	0.0381
0.03	0.0343
0.02	0.0293
0.01	0.0219
0.005	0.0158
0.002	0.0095
0	0
0.002	-0.0093
0.005	-0.016
0.01	-0.0221
0.02	-0.0295
0.03	-0.0344
0.04	-0.0381
0.05	-0.0412
0.07	-0.0462
0.1	-0.0517
0.12	-0.0547
0.15	-0.0585
0.17	-0.0606
0.2	-0.0633
0.22	-0.0647
0.25	-0.0666
0.28	-0.068
0.3	-0.0687
0.32	-0.0692
0.35	-0.0696
0.37	-0.0696
0.4	-0.0692
0.42	-0.0688
0.45	-0.0676
0.48	-0.0657
0.5	-0.0644
0.53	-0.0614
0.55	-0.0588
0.58	-0.0543
0.6	-0.0509
0.63	-0.0451
0.65	-0.041
0.68	-0.0346
0.7	-0.0302
0.73	-0.0235
0.75	-0.0192
0.77	-0.015
0.8	-0.0093
0.83	-0.0048
0.85	-0.0024
0.87	-0.0013
0.89	-0.0008
0.92	-0.0016
0.94	-0.0035
0.95	-0.0049
0.96	-0.0066
0.97	-0.0085
0.98	-0.0109
0.99	-0.0137
1	-0.0163

This is the precise xy aerofoil coordinates I want in my wing cross section as this one is supercritical with a flat upper surface at the trailing edge and the curve cambered curve at the lower surface of the trailing edge, making it suitable for transonic speeds.

Not the previous one, as that one the NACA 65A004 is symmetrical, and not suited for transonic speeds (see image below).

Re: Wing planform complete but aerofoil adding in and solidification problem

inaamh — Sun, 04 Feb 2024 09:02:02 GMT

Please @davebYYPCU , I’m so close. The wing planform I recently sent you in the fusion 360 file dimensions are correct. And the only thing left is the supercritical aerofoil cross section at both the root and tip chords.

These are my xy aerofoil coordinates for the supercritical aerofoil for the cross-sections at the tip and root chords:

1	-0.0104
0.99	-0.0071
0.98	-0.0039
0.97	-0.0009
0.95	0.0049
0.92	0.0131
0.9	0.0181
0.87	0.0251
0.85	0.0294
0.82	0.0353
0.8	0.0389
0.77	0.0439
0.75	0.0469
0.72	0.0509
0.7	0.0533
0.68	0.0555
0.65	0.0585
0.62	0.061
0.6	0.0625
0.57	0.0645
0.55	0.0656
0.53	0.0666
0.5	0.0678
0.48	0.0684
0.45	0.0692
0.43	0.0695
0.4	0.0697
0.38	0.0698
0.35	0.0696
0.33	0.0692
0.3	0.0685
0.27	0.0673
0.25	0.0664
0.22	0.0646
0.2	0.0632
0.17	0.0606
0.15	0.0585
0.12	0.0548
0.1	0.0518
0.07	0.0462
0.05	0.0411
0.04	0.0381
0.03	0.0343
0.02	0.0293
0.01	0.0219
0.005	0.0158
0.002	0.0095
0	0
0.002	-0.0093
0.005	-0.016
0.01	-0.0221
0.02	-0.0295
0.03	-0.0344
0.04	-0.0381
0.05	-0.0412
0.07	-0.0462
0.1	-0.0517
0.12	-0.0547
0.15	-0.0585
0.17	-0.0606
0.2	-0.0633
0.22	-0.0647
0.25	-0.0666
0.28	-0.068
0.3	-0.0687
0.32	-0.0692
0.35	-0.0696
0.37	-0.0696
0.4	-0.0692
0.42	-0.0688
0.45	-0.0676
0.48	-0.0657
0.5	-0.0644
0.53	-0.0614
0.55	-0.0588
0.58	-0.0543
0.6	-0.0509
0.63	-0.0451
0.65	-0.041
0.68	-0.0346
0.7	-0.0302
0.73	-0.0235
0.75	-0.0192
0.77	-0.015
0.8	-0.0093
0.83	-0.0048
0.85	-0.0024
0.87	-0.0013
0.89	-0.0008
0.92	-0.0016
0.94	-0.0035
0.95	-0.0049
0.96	-0.0066
0.97	-0.0085
0.98	-0.0109
0.99	-0.0137
1	-0.0163

Not the previous one, as that one the NACA 65A004 is symmetrical, and not suited for transonic speeds (see image below).

Re: Wing planform complete but aerofoil adding in and solidification problem

inaamh — Sun, 04 Feb 2024 09:03:36 GMT

Just how do I change the aerofoil cross sections at both root and tip chords to these coordinates @davebYYPCU?

These are my xy aerofoil coordinates for the supercritical aerofoil for the cross-sections at the tip and root chords:

1	-0.0104
0.99	-0.0071
0.98	-0.0039
0.97	-0.0009
0.95	0.0049
0.92	0.0131
0.9	0.0181
0.87	0.0251
0.85	0.0294
0.82	0.0353
0.8	0.0389
0.77	0.0439
0.75	0.0469
0.72	0.0509
0.7	0.0533
0.68	0.0555
0.65	0.0585
0.62	0.061
0.6	0.0625
0.57	0.0645
0.55	0.0656
0.53	0.0666
0.5	0.0678
0.48	0.0684
0.45	0.0692
0.43	0.0695
0.4	0.0697
0.38	0.0698
0.35	0.0696
0.33	0.0692
0.3	0.0685
0.27	0.0673
0.25	0.0664
0.22	0.0646
0.2	0.0632
0.17	0.0606
0.15	0.0585
0.12	0.0548
0.1	0.0518
0.07	0.0462
0.05	0.0411
0.04	0.0381
0.03	0.0343
0.02	0.0293
0.01	0.0219
0.005	0.0158
0.002	0.0095
0	0
0.002	-0.0093
0.005	-0.016
0.01	-0.0221
0.02	-0.0295
0.03	-0.0344
0.04	-0.0381
0.05	-0.0412
0.07	-0.0462
0.1	-0.0517
0.12	-0.0547
0.15	-0.0585
0.17	-0.0606
0.2	-0.0633
0.22	-0.0647
0.25	-0.0666
0.28	-0.068
0.3	-0.0687
0.32	-0.0692
0.35	-0.0696
0.37	-0.0696
0.4	-0.0692
0.42	-0.0688
0.45	-0.0676
0.48	-0.0657
0.5	-0.0644
0.53	-0.0614
0.55	-0.0588
0.58	-0.0543
0.6	-0.0509
0.63	-0.0451
0.65	-0.041
0.68	-0.0346
0.7	-0.0302
0.73	-0.0235
0.75	-0.0192
0.77	-0.015
0.8	-0.0093
0.83	-0.0048
0.85	-0.0024
0.87	-0.0013
0.89	-0.0008
0.92	-0.0016
0.94	-0.0035
0.95	-0.0049
0.96	-0.0066
0.97	-0.0085
0.98	-0.0109
0.99	-0.0137
1	-0.0163

Re: Wing planform complete but aerofoil adding in and solidification problem

davebYYPCU — Sun, 04 Feb 2024 09:25:23 GMT

I will need the airfoil data file to add the 3rd row of numbers. Not sure but might have to be saved as txt file.

So add both to a message.

Transonic, on a model wing?

Might help....

Re: Wing planform complete but aerofoil adding in and solidification problem

inaamh — Sun, 04 Feb 2024 09:26:51 GMT

The third row, z axis is 0 for each points.

Re: Wing planform complete but aerofoil adding in and solidification problem

davebYYPCU — Sun, 04 Feb 2024 09:51:19 GMT

I know.

Fusion needs the file with 3 numbers for each point saved in a CSV file, in a spreadsheet format.

I can add the zero but I can't use a picture of the numbers.

Might help...

Re: Wing planform complete but aerofoil adding in and solidification problem

inaamh — Sun, 04 Feb 2024 09:59:45 GMT

Will this suffice (though the trailing edge isn't closed)? @davebYYPCU

Re: Wing planform complete but aerofoil adding in and solidification problem

davebYYPCU — Sun, 04 Feb 2024 19:05:06 GMT

Looks like you have the 3 set numbers, will check it out later in my day.

Might help….

Re: Wing planform complete but aerofoil adding in and solidification problem

davebYYPCU — Mon, 05 Feb 2024 02:49:02 GMT

Your CSV is ok.

Fusion can use it, and makes such a mess, that I would not be wasting time on it.

I don't have any transonic experience, you sure this airfoil is suitable?

The workflow to make your wing with this airfoil is.

Utilities > Scripts and Addins > ImportSplineCSV < Run.

Edit the sketch, join the open gap at trailing edge with a line.

New Sketch - Project the Trailing Edge Line, the Datum point and the other points as needed.

Fit Point Spline command, snap the spline to the top purple points,

Constrain and adjust the handles to have the curve match sketch 2.

Fit Point Spline command, snap the spline to the bottom purple points,

Constrain and adjust the handles to have the curve match sketch 2.

Surface > Patch . select the sketch 3 profile.

Modify > Scale > Uniform, scale the patch body to be 180mm long. (scale factor 18)

Move - Patch body - the datum point to the Leading edge point in sketch 1.

Sweep with Path and Guide Rail - Profile - select the Patch body, Path is Leading Edge line, and Rail is Trailing edge Line. Set to full Extent, and Scale.

Might help....

Re: Wing planform complete but aerofoil adding in and solidification problem

inaamh — Mon, 05 Feb 2024 14:25:03 GMT

This solution is admirable and useful. Thanks a bunch Dave. Can you send me a youtube video of how you did it? It will help me learn how to make the wing design along with the aerofoil csv coordinates at the root and tip chords of the wing. It will help me learn as well.

All the best Dave,

Inaam Hussain