Air Plane Design Workbench - discussion thread

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adrianinsaval
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Re: Air Plane Design Workbench - discussion thread

Post by adrianinsaval »

a179308 wrote: Sun Oct 20, 2019 8:55 am
pl7i92LCNC wrote: Sat Oct 12, 2019 12:55 pm will it take NACA profiles
as the Python addon for Linuxcnc XYUV Gcode does
http://wiki.linuxcnc.org/cgi-bin/wiki.p ... _EDM_Style
Image
Hello,
thanks for you suggestion. I integrate a NACA 4 and 5 digits in the workbench.
Capture d’écran 2019-10-20 à 10.41.37.png

After creation you can change the NACA profil/Number of points and choord or switch to a DAT file.


Capture d’écran 2019-10-20 à 10.42.06.png

The result

Capture d’écran 2019-10-20 à 10.41.50.png



Enjoy.

Frédéric
Great! Thanks!
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pl7i92LCNC
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Re: Air Plane Design Workbench - discussion thread

Post by pl7i92LCNC »

wonderfull work
now hotwire Foam cutter
profile XY UV shoudt be considert to bring a good gcode to the mashine from the WB not over path
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miniellipse
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Re: Air Plane Design Workbench - discussion thread

Post by miniellipse »

Fred,

Thank you. I tried playing around with your WB. Can you or someone show which WB or tool to make holes in the ribs and give them thickness so I can 3D print them. I tried to use the part design work bench and sketch but Freecad didn’t like that because there was no body container. I think I am mixing work benches so a step by step instruction would be nice.
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Re: Air Plane Design Workbench - discussion thread

Post by a179308 »

miniellipse wrote: Sat Oct 26, 2019 5:51 pm Fred,

Thank you. I tried playing around with your WB. Can you or someone show which WB or tool to make holes in the ribs and give them thickness so I can 3D print them. I tried to use the part design work bench and sketch but Freecad didn’t like that because there was no body container. I think I am mixing work benches so a step by step instruction would be nice.
I confirm there is a problem :D , until I find a solution here are two workarounds :
two ways to resolve your problem :
-after the rib creation, go to draft WB
-first way : transform the rib in a sketch : a clic on
Capture d’écran 2019-10-26 à 20.55.03.png
Capture d’écran 2019-10-26 à 20.55.03.png (10.19 KiB) Viewed 3302 times
, after this operation you can extrude the rib, use the part WB etc..
-second way : downgrade the ribs: a clic on
Capture d’écran 2019-10-26 à 20.54.58.png
Capture d’écran 2019-10-26 à 20.54.58.png (6.96 KiB) Viewed 3302 times
Capture d’écran 2019-10-26 à 21.04.08.png
Capture d’écran 2019-10-26 à 21.04.08.png (41.57 KiB) Viewed 3302 times

Frédéric
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Re: Air Plane Design Workbench - discussion thread

Post by a179308 »

a179308 wrote: Sat Oct 26, 2019 7:06 pm
miniellipse wrote: Sat Oct 26, 2019 5:51 pm Fred,

Thank you. I tried playing around with your WB. Can you or someone show which WB or tool to make holes in the ribs and give them thickness so I can 3D print them. I tried to use the part design work bench and sketch but Freecad didn’t like that because there was no body container. I think I am mixing work benches so a step by step instruction would be nice.
I confirm there is a problem :D , until I find a solution here are two workarounds :
two ways to resolve your problem :
-after the rib creation, go to draft WB
-first way : transform the rib in a sketch : a clic on Capture d’écran 2019-10-26 à 20.55.03.png , after this operation you can extrude the rib, use the part WB etc..
-second way : downgrade the ribs: a clic on Capture d’écran 2019-10-26 à 20.54.58.png
Capture d’écran 2019-10-26 à 21.04.08.png


Frédéric
Some precision, there is a problem only with Part Design WB, but you can use directly the rib in the Part WB.
Capture d’écran 2019-10-26 à 21.15.12.png
Capture d’écran 2019-10-26 à 21.15.12.png (618.99 KiB) Viewed 3297 times
Frédéric
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adrianinsaval
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Re: Air Plane Design Workbench - discussion thread

Post by adrianinsaval »

In part design you can use a shapebinder inside a body
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miniellipse
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Re: Air Plane Design Workbench - discussion thread

Post by miniellipse »

Thank you for the quick replies to help me out. I will work on your instructions.


Eventually, this is what I would like to learn how to do. There is a new technique to create 3d printed airplanes and it requires really good CAD technique because the wing ribs are not at the standard angle. See here:

https://www.thingiverse.com/thing:2209989/files


Screen Shot 2019-10-26 at 11.30.50 PM.png
Screen Shot 2019-10-26 at 11.30.50 PM.png (261.15 KiB) Viewed 3248 times
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Vincent B
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Re: Air Plane Design Workbench - discussion thread

Post by Vincent B »

Nice work!
Open end could be an option to build a bspline. Could be x% of the chord.
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Re: Air Plane Design Workbench - discussion thread

Post by hammax »

… 2 BSplines in sketcher with 5 - 6 Points one on suction side and also one on pressure side gives already a solution.
https://forum.freecadweb.org/viewtopic. ... 22#p343522
Ex_Profiles.PNG
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Re: Air Plane Design Workbench - discussion thread

Post by adrianinsaval »

pl7i92LCNC wrote:
HI! I've made a Pull Request implementing the usage of BSplines, please review! Currently, there is no GUI to choose to use either BSpline or lines since I don't really know how to do that, please make one if you can.

To anyone interested, head to my branch if you wanna test.

Thanks!
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