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Help with DSI

Nameorus
Nameorus Member Posts: 33 EDU
in Community Support

(Sorry for reposting this but I am hoping someone will respond this time)

I am trying to model a diverterless supersonic inlet for my jet but none of the methods I've tried worked. Here is what I have so far:

image.png

https://cad.onshape.com/documents/f72f799a2da4da5c3cf262a5/w/97a06faddac07852c31c6b60/e/1dc5920af3148c412ce707fc?renderMode=0&tangentEdgeStyle=2&uiState=6aa040970fc525fd1a99fcf6

Here is what I want it to look like:

image.png image.png

Answers

  • martin_kopplow
    martin_kopplow Member Posts: 1,616 PRO
    edited September 11

    If nobody answered, it is possibly just because the solution is

    a) so complicated it takes a loooong time to come up with one.

    b) so simple that nothing can be said about it.

    c) unclear because nobody understood the question.

    I think it is c) with a bit of

    d) you just need to proceed on the learning curve, and nobody can actually do that for you.

    That's just the bumpy road these things go. In my answer to your previous problem, I wrote you should first identify the features that REALLY define your shape. Find corners, edges, surfaces and define them as curves you can base your surfaces upon. Slapping volumes together, or boolean-subtract them, might be tempting and offer early success, but won't work in the long run. Inner shapes are equally important as outer shapes, and you'll need to create them equally precise. It is also tempting to let yourself be led by the geometry already existing and by the tools you already know. But that takes away your intention and replaces it by the most obvious solutions. That is "Designed by Feasibility", then. Not by you.

    You might want to work through the suface modeling courses in the learning center, to get on top of that.

  • John_P_Desilets
    John_P_Desilets Onshape Employees, csevp Posts: 281 image

    @Nameorus Not sure if this is what you are going for but it has some surfacing workflows that you can investigate and use moving forward. I agree with martin 100% that the best way to get better is to practice and go through the training material. Please post updates on your design as you move forward. Good luck!

    https://cad.onshape.com/documents/b23acf8bdf0eeee5676aa251/w/7b4aeecbc73bbd861e79ecc0/e/4fac17cc3a228bc882390275

    image.png image.png

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