Twin edf SU-27

[Flitedesign 3d]

So do you first model the outer shape as surface model , and then the internal structure?

The two main options are either first make a surface model and thicken it into 3d solid or make a 3d solid and hollow it out. I feel like it is more a personal preference which one to favor. I use both, the latter one more often perhaps. Hollowing out a lofted solid has the advantage that the ends of the loft are actually planar. So the workflow might look something like: make two profile sketches using splines or arcs -> loft a solid between them -> hollow it out -> using the same profiles extrude out formers/bulkheads -> offset their outer surface inwards by the thickness of the foam. There are many ways to do it and trial and error is the best way to find ones own method

 

[Karthik1130]

The two main options are either first make a surface model and thicken it into 3d solid or make a 3d solid and hollow it out. I feel like it is more a personal preference which one to favor. I use both, the latter one more often perhaps. Hollowing out a lofted solid has the advantage that the ends of the loft are actually planar. So the workflow might look something like: make two profile sketches using splines or arcs -> loft a solid between them -> hollow it out -> using the same profiles extrude out formers/bulkheads -> offset their outer surface inwards by the thickness of the foam. There are many ways to do it and trial and error is the best way to find ones own method

1. How do you comeup with various internal structures design? what specific process do you carryout?it would be really helpful if you could share.
2. How do you CAD model these nose cones? it has lot of intricate bevel-cuts inside.
3. What CAD program do you use?
4. How to know the bendradius, k-factor, bendallowance for applying to the foamboard parts?

 

[Karthik1130]

1. How do you comeup with various internal structures design? what specific process do you carryout?it would be really helpful if you could share.
2. How do you CAD model these nose cones? it has lot of intricate bevel-cuts inside.
3. What CAD program do you use?
4. How to know the bendradius, k-factor, bendallowance for applying to the foamboard parts?

@Flitedesign 3d could you reply to the above question, and also can this Su-27 be built with 7.25mm thickness foamboard?Could you share some tips to a beginner on how to learn designing foamboard airplanes?