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FSX how to make the belly?

F747fly

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The belly of the A350 is just a pain to model thus far:

A350_First_Flight_-_Low_pass_01_zps7e8d4f32.jpg

I don't know how this part is actually called, I'd call it the belly....

Anyhow: any ideas on a way to model that part within GMAX?
 
Lots of vertex pushing and trial&error.

There's no patented recipe for doing such an area.
 
So if I where to try just shaping it from the normal fusalage shape that might work?
 
There is a tutorial at YouTube that is like 12 parts (more or less) on making a jetliner (in either Max or Gmax). One of those parts of the tutorial is making that odd belly assembly. Search for 'tutorial, jet, jetliner, making, Max, Gmax' and I am sure you will find it at YouTube.

I recently made this on the Learjet. Its not as pronounced as this one, but has one. I forget how I did mine.

If you are making half of the fuselage (one side, then clone/mirror) that takes out part of the complications. Second, you might just take your time and study how to do it. What helps me is to make a drawing of the shape with cross section lines (grid) on a piece of paper and that helps me to 'see' in my mind how a mesh could be done to accomplish a shape.

One way I would do is is make the middle area of it with several polygons, like a belt, starting at its top side location where it begins, and loop that down under. Next, start extruding the Edges outwards to the front, then to the rear. Then start pinching the front (and later the rear) and get them to blend into the fuselage. Then cut the fuselage away where the belly will be, Attach it, then start welding Vertices together so its nice and smooth.

You might have to do it a few times to get it right. Just remember to backup your work, save up as you go so you can import/merge a new fuselage or belly part again if you need to start over, etc.
 
I think you mean this
The idea you mention sprang to mind (or perhaps a bit of a varioation to that). I simply modeled that section of the fuselage from side as if the fuselage was thicker there, then I got to the top view and started moving Vertexes, then go to the fron view and also start moving vertextes. That seems to work:

3_zps956dd009.png


Not perfect yet, but it is getting there I think
 
There are probably a billion different ways to do this, and I swear that I've tried at least 50. What I did on my Challenger (which I failed to do on the first attempt, resulting in an ugly wing root) was actually craft the section as a separate mesh from the fuselage itself. The leading edge of the wing had to "flow" into this area, so I extruded the base of the wing out and lined up those vertices in the left view to the wing root my reference image showed. Then I drew those points in close to the fuselage cylinder and added edge loops to smooth it out. You probably won't have to do this, as the wings of an A350 are more of a separate entity than a CL-605...so if I were you, I would just keep the fuselage as a basic cylinder and carefully position the vertices of a box with either NURMS or Turbosmooth applied. The edges of this can "cut" into the fuselage a bit, so you don't have to have them sitting perfectly on the surface of your fuselage.

In case that was a little confusing, here is a pretty picture:

gp5pOu8.png


Of course there was some fancy edge loop work going on here, but the main concept is quite simple. Just keep the polygon count as low as possible, and NURMS or Turbosmooth will take most of the work out of it. Building a wing root this way can eliminate smoothing issues and result in overall cleaner topology than the aforementioned technique.

Also, edges on the back of the wing had to be extruded straight up and down, then extruded again toward the tail. Sometimes you just have to micromanage a few polys for them to join up nicely, but the rest should be smooth sailing.

Good luck on your model. :)

Edit: I see you are using Gmax...The modifier you would want is "Meshsmooth", not "Turbosmooth".
 
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+1 on ozzman's suggestion.

I'd make the parts separate and then try to merge them together rather than try and stretch and bend a tube.

In the A350 it looks like you'd need 3 or 4 parts. The main fuselage, the belly, the wing (the underneath of the wing blends into the belly and the top of the wing root into the fuselage by the looks of it) and what looks like a small fillet at the back end of the wing.
 
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