loft not smooth, how to adjust surface?

[mossnd]

I am modeling in 'solid' a fuselage for airplane.

im using sketches for cross sections/ profiles, and also a couple of guide rails.

between most of the profiles, im getting areas of 'sink' on the surface (concave type appearance)

can anyone suggest what im doing wrong, or another approach. or can change the surface from here using the 'surface' functions??

[davebYYPCU]

Argh, when it came to cut the windows, had to introduce 3 rails to make it behave.

Might help.....

[mossnd]

Thanks Dave im currently looking over what you have done in the time line and trying to change my approach to modeling this in my head.

Your loft looks good.

There are criteria i need to keep for the final design for the reasons relating to good flying qualities at this size of RC model, so as you have already noticed some areas of my sketches dont match the Canvases

[davebYYPCU]

Just updated the last post with latest file, with top side wing fillet.

So no washout. and your dihedral as it is?

[mossnd]

Dihedral is around 2dgr p/side.

no wash out this stage, if any i might add in 0.5dgr over the last third of the wing half.

so the chord line of the airfoil (from leading edge to trailing edge) will rotate, tailing egde up. pivot point will be the 

leading edge.

very wing tip will will be rotated, and it can just loft into the wing rib thats 104.17mm

Im having a lot of troubles with going back through my sketches, and trying to get fuison to delete some constraints.

im also learning that purple dots dont follow the orignal sketch if it moves. there doesnt seem to be a link or association for that relationship that updates the second sketch, if the first sketch is changed. The Purple dot just

holds it's place in thin air and stays.

Im not used to this, finding it frustrating to go back through and re work subsequent sketches to get them to conform to previous sketches.😠

[davebYYPCU · Accepted solution]

Projections not updating - I found some of that, most comes from the "Fixed" end points, changing the purple to green, that may be an intended outcome - don't know, as I don't often go as far as fixing all my splines.  When they turn yellow, they are trying to update, but if the original line was deleted and replaced, that is the major contributor, you edit as much as you can and not delete. 

Ended up using 5 formers as rails to fix the concaving....

Might help.....

[mossnd]

This is how it ended up.

Big thanks to everyone, in particular Dave B.

you guys have given me lots to think about over the last week or so, and im now able to approach the tasks better with base knowledge you have taught me.

I have 3d model, im now 3d printing.