It was 2005 or before, that I promised my self to make a 3D Model of Project Tiger. It is the freehand sketch which had ended up in 3D as seen in the background. This is how the Project Tiger story begins. You can see several versions of it on my Concept Vehicles page. As every surface modeler knows, it could be so tough at times to maintain curvature continuity. Learning and experiencing it is another challenge, and it does not come easy for sure. That is why the sole purpose of this tutorial, following and upcoming ones are to teach and guide you through some specific Advanced Surface Modeling situations and to give you some inspiration on your projects or to excell your skills on Surface Modeling. I just want to share my humble opinion and knowledge on surface modeling to help people solve some specific occasions. Intermediate or advanced level SolidWorks knowledge is necessary for this tutorial. Second part of this book demonstrates some rendered images to show how your detailed, quality work pays off in the end. It always does! Please feel free to contact me at info@selcukozmumcu.com.

1. TUTORIAL BOOK #1
ADVANCED SURFACE MODELING SERIES
W W W . S E L C U K O Z M U M C U . C O M
How to connect Wing with Fuselage on a WWII type
fighterplane in SolidWorks.

2. It was 2005 or before, that I promised my self to make a 3D Model of Project Tiger. It is the freehand sketch which
had ended up in 3D as seen in the background. This is how the Project Tiger story begins. You can see several
versions of it on my Concept Vehicles page.
As every surface modeler knows, it could be so tough at times to maintain curvature continuity. Learning and
experiencing it is another challenge, and it does not come easy for sure.
That is why the sole purpose of this tutorial, following and upcoming ones are to teach and guide you through
some specific Advanced Surface Modeling situations and to give you some inspiration on your projects or to excell
your skills on Surface Modeling. I just want to share my humble opinion and knowledge on surface modeling to
help people solve some specific occasions.
Intermediate or advanced level SolidWorks knowledge is necessary for this tutorial.
Second part of this book demonstrates some rendered images to show how your detailed, quality work pays off in
the end. It always does!
Please feel free to contact me at info@selcukozmumcu.com.
Preface

3. Connection technique may vary depending on geometries we are dealing with.
However, this type of fuselage design is commonly used in WWII fighter planes.
In this example, we start with a custom design WWII type fighter airplane which has a
commonly used geometry of its fuselage.
I believe that this model could be useful for the ones related with aircraft modeling.

4. First, we decide where to cut (trim
surface) on the fuselage and with
which profile.
In this example, we start with a
already cut fuselage which its cut
borders are indicated with arrows.
Step 1

5. Because we cut with a sketch
composed of several curves and
lines, the cut border created on the
fuselage does not have a continued
edge along the border. So we need
to create "combined curve" in order
to use the whole edge as one
continuous edge when connecting
with other geometries.
The created combined curve is
indicated with an arrow. We just
used one half of the fuselage.
Step 2

6. Now we need guide curves in order
to have more control and precision
on the new surface to be created.
Please pay attention to "Curvature
Continuity" propagation within both
ends of the splines when connecting
surfaces.
Step 3

7. We use "Boundary Surface" tool in
surface commands. You can see
how all our guide curves, combined
curve and the edge of the wing is
used.
Step 4

8. It is time draw the bottom line curve
in side view. This curve is very
important in our following steps.
Step 5

9. Please pay attention to "Curvature
Continuity" propagation within end
points of the spline with fuselage
surfaces.
Step 6

10. Here we need another guide curve
coming from the wing to our center
line, which we called it as bottom
line curve.
This spline is essential in order to
perform Curvature Continuity
between the wing and the fuselage.
Step 7

11. We use Boundary Surface tool again
as shown below.
Connection with the blue line stays
as «Normal to Profile» and
connection with the wing as seen as
the blue surface at the top has to be
«Curvature Continuity».
Step 8

12. Here is the result of the completed
boundary surface.
Step 9

13. Now we need to trim this Boundary
Surface! Why?
We need to open a space for front
and rear part of this boundary
surface in order to be able to
connect with the wing surface at the
top.
Pay attention to trimming curves to
not to be tangent to the border edge
in the bottom view. At the following
step it will be much clear, which is
shown with arrows.
Step 10

14. You can see the remaining areas left
from the "Trim Surface" operation.
These remaining areas are vital
because we need a
tangent/curvature continuity
between the upcoming front and
rear boundary surfaces with this
bottom surface.
Step 11

15. Here comes the front surface!
Again we use Boundary Surface
tool.
Step 12

16. Now we will use "Knit Surface" tool.
Step 13

17. And comes the rear surface!
Again we use boundary surface tool.
Step 14

18. Now we have connected the wing
with the fuselage.
From now on, you can knit all
surfaces we made with the wing and
mirror it to other side.
Step 15

19. Another view from upper part of the
connecting surfaces.
Step 16

20. W W W . S E L C U K O Z M U M C U . C O M
RENDERS

28. W W W . S E L C U K O Z M U M C U . C O M