On Aug 28, 7:10 am, Stealth Pilot
wrote:
On Mon, 27 Aug 2007 11:14:18 -0700, mhorowit wrote:
Figure 4-42 "Streamline tube splice using round tube" - obviously they
inserted a round tube into the streamlined tube. Can anyone explain
the rest of the drawing? What's being shown in the top perspective? -
thanks, Mike

see the left hand cross section. that shows the setup.

you have a diagonal cut across the streamline tube, this allows access
into the streamline tube at that point.
there is a slot cut into the sides of the streamline tube extending
from the diagonal cut along the streamline tube in both directions for
at least 1 1/2 times the streamline tube chord. the slot has rounded
ends.

you select an appropriate length of tube and fishmouth the ends.
you need to panel beat the ends down a little so that it fits into the
streamline tube. the round tube should be a neat fit in the slot in
the streamline tube.
once you have the round tube fitting into the entire length of the
slot (by percussive persuasion, panel beating etc) you assemble the
three components together
you then weld the two steamline tubes together as indicated by the
hachure on the drawing.then you rosette weld the round tube to the
streamline tube along the edges of the slot.

personally I think they've drawn the length of the round tube a little
short. this may give welding problems that can be obviated by making
the round tube a little longer.

I hope that makes it clearer.

Stealth Pilot

Wow. Thanks for the explanation. Is there any supplimental text that
augments 43.13 i.e.gives a text description like you provided? - MikeH