Eagle Ray is an open source project of Kashmir World Foundation designing an aircraft for protecting endangered species. We have a lot of conformal hatch covers to design, hatch openings to create, and ledges to add for attaching the hatch covers. We need hatches for servos, avionics bays, and payload bays
K-power DMC811 Servo.3dm (3.4 MB)
ER_4-0_HalfScale__current_.3dm (8.3 MB)
. I would much appreciate your suggestions for the best approach. I am attaching a current CAD for Eagle Ray and an example servo frame with 2d projection of a servo cover. Four of these servos need to be installed in Eagle Ray. Servo covers are normally 1.5mm thick, placed on the underside of the wing or inside the wingtips, with a 4mm lip under around the edge to contain the threaded inserts for attaching the servo covers.
Hi Ron, so the goal is to get this rectangular shape let into the 3d curved surfaces, correct ? Some view, possibly a plan view has this shape but it is actually cut into the curved surface…?
Like so, but with fasteners?
-Pascal
Hi Pascal,
That sounds about right. The servo frame included in the file I attached ends up part of the internal structure of the wing, and the servo cover is attached to the servo frame using four M2.5 flat head screws such that it is conformal and flush with the wing. In my file the servo cover is flat, so the trick is how to cut the opening in the wing and then use the cut piece as the servo cover.
Thanks,
Ron
Hi Ron - the basic process would be to get the outer curve of the cover, make a small offset (Offset command) for clearance and then project the curves onto the target surface. Split the surface wil the curves and OffsetSrf or ExtrudeSrf (With Solid=Yes) - most likely extrude, I would think in this case - making sure the extrusion direction matches the projection direction… Then add the details - the screw locations can be projected from the flat version as well as tyhe outer curves.
-Pascal
I could use a little more guidance on how to create the lip under the hatch. The lip should be 2mm all around and 1.5mm thick. I included notes in my CAD file so you could see if I have a good process making the hatches before making the lips.
Lucas Cover Test.3dm (607.7 KB)
Hi Ronald - is this what you need -
?
-Pascal
Hi Pascal,
That looks like what I need. What magic did you do to get there?