firewall for ITA plank wing

diff --git a/ita-firewall.scad b/ita-firewall.scad
new file mode 100644 (file)
index 0000000..a30b31e
--- /dev/null
+++ b/ita-firewall.scad
@@ -0,0 +1,79 @@
+eps = 0.01;
+infty = 100;
+
+body_w = 34;
+body_h = 30;
+foam_w = 3;
+
+screw_d1 = 19;
+screw_d2 = 16;
+screw_hole = 3.5;
+base_wall = 1.5;
+
+center_hole_d = 9;
+
+insert_h = 10;
+
+motor_angle_right = 4;
+
+wall = 1;
+
+difference() {
+       translate([-body_w/2, -body_h/2, 0])
+               cube([body_w, body_h, base_wall]);
+       // center hole
+       translate([0, 0, -eps])
+               cylinder(r = center_hole_d/2, h = base_wall + 2*eps);
+       // screw_d2 screw holes
+       for (y = [-1, 1]) scale([1, y, 1])
+               translate([0, screw_d2/2, -eps]) {
+                       cylinder(r = screw_hole/2, h = base_wall + 2*eps, $fn=6);
+                       translate([0, 0, base_wall/2])
+                               cylinder(r1 = screw_hole/2,
+                                       r2 = screw_hole/2 + base_wall/2,
+                                       h = base_wall/2 + 2*eps, $fn = 6);
+               }
+       // screw_d1 screw holes
+       for (x = [-1, 1]) scale([x, 1, 1])
+               translate([screw_d1/2, 0, -eps]) {
+                       cylinder(r = screw_hole/2, h = base_wall + 2*eps, $fn=6);
+                       translate([0, 0, base_wall/2])
+                               cylinder(r1 = screw_hole/2,
+                                       r2 = screw_hole/2 + base_wall/2,
+                                       h = base_wall/2 + 2*eps, $fn = 6);
+               }
+       // cable hole
+       translate([-body_w/2+foam_w+wall, -body_h/2+foam_w+wall, -eps])
+               cube([8, 6, base_wall + 2*eps]);
+}
+
+side_ext = 0.7;
+
+difference() {
+       hull() {
+               translate([-body_w/2+foam_w, -body_h/2+foam_w, base_wall-eps])
+                       cube([body_w-2*foam_w, body_h-2*foam_w, eps]);
+               translate([-body_w/2+foam_w-side_ext*insert_h/2, -body_h/2+foam_w-side_ext*insert_h/2, insert_h + base_wall - eps])
+                       cube([body_w-2*foam_w+side_ext*insert_h, body_h-2*foam_w+side_ext*insert_h, eps]);
+       }
+       hull() {
+               translate([-body_w/2+foam_w+wall, -body_h/2+foam_w+wall, base_wall-2*eps])
+                       cube([body_w-2*foam_w-2*wall, body_h-2*foam_w-2*wall, eps]);
+               translate([-body_w/2+foam_w+wall-side_ext*insert_h/2, -body_h/2+foam_w+wall-side_ext*insert_h/2, insert_h + base_wall])
+                       cube([body_w-2*foam_w+side_ext*insert_h-2*wall, body_h-2*foam_w+side_ext*insert_h-2*wall, eps]);
+       }
+};
+
+/*
+%difference() {
+       rotate([0, motor_angle_right, 0]) difference() {
+               translate([-body_w/2+foam_w, -body_h/2+foam_w, -infty/2])
+                       cube([body_w-2*foam_w, body_h-foam_w,
+                               insert_h+base_wall+infty/2]);
+               translate([-body_w/2+foam_w+wall, -body_h/2+foam_w+wall, -infty/2])
+                       cube([body_w-2*foam_w-2*wall, body_h-foam_w-2*wall,
+                               insert_h+base_wall+infty/2+2*eps]);
+       }
+       translate([-infty/2, -infty/2, -infty+eps]) cube(infty);
+}
+*/