ft-scout-landing-gear-support.scad

   1 infty = 100;
   2 eps = 0.01;
   3
   4 fuse_w = 40;
   5 gear_w = fuse_w - 16;
   6 gear_l = 25;
   7 spring_l = 6;
   8
   9 base_w = fuse_w - 10;
  10 base_l = gear_l + 3;
  11 base_h = 1;
  12 base_beam_w = spring_l + 2;
  13 rear_spring_l = 3;
  14 rear_beam_w = rear_spring_l + 3;
  15
  16 hook_wall = 1.5;
  17 hook_in = 1.5;
  18
  19 module hook(w) {
  20         translate([0, w/2, base_h + hook_in/2])
  21         rotate([90, 90, 0])
  22         difference() {
  23                 hull() {
  24                         cylinder(r = hook_in/2 + hook_wall/2, h = w, $fn = 6);
  25                         translate([hook_in/2, 0, 0])
  26                                 cube([eps, hook_in/2 + hook_wall, w]);
  27                 }
  28                 translate([0, 0, -eps])
  29                         cylinder(r = hook_in/2, h = w + 2*eps, $fn = 6);
  30                 translate([-infty/2, -infty, -infty/2]) cube(infty);
  31                 translate([hook_in/2 + eps,, -infty/2, -infty/2]) cube(infty);
  32         }
  33 }
  34
  35
  36
  37 // wide beam
  38 translate([0, -base_w/2, 0])
  39         cube([base_beam_w, base_w, base_h]);
  40 // long center beam
  41 translate([0, -rear_beam_w/2, 0])
  42         cube([base_l, rear_beam_w, base_h]);
  43
  44 // rear hook
  45 translate([gear_l, 0, 0])
  46         hook(rear_spring_l);
  47 // rear front hook
  48 translate([gear_l - hook_in/2, 0, 0])
  49         rotate([0, 0, 180])
  50         hook(rear_spring_l);
  51
  52 // side hooks
  53 for (y = [-1, 1]) scale([1, y, 1])
  54         translate([1, gear_w/2, 0])
  55         rotate([0, 0, 70])
  56                 translate([0, -spring_l/2, 0])
  57                 hook(spring_l);