A lot of progress on the propagator

julia/spacecraft.jl

@@ -0,0 +1,17 @@
+struct sc
+  mass::Float64
+  mass_flow_rate::Float64
+  max_thrust::Float64
+  num_thrusters::Int
+  duty_cycle::Float64
+end
+
+function sc(name::String)
+  if name == "test"
+    return sc(1000., 0.01, 0.1, 2, 1.)
+  elseif name == "no_thrust"
+    return sc(1000., 0.01, 0., 0, 0.)
+  else
+    throw(ErrorException("Bad sc name"))
+  end
+end