One OPM maneuver block. dv_km_s is the {x, y, z} delta-v in the maneuver reference frame.
dv_km_s
{x, y, z}
@type t() :: %Sidereon.CCSDS.OPM.Maneuver{ comments: [String.t()], delta_mass_kg: float(), duration_s: float(), dv_km_s: Sidereon.CCSDS.OPM.vec3(), epoch_ignition: String.t(), ref_frame: String.t() }