a space - fed conformal array for a high altitude airship includes a primary array lens assembly adapted for conformal mounting to a non - planar airship surface . the lens assembly includes a first set of radiator elements and a second set of radiator elements , the first set and the second set spaced apart by a spacing distance . the first set of radiators faces outwardly from the airship surface to provide a radiating aperture . the second set of radiators faces inwardly toward an inner space of the airship , for illumination by a feed array spaced from the second set of radiators .