Systems, methods, and apparatus for acoustic inspection of a surface are described. An example system may include an inspection robot structured to traverse an inspection surface in a direction of travel. The inspection robot may include a payload having a plurality of arms, connected to the inspection robot, to rotate around respective ones of a plurality of axes while the inspection robot traverses the inspection surface, where each of the plurality of axes is in the direction of travel. A plurality of sleds may be connected to the plurality of arms, and a plurality of inspection sensors connected to the plurality of sleds. The plurality of inspection sensors may be spaced apart from each other at adjustable positions to inspect the inspection surface at an adjustable resolution.