Solar-electric High-Altitude Long-Endurance (HALE) aircraft are uniquely equipped to fill some of the major lapses in our current understanding of rapid and irreversible climate change. ICAT researchers are identifying missions of interest and the technical limits of this class of aircraft using computational design optimization. To inform the mathematical models used here, ICAT has built and experimentally tested a variety of key subsystems, including batteries, solar cells, and ultra-lightweight wing structures. Check out the related publication, An Optimization Approach to Mapping the Feasible Mission Space of a High-Altitude Long-Endurance Solar Aircraft.