Published: January 2021 in the proceedings of the SciTech 2021 conference of the American Institute of Aeronautics and Astronautics
Summary: Preliminary designs are presented for two high-altitude research aircraft that could be useful in pre-deployment field experiments related to stratospheric aerosol injection. One is a scaled down version of the presumed deployment jet that could carry a 1.5 ton payload to an altitude of 22 km. The other is along-dwell solar-powered airship capable of cruising for months in the lower stratosphere.