Great article with some more background: https://newatlas.com/aircraft/dynamic-soaring-speed-record-spencer-lisenby/ https://newatlas.com/aircraft/dynamic-soar

Great article with some more background: https://newatlas.com/aircraft/dynamic-soaring-speed-record-spencer-lisenby/ https://newatlas.com/aircraft/dynamic-soaring-speed-record-s...