Robuta

https://marketbusinessnews.com/perlan-2-engineless-glider-breaks-record-reaching-altitude-52172ft-15-9km/166323/
An engineless glider soared to a record altitude of 52,172ft (15.9km) in the skies above the Patagonia region of Argentina. Chief pilot Jim Payne and co-pilot...
perlangliderbreaksrecordreaching
https://www.airbus.com/en/newsroom/press-releases/2018-09-airbus-perlan-mission-ii-glider-soars-to-76000-feet-to-break-own
airbusperlanmissioniiglider
https://www.sciencefocus.com/future-technology/how-it-works-perlan-2-glider
This sailplane will fly at an altitude of over 27,000m (90,000ft) to study weather patterns, climate change and the ozone.
bbc science focusworksperlanglidermagazine
https://www.popsci.com/glider-with-stellar-view/
The Perlan 2 could expand high-altitude flight, enhance climate science, and provide new insights on exploring Mars. All without burning a drop of jet fuel.
perlangliderflyfeethigher