In-flight break-up of high-altitude pseudo-satellite UAS

An Airbus Zephyr high-altitude UAS broke up in-flight after encountering unstable atmospheric conditions which resulted in a series of uncommanded rolls and an uncontrolled spiral descent over remote northern Western Australia, a new ATSB report details. The Zephyr unmanned aerial system (UAS), designed as an ultra-light high-altitude pseudosatellite, had launched from Wyndham Airport on 28 [...]