Article explains the aerodynamics of wing twist, in particular the positive feedback dynamics, which, when controlled, can be used for roll control (which was something I didn't know). This is in relation to the recent Launch HN: Radical (YC W23) – Autonomous high-altitude solar aircraft:<p><a href="https://news.ycombinator.com/item?id=37901120">https://news.ycombinator.com/item?id=37901120</a>