What’s the HAPS, Guys? Airbus and Williams Advanced Engineering, two heavy hitters with the world’s largest commercial airliner and the world’s fastest formula electric cars, are collaborating on making a light, slow airplane stay up indefinitely. Their memorandum of understanding (MOU) seeks to integrate Williams’ demonstrated abilities with “ultra-lightweight materials, battery technologies and electrical cell chemistries… in… Airbus’ Zephyr High Altitude Pseudo-Satellite (HAPS) program.” Airbus Defense and Space has worked with Sion Power Corporation since 2015 to use Sion’s proprietary lithium-Sulfur (Li-S) batteries for use in Airbus’ Zephyr aircraft. The current Zephyr S is the latest iteration of a series of solar-powered, unmanned aerial systems (UAS) that will fly at 65,000 feet for months at a time. High Over Dubai Airbus and Sion have expanded the Zephyr S’ performance envelope to accomplish a 336-hour flight in 2010, and a climb to 61,696 ft (18,805 meter) over the United Arab Emirates in 2014. Airbus compares the ability of Zephyr to that …