Hacker News with Generative AI: Aeronautics

Into The Tunnel: The secret life of wind tunnels (jordanwtaylor2.substack.com)
The NASA Ames low speed open wind tunnel is a cavern: A vast 120 foot wide yawning gulf, its ceiling studded with lights, it makes humans look puny & insectile. In its centre, a rotating disc holds full size aircraft or trucks. Shadow swallows the rear as the cylcopian duct disappears into a bank of colossal fans, relentlessly grasping. Up front, a huge grid shapes and straightens the air as it builds past gale force to 115 miles per hour.
Show HN: Olelo Foil - NACA Airfoil Sim (olelohonua.com)
Rotating Detonation Engine (twz.com)
A novel type of jet propulsion, a rotating detonation engine (RDE), has been successfully tested by Pratt & Whitney. The development could be highly significant for the U.S. military, with RDE technology at the center of the project called Gambit, which aims to provide a propulsion system for a mass-producible, low-cost, high-supersonic, long-range weapon for air-to-ground strike.
Air Force chief hints at existence of clandestine spy aircraft (twz.com)