RTV 31 Hovertrain
The 1960s and 70s were an era of grand projects from landing on the moon to Concorde and passenger hovercraft. It was a golden age of engineering when anything seemed possible, even if projects were over budget, technically ambitious and late to deliver. Long-time readers of GNC will remember I covered France's Aérotrain, a high-speed hovertrain using aero engines to propel