Ir. Hugo Lambach was an aeronautical engineer and former member of the Delft Student Aeroclub. The DSA was an aeroclub of students of the Technical University in Delft. Lambach designed for the DSA a small low-wing two-seat sports plane, with designation HL-1. It flew in 1936, powered by a small 90 hp Pobjoy air-cooled radial [...]









