Heinkel HD 41

Imagen: Wikimedia Commons

Heinkel's HD 41 reconnaissance aircraft of 1929 delivered improved performance over earlier designs with single-engine efficiency. The two-crew layout supported pilot and observer across a 950-kilometre operational range, while 232 km/h speed provided respectable reconnaissance capability. The 11.5-metre span reflected optimisation for both endurance and combat manoeuvrability if intercepted.