Tags: Aircraft.
The Lilienthal Normalsegelapparat ( German: Normal soaring apparatus) is a glider designed by Otto Lilienthal in Germany in the late 19th century. It is considered to be the first aeroplane to be serially produced examples being made between 1893 and 1896.Nine examples are known to have been sold the buyers including Nikolai Zhukovsky and William Randolph Hearst.
