Hi,
Mr. Adolphe Lachassagne began in 1912/13 to built a tandem
wing airplane,called AL-1,and described as "automatically
stable",followed by a AL-2 in same concept,the AL-3,AL-5 & AL-6
were a single seat low-wing ultra-light monoplanes,but
with different engine,AL-7 was a tandem wing in new...