The Heinkel He 51 was a German single-seat biplane fighter aircraft. A seaplane variant and a ground-attack version were also developed. It was a development of the earlier He 49.
Heinkel He 51
Heinkel He 51C flown by Adolf Galland in Spanish Civil War
The Heinkel He 49 was a German single-bay, single-seat biplane of mixed construction armed with two machine guns. Four variants were made, the He 49a, He 49b, He 49c and He 49d.
Heinkel He 51
…a German single-seat biplane fighter aircraft. A seaplane variant and a ground-attack version were also developed. It was a development of the earlier He 49. In 1931, Heinkel recruited the talented aircraft designers Walter and Siegfried Günter. Their first major design for Heinkel was the Heinkel He 49…