During further tests it was decided to introduce considerable dihedral at the wingtips to improve stability .
The H. 231.01 which followed in May 1938 had dihedral increased over the whole wing span , and the unusual wingtip arrangement of the modified H. 230 was eliminated .
During further tests it was decided to introduce considerable dihedral at the wingtips to improve stability , but the H. 231.01 which followed in May 1938 had dihedral increased over the whole wing span , and the unusual wingtip arrangement of the modified H. 230 was eliminated .