1937  Rieseler was not dismayed by the crash of the R1 and immediately began work on his next helicopter, the RII. The RII was a two seat helicopter powered by a pair of coupled Sh 14a engines. The twin engines were envisioned to ensure sufficient power to land safely on one engine. The initial test flights done by Mohn were satisfactory, however on a later flight on December 18th, 1937, the connecting bolts and pylons between the fuselage and rotor head gave out and the RII crashed. Though slightly injured in the crash this was to be Mohn's last helicopter flight. He decided that two crashes were enough helicopter flying for him. |
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