Wright Rotorcarft
In 1928 Dr Thomas Edward A Wright, of Wichita KS., built a tandem two-place experimental rotorcraft powered with a 150hp Hisso E. A patent was granted, but possibly it was never completed and flown. References do mention a 1929 model.
Engine: 150hp Hisso E
Wingspan: 53'6"
Seats: 2