Data from [1] General characteristics Crew: 2 Powerplant: 1 × Siemens-Halske Sh 14A 7-cyl. air-cooled radial piston engine, 120 kW (160 hp) Main rotor diameter: 12 m (39 ft 4 in) Main rotor area: 113.1 m2 (1,217 sq ft) 3-bladed autorotating Propellers: 2-bladed fixed pitch tractor propeller Performance