Multipurpose helicopter with two counter-rotating rotors.
This simple but robust aircraft was developed by the Soviet helicopter designer Nikolai Il’yich Kamov (1902–1973). The Ka-26 was conceived as a rotary-wing counterpart to the Antonov An-2 for various civil uses, mainly in agricultural applications. Upward and forward thrust came from two coaxial three-bladed rotors, which were counter-rotating to counteract torque. Two radial piston engines provided power. The area behind the fixed, two-man cockpit could be quickly refitted to accommodate a six-passenger cabin, a chemical tank with spraying equipment, geological instruments, a medevac cabin, a winch or a freight platform.
The exhibited Ka-26 was used by the GDR airline Interflug as an agricultural helicopter until 1991.