Helicopter project of 1951.
L.Benes "Ceskoslovenske Vrtulniky", 1998
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Technical data for HC-5
Number of seats: 4, engine: 1 x M-208 rated 177kW, rotor diameter: 10.80m, length: 9.0m, height: 3.42m, gross weight: 1265kg, empty weight: 825kg, maximum speed: 155km/h, cruising speed: 135km/h, rate of climb: 3.0m/s, absolute ceiling: 3000m, hover ceiling inside of ground effect: 900m, range: 350km