Experimental two-seater built in 1958 powered by a "cold-jet" rotor system: the 400 hp Blackburn Turbomeca Turmo 600 turbine drove a compressor which fed compressed air to blade-tip nozzles.
G.Apostolo "The Illustrated Encyclopedia of Helicopters", 1984
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Technical data for K-17
Engine: 1 x Blackburn/Turbomeca "Turmo" turboshaft, rated at 300kW, main rotor diameter: 11.28m, length: 7.01m, height: 3.35m, empty weight: 431kg, take-off weight: 907kg, max speed: 129km/h, ceiling: 1525m, range: 250km