Concept helicopter design by Daniel Simon.
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Keywords: concept study a high-speed executive helicopter two seats plus luggage composite structure retractable front landing skid length 12.80m rotor diameter 14.60m speed 450 km/h 4-blade coaxial rotors pusher propeller design by daniel simon for DSX
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Keywords: concept study a high-speed executive helicopter two seats plus luggage composite structure retractable front landing skid length 12.80m rotor diameter 14.60m speed 450 km/h 4-blade coaxial rotors pusher propeller design by daniel simon for DSX