Each blade had 4 burners located at trailing edge of the tip. The airfoil section of the blade was NACA 23018.
The rotor control system was unique in that the swashplate and the three massive hydraulic actuators were mounted above the rotor head.
The XH-17 had a concentrated weight supported by a boom extending from the leading edge of each blade to avoid flutter.
Main Rotor Characteristics
Direction of Rotation:
Articulated, with flap hinges at 3.5% rotor radius
Main Rotor Blade Characteristics
Extruded aluminum tubes supported with ribs and covered with aluminum skins
Blade Tip Geometry:
Number of Blades:
Main Rotor Derived Characteristics
Main Rotor Blade Derived Characteristics
Blade area per blade:
Primary Control Device - Hughes XH-17 Flying Crane
Tail rotor came from a Sikorsky S-55 (H-19). The tail rotor was needed for directional control and to balance the effects of friction in the main- rotor bearings and rotating seals.