Metal Rotors (Jul, 1948)
Metal Rotors Help Helicopter Fight Ice
All-metal rotor blades and a cabin floor hatch are novel features of a Sikorsky helicopter being tested by the Navy for use on carriers, battleships and cruisers. The blades are more easily adapted to de-icing equipment than the wooden ones now used and are less likely to be damaged. Air-sea rescues and cargo loading are simplified by the hatch. To protect deck personnel and prevent the blades from striking a rolling deck during landings on heavy seas, the tail rotor is mounted on an arm that extends upward high enough to give full head clearance. Designated the XHJS-1. the craft carries five, has a 110-mile-an-hour top speed and range of 330 miles.