SIKORSKY S-76

SIKORSKY S-76In 1974, the firm Sikorsky started to create on the basis of a military helicopter S-70 the first commercial passenger 12-passenger helicopter. When designing new machines, great attention was paid to the designers, its appearance and ease of use in a civilian setting. The first flight of the new machine took place in March 1977.

 

Like its predecessor, the S-76 was a four-bladed propeller, each of the blades which consisted of a hollow titanium spar, a honeycomb core and fiberglass skin. The ends of the blades had a sweep, which reduced vibration and noise and reduced bending moments. Blades mounted on the hub with elastomeric bearings, the service life of which amounted to 2 thousand hours. The tail rotor has four blades, made of composite material (CFRP). The helicopter — with four doors, chassis tricycle, retractable. The fuselage is of mixed construction of metal and composite elements.
 
Commercial operation of the S-76 began in 1979, in Addition to the civil, the firm has produced several military variants of the car.
 
SIKORSKY S-76: the diameter of the rotor 13 410 mm; empty weight 2545 kg; load capacity 1000 kg; max speed 269 km/h; static/dynamic ceiling—2560/4725 m; range, 713 km; engines — two TVD the Allison 250-C30 with a capacity of 485 kW; crew-2 persons.

Noticed mistape? Highlight it and press Ctrl+Enter, to inform us.

Recommend to read

  • SIKORSKY MH-53E SEA DRAGONSIKORSKY MH-53E SEA DRAGON
    The first flight of the new helicopter, designated V-65, was held in October 1964. This car was designed as a replacement for the aging transport helicopters amphibious S-61 in marine...
  • AGUSTA A-109AGUSTA A-109
    The oldest Italian aviation company Agusta (Gallart, Northern Italy) has been manufacturing helicopters in 1952. The first President and General Manager of the helicopter company was...

Spelling error report

The following text will be sent to our editors: