Sikorsky V/STOL Aircraft
Sikorsky Aircraft Division
S-65 Compound Helicopter

S-65
At the time (1969), predicted by Sikorsky to fly by 1973 and be "the first successful intercity VTOL."
  • Power: Three engines (type?) which would power the rotor (in VTOL mode) and the two propellers (for cruise)
  • Cruise Speed: 265 mph (426 km/h)
  • Gross Weight: 63,600 lbs. (28,850 kg.)
  • Capacity: 86 seats
Top

TRAC (Telescoping Rotor Aircraft)
Rotor system in which the rotor diameter could be decreased up to 60%. TRAC system intended to be applied to any VTOL that uses rotors for lift (i.e. compound helicopter and tiltrotor). In this design, the rotors would tilt for horizontal flight and then fold into nacelles. Turbofans would take over for cruise.
  • Cruise Speed: 500 mph (740 km/h)
  • Capacity: 90 seats
  • Range: 550 miles
  • Wing span: 78
  • Length: 101
  • Height: 34
  • Maximum Take-off weight: 122,750 lbs.
  • Payload: 35,000 lbs.
Top

ABC (Advancing Blade Concept)
This concept intends to increase helicopter speeds. Can be applied to compound helicopters, but projected to be used mostly on conventional helicopters.
 Top
    Sources:
  • "Straight Up and Away" Flying Review International. May 1969: 52-53
AIAA V/STOL | Built V/STOL Concepts | Unbuilt V/STOL Concepts | V/STOL Wheel | Links