1973


Sikorsky S-69 XH-59





  • Sikorsky S-69 XH-59
  • Sikorsky S-69 XH-59

The ABC ( Advancing Blade Concept ) was designed to prove the viability of two counter rotating main rotors on a common axis as a means of achieving higher speeds and better agility. Its simple design eliminates the tail rotor for anti-torque and directional control with the additional advantage of eliminating noise. Rudders in the twin tail are used instead, as in a fixed-wing aircraft. The ABC has been extensively flight tested as a pure helicopter and, with auxiliary propulsion, flown at speeds in excess of 480 km/h



  Derivatives & Versions of S-69 XH-59


ModelYearHistory
X2

2008
2008 Benefiting from the XH-59 (Advancing Blade Concept) and X-49A experiences, the high-speed helicopter technology demonstrator made its first fli ...



  List of Operators of S-69 XH-59



  Global Distribution of S-69 XH-59



2s-69


Construction Numbers


C/N Built as Year History
69-001 w/o 1973 1973 US 73-21941
69-002 US 73-21942







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