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Sukhoi-Gulfstream S-21

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Sukhoi-Gulfstream S-21.jpg

Sukhoi-Gulfstream S-21 was an experimental Russian-American supersonic business jet

In the early 1990s, Gulfstream Aerospace and The Sukhoi Design Bureau of Moscow began a joint effort to develop a supersonic small business jet, code named the S-21. Due to questionable market demand for commercial supersonic air travel, commitment to the project wavered and delays mounted.

Gulfstream eventually dissolved the partnership, although Sukhoi continued work on the S-21.

The S-21 would be capable of sustained cruise at Mach 2+ and much R&D has gone into the management of the troublesome sonic shockwave associated with Mach 1+ air speeds.

Specifications (S-21)

General characteristics

  • Crew: 2
  • Capacity: 6-10
  • Length: 124.2 ft (37.86 m)
  • Wingspan: 65.4 ft (19.93 m)
  • Wingsweep: 32° unswept (68° swept)
  • Height: 27.1 ft (8.26 m)
  • Empty weight: 54,167 lb (24,570 kg)
  • Useful load: 2,000 lb (907 kg)
  • Max takeoff weight: 114,200 lb (51,800 kg)
  • Fuel: 58,465 lb (26,519 kg)
  • Powerplant: 3× Aviadvigatel D-21A1 turbofan, 16,535 lbf (73.55 kN) each


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