Sukhoi-Gulfstream S-21 was a projected Russian-American

supersonic business jet A supersonic business jet (SSBJ) is a business jet travelling above the speed of sound: a supersonic aircraft. Some manufacturers are designing or have been designing SSBJs, but none are currently available. Usually intended to transport about t ...

. In the early 1990s,

Gulfstream Aerospace Gulfstream Aerospace Corporation is an American aircraft company and a wholly owned subsidiary of General Dynamics. Gulfstream designs, develops, manufactures, markets, and services business jet aircraft. Gulfstream has produced more than 2,000 ...

and the

Sukhoi Design Bureau The JSC Sukhoi Company (russian: ПАО «Компания „Сухой“», ) is a Russian aircraft manufacturer (formerly Soviet), headquartered in Begovoy District, Northern Administrative Okrug, Moscow, that designs both civilian and milit ...

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 weakened 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 research and development has gone into the management of the troublesome transonic effects phenomena associated with near Mach 1 air speeds. As of 2012, the project had not received any funding for the 2013-2025 development period and appeared to be cancelled.

Specifications (S-21)

References

External links

{{Supersonic transport Abandoned civil aircraft projects 2000s Russian business aircraft S-21 Supersonic business jets Trijets 2000s United States business aircraft

Specifications (S-21)

See also

References

External links