page_title: Forward-swept wing
section_title: Return of the fast jet
hierarchical_section_title: Forward-swept wing / History / Return of the fast jet
caption_attribution_description: English: Russian Air Force, EX-88004, SAT SR-10, photographed in flight
context_page_description: A forward-swept wing is an aircraft wing configuration in which the quarter-chord line of the wing has a forward sweep. Typically, the leading edge also sweeps forward.
context_section_description: The large angles of sweep necessary for high-speed flight remained impractical for many years.
  In the late 1970s, DARPA began investigating the use of newer composite materials to avoid the problem of reduced divergence speed through aeroelastic tailoring. Fly-by-wire technology allowed for the design to be dynamically unstable and improved maneuverability. Grumman built two X-29 technology demonstrators, first flying in 1984, with forward swept wings and canards. Maneuverable at high angles of attack, the X-29 remained controllable at 67° angle of attack.
  Advances in thrust vectoring technology and a shift in air combat tactics toward medium range missile engagements decreased the relevance of a highly agile fighter aircraft.
  In 1997, Sukhoi introduced the Su-47 fighter prototype at the Paris Air Show. It had not entered production, although it underwent a series of flight tests and performed at several air shows.
  KB SAT SR-10 is a prototype Russian single-engine jet trainer aircraft, fitted with forward-swept wings. It first flew in 2015.
caption: KB SAT SR-10 trainer
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