This photo shows the X-29 during a 1991 research flight. Smoke generators in the nose of the aircraft were used to help researchers see the behavior of the air flowing over the aircraft. The smoke here is demonstrating forebody vortex flow. This mission was flown September 10, 1991, by NASA research pilot Rogers Smith.
Ames-Dryden Flight Research FacilityDepartment of DefenseDefense Advanced Research Projects Agency DARPA Air Force Flight Test CenterWright LaboratoryWright Patterson Air Force BaseGrumman CorporationGeneral Electricforward-swept wingvortex flow controlcompositescanardssupercritical airfoilfly-by-wire flight control