{"id":233358,"date":"2016-02-10T22:53:00","date_gmt":"2016-02-10T22:53:00","guid":{"rendered":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/344297main_EC91-491-6_full.jpg"},"modified":"2023-03-17T12:00:50","modified_gmt":"2023-03-17T16:00:50","slug":"grumman-x-29","status":"inherit","type":"attachment","link":"https:\/\/www.nasa.gov\/image-detail\/grumman-x-29\/","title":{"rendered":"Grumman X-29"},"author":9,"comment_status":"closed","ping_status":"closed","template":"","meta":{"nasa_hds_core_meta_l10n":"en-US","nasa_hds_core_meta_article_editor":"","nasa_hds_core_meta_article_contacts":[],"nasa_hds_core_meta_article_topic":"","nasa_hds_core_meta_linked_locations":[],"nasa_hds_core_meta_article_related_articles":[],"hds_migrate_meta_pr_release_id":"","hds_migrate_meta_pr_release_type":"","nasa_hds_core_meta_location_x":"","nasa_hds_core_meta_location_y":"","nasa_hds_core_meta_gallery_images":[],"nasa_hds_core_meta_video_cc_file_id":"","nasa_hds_core_meta_audio_cc_file_id":""},"media-tags":[10822],"read_time":1,"video_cc_url":"","audio_cc_url":"","credits":"","original_date":{"stamp":0,"display":""},"description":{"rendered":"<p class=\"attachment\"><a href='https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/344297main_EC91-491-6_full.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"238\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/344297main_EC91-491-6_full.jpg?w=300\" class=\"attachment-medium size-medium\" alt=\"Smoke generators in the nose of the X-29 were used to help researchers see the behavior of the air flowing over the aircraft.\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/344297main_EC91-491-6_full.jpg 1041w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/344297main_EC91-491-6_full.jpg?resize=300,238 300w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/344297main_EC91-491-6_full.jpg?resize=768,609 768w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/344297main_EC91-491-6_full.jpg?resize=1024,812 1024w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/344297main_EC91-491-6_full.jpg?resize=400,317 400w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/344297main_EC91-491-6_full.jpg?resize=600,476 600w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/344297main_EC91-491-6_full.jpg?resize=900,713 900w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>Grumman manufactured two airframes. They flew a total of 437 flights between 1984-1992. In a joint program involving the Defense Advanced Research Projects Agency, the Air Force, NASA, Grumman, and other contractors, this single-engine, jet-powered aircraft investigated the use of advanced composite materials, a forward-swept wing with a thin supercritical airfoil, a variable- incidence canard, a computerized fly-by-wire flight control system to overcome the aircraft’s inherent instability, behavior at high angles of attack, and a vortex flow-control system (among other technologies). On Dec. 13, 1985, the X-29 became the first forward-swept-wing airplane in the world to exceed Mach 1 in level flight, and flight results showed that a highly unstable aircraft with forward-swept wings could be flown safely with excellent maneuverability and high G-loads. It could also be flown with good control response up to about 40\u00b0 angle of attack. The flight research also added to engineers’ understanding of advanced composites, used increasingly in aircraft construction, and of digital flight-control systems.<\/p>\n<p><a href=\"\/centers\/armstrong\/news\/FactSheets\/FS-008-DFRC.html\">Fact Sheet<\/a>  |  <a href=\"\/centers\/armstrong\/multimedia\/imagegallery\/X-29\/index.html\">Photos<\/a><\/p>\n"},"caption":{"rendered":"<p>Grumman manufactured two airframes. They flew a total of 437 flights between 1984-1992. On Dec. 13, 1985, the X-29 became the first forward-swept-wing airplane in the world to exceed Mach 1 in level flight.<\/p>\n"},"alt_text":"Smoke generators in the nose of the X-29 were used to help researchers see the behavior of the air flowing over the aircraft.","media_type":"image","mime_type":"image\/jpeg","media_details":{"width":1041,"height":825,"file":"2023\/03\/344297main_EC91-491-6_full.jpg","filesize":97137,"sizes":{"thumbnail":{"file":"344297main_EC91-491-6_full.jpg?resize=150,150","width":150,"height":150,"filesize":97137,"mime_type":"image\/jpeg","source_url":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/344297main_EC91-491-6_full.jpg?w=150&h=150&crop=1"},"medium":{"file":"344297main_EC91-491-6_full.jpg?resize=300,238","width":300,"height":238,"filesize":97137,"mime_type":"image\/jpeg","source_url":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/344297main_EC91-491-6_full.jpg?w=300"},"medium_large":{"file":"344297main_EC91-491-6_full.jpg?resize=768,609","width":768,"height":609,"filesize":97137,"mime_type":"image\/jpeg","source_url":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/344297main_EC91-491-6_full.jpg?w=1024"},"large":{"file":"344297main_EC91-491-6_full.jpg?resize=1024,812","width":1024,"height":812,"filesize":97137,"mime_type":"image\/jpeg","source_url":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/344297main_EC91-491-6_full.jpg?w=1024"},"thumbnail-sm":{"file":"344297main_EC91-491-6_full.jpg?resize=50,50","width":50,"height":50,"filesize":97137,"mime_type":"image\/jpeg","source_url":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/344297main_EC91-491-6_full.jpg?w=50&h=50&crop=1"},"thumbnail-md":{"file":"344297main_EC91-491-6_full.jpg?resize=100,100","width":100,"height":100,"filesize":97137,"mime_type":"image\/jpeg","source_url":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/344297main_EC91-491-6_full.jpg?w=100&h=100&crop=1"},"thumbnail-lg":{"file":"344297main_EC91-491-6_full.jpg?resize=200,200","width":200,"height":200,"filesize":97137,"mime_type":"image\/jpeg","source_url":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/344297main_EC91-491-6_full.jpg?w=200&h=200&crop=1"},"card-xsm":{"file":"344297main_EC91-491-6_full.jpg?resize=400,317","width":400,"height":317,"filesize":97137,"mime_type":"image\/jpeg","source_url":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/344297main_EC91-491-6_full.jpg?w=400"},"card-sm":{"file":"344297main_EC91-491-6_full.jpg?resize=600,476","width":600,"height":476,"filesize":97137,"mime_type":"image\/jpeg","source_url":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/344297main_EC91-491-6_full.jpg?w=600"},"card-md":{"file":"344297main_EC91-491-6_full.jpg?resize=900,713","width":900,"height":713,"filesize":97137,"mime_type":"image\/jpeg","source_url":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/344297main_EC91-491-6_full.jpg?w=900"},"full":{"file":"344297main_EC91-491-6_full.jpg","width":1024,"height":812,"mime_type":"image\/jpeg","source_url":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/344297main_EC91-491-6_full.jpg"}},"image_meta":{"aperture":"0","credit":"","camera":"","caption":"","created_timestamp":"0","copyright":"","focal_length":"0","iso":"0","shutter_speed":"0","title":"","orientation":"0","keywords":[]},"credits":"","original_date":{"stamp":0,"display":""}},"post":null,"source_url":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/03\/344297main_EC91-491-6_full.jpg","_links":{"self":[{"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/media\/233358"}],"collection":[{"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/media"}],"about":[{"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/types\/attachment"}],"author":[{"embeddable":true,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/users\/9"}],"wp:term":[{"taxonomy":"media-tags","embeddable":true,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/media-tags?post=233358"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}