[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fr-mAX0EKTrlIuNM67dVeSWwP5f3z-LnPg1ZWo_C3vyQ":3},{"slug":4,"manufacturer":5,"model":6,"category":7,"isCurated":8,"imageUrl":9,"attribution":10,"specifications":11,"descriptionEn":20,"seoTitleEn":21,"seoDescriptionEn":22},"lockheed-d-21","Lockheed","D-21","Military",false,"https:\u002F\u002Fkmghuekgzyfrnbanbsra.supabase.co\u002Fstorage\u002Fv1\u002Fobject\u002Fpublic\u002Faircraft-images\u002FLockheed_D_21_52f1ec78.webp?","Wikimedia Commons",{"roleText":12,"nationalOrigin":13,"crew":14,"engineCount":15,"firstFlightYear":16,"lengthM":17,"wingspanM":18,"maxSpeedKmh":19,"rangeKm":14},"High-altitude and high speed reconnaissance drone","United States",null,1,1964,13.1,5.8,4104,"The Lockheed D-21, which first flew in 1964, was an unmanned reconnaissance drone achieving extraordinary 4,104 km\u002Fh speed for high-altitude intelligence gathering. Its 13.1-meter length, 5.8-meter wingspan, and single-engine design reflected cutting-edge autonomous aircraft technology.","Lockheed D-21 — Hypersonic Reconnaissance Drone","D-21 (1964): 4,104 km\u002Fh unmanned reconnaissance drone with 13.1 m length."]