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About 35th Congress of the International Council of the Aeronautical Sciences 2026 The 35th Congress of the International Council of the Aeronautical Sciences (ICAS 2026) will be held on 13-18 September 2026 at the International Convention & Exhibition Centre, Sydney, Australia. The ICAS congress is a biennial event which brings together world’s aeronautics experts and the entire international scientific aerospace community to discuss, understand and compare worldwide scientific and technological advances. The 35th Congress of the International Council of the Aeronautical Sciences (ICAS 2026) will be held on 13-18 September 2026 at the International Convention & Exhibition Centre, Sydney, Australia. The ICAS congress is a biennial event which brings together world’s aeronautics experts and the entire international scientific aerospace community to discuss, understand and compare worldwide scientific and technological advances.