FIELD: aviation; aerodynamic brake for river and seagoing vessels performing function of sail. SUBSTANCE: parachute canopy has holes above which sleeves are located. Sleeves are provided with flexible nozzles at their ends which are articulated on canopy above edge of its base. Sleeves have half-round form in section. EFFECT: lifting ability of canopy due to availability of sleeves and facilitated manufacture due to half-round form of sleeves. 3 cl, 2 dwg
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