FIELD: aviation. SUBSTANCE: biplane has top and lower wings, bearing frame on which these wings are movably mounted and stirrups for vertical motion of pilot. Biplane is provided with straps for suspending the pilot from lower wing. Each wing is filled with light gas. Bearing frame makes it possible to suspend pilot from top wing by means of struts and stirrups. Lower wing has holes where struts of frame are located. EFFECT: reduced power required for flight. 2 dwg _
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