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Publication of FR1145839ApublicationCriticalpatent/FR1145839A/fr
B64C39/06—Aircraft not otherwise provided for having disc- or ring-shaped wings
B64C39/062—Aircraft not otherwise provided for having disc- or ring-shaped wings having annular wings
B—PERFORMING OPERATIONS; TRANSPORTING
B64—AIRCRAFT; AVIATION; COSMONAUTICS
B64C—AEROPLANES; HELICOPTERS
B64C29/00—Aircraft capable of landing or taking-off vertically, e.g. vertical take-off and landing [VTOL] aircraft
B64C29/02—Aircraft capable of landing or taking-off vertically, e.g. vertical take-off and landing [VTOL] aircraft having its flight directional axis vertical when grounded
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Aviation & Aerospace Engineering
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FR1145839D1956-03-161956-03-16Perfectionnements apportés aux aérodynes, notamment à ceux à aile annulaire
ExpiredFR1145839A
(fr)