The invention is an annular lift fan system for a VTOL type aircraft. In detail, the invention comprises an annular duct (16), a lift fan set (3), engines (6, 7), a central fuselage (1), and an outer wing (5). The lift fan set (3) is mounted in the annular duct (16) and powered by the engines (6, 7) incorporated in the outer wing (5). The annular duct is open for the lift fan set to provide high lift efficiency in VTOL and transition mode, and is closed off by shutters and louvers to provide aerodynamic lift and reduce drag in cruise mode.
ANNULAR LIFT FAN VTOL AIRCRAFT
2018-07-05
Patent
Elektronische Ressource
Englisch
IPC: | B64C AEROPLANES , Flugzeuge |
NTRS | 1977
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