Deflector rudders

Details Deflector rudders Deflector rudders

1974-08-01

1976-06-08

Blix, Trygve M.

Ships

Steering mechanism

Rudders

115 12R, B63H 2506

Patent

active

039615910

ABSTRACT:
A propeller nozzle or duct in which the walls thereof terminate in two or more planes inclined symmetrically about an axis normal to the nozzle or duct centerline with one or more deflecter rudders pivotedly mounted across the opening so formed such that by swinging the rudder(s) one half of the exit area may be closed and the propeller race diverted through the remaining open area under the guidance of the rudder(s) upon which the race reacts to develop a steering force. The turning capabilities of a fixed nozzle or duct are thereby improved whilst wetted area may be reduced and propulsive efficiency increased by recovery of rotational energy otherwise lost to the wake. When used in conjunction with a pivoted steering nozzle a reverse thrust may be developed.

REFERENCES:
patent: 1344518 (1920-06-01), Rees
patent: 2996031 (1961-08-01), Easter
patent: 3001502 (1961-09-01), Stoker
patent: 3181492 (1965-05-01), Hockett
patent: 3457891 (1969-07-01), Clark et al.

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