| 摘要 |
An improved trawl door (10) is adapted for being towed through water both at shallower and at larger angles of attack. The trawl door (10) includes at least one main deflector (24, 25) having a profile (46) formed by an inner surface (48) and an outer surface (47). The profile (46) spans a chord length "C" that extends along a Chord Direction Line (83) between leading and trailing edges (12, 14) of the main deflector (24, 25). The trawl door also includes at least one leading edge slat (20, 22) at least a portion of which is located in front of the outer surface (47) of the main deflector. The trawl door (10) in one aspect is characterized by an acute angle of inclination (91, 92) between a chord line (81, 82) of the leading edge slat (20, 22) and the Chord Direction Line (83) that is at least thirty-five degrees (35°). The trawl door (10) in another aspect is characterized by having an aspect ratio of at least two to one (2.0 : 1.0). |
