A translating cowl thrust reverser system with efflux management, comprising: a support structure adapted to be coupled to an aircraft propulsion engine; a transcowl comprising a front edge and movable between a first position, in which the front edge abuts the support structure, and a second position, in which an aperture is formed between the front edge and the support structure; a cowl shield mounted on the support structure and coupled to, and moveable with, the transcowl between the first position and the second position, the cowl shield comprising a front end, the cowl shield having a plurality of spaced apart cowl shield turning vanes extending from the front end of the cowl shield in a forward direction; and a single cascade structure disposed within the aperture, the single cascade structure comprising: a forward wall coupled to the support structure, a curved vane spaced apart from, and disposed aft of, the forward wall to define an airflow gap therebetween, the curved vane having a curved vane inner surface and a curved vane outer surface, the curved vane inner surface facing the forward wall, a plurality of internal turning vanes disposed within the airflow gap and spaced apart from each other, each internal turning vane coupled to, and extending between, the forward wall and the curved vane inner surface, and a plurality of external turning vanes spaced apart from each other, each external turning vane coupled to, and extending aft from, the curved vane outer surface, wherein, in the first position, each cowl shield turning vane is disposed between a different pair of external turning vanes. a support structure adapted to be coupled to an aircraft propulsion engine; a transcowl comprising a front edge and movable between a first position, in which the front edge abuts the support structure, and a second position, in which an aperture is formed between the front edge and the support structure; a cowl shield mounted on the support structure and coupled to, and moveable with, the transcowl between the first position and the second position, the cowl shield comprising a front end, the cowl shield having a plurality of spaced apart cowl shield turning vanes extending from the front end of the cowl shield in a forward direction; and a single cascade structure disposed within the aperture, the single cascade structure comprising: a forward wall coupled to the support structure, a curved vane spaced apart from, and disposed aft of, the forward wall to define an airflow gap therebetween, the curved vane having a curved vane inner surface and a curved vane outer surface, the curved vane inner surface facing the forward wall, a plurality of internal turning vanes disposed within the airflow gap and spaced apart from each other, each internal turning vane coupled to, and extending between, the forward wall and the curved vane inner surface, and a plurality of external turning vanes spaced apart from each other, each external turning vane coupled to, and extending aft from, the curved vane outer surface, a forward wall coupled to the support structure, a curved vane spaced apart from, and disposed aft of, the forward wall to define an airflow gap therebetween, the curved vane having a curved vane inner surface and a curved vane outer surface, the curved vane inner surface facing the forward wall, a plurality of internal turning vanes disposed within the airflow gap and spaced apart from each other, each internal turning vane coupled to, and extending between, the forward wall and the curved vane inner surface, and a plurality of external turning vanes spaced apart from each other, each external turning vane coupled to, and extending aft from, the curved vane outer surface, wherein, in the first position, each cowl shield turning vane is disposed between a different pair of external turning vanes. <EOS>