A nacelle (10, 110) for an aircraft, comprising: an outer casing having a longitudinal axis; a thrust reverser including: a translating cowl, the outer casing and translating cowl cooperating to define an outer boundary of a bypass passage configured to surround an engine, the translating cowl movable relative to the outer casing along the longitudinal axis between a closed position and an open position, the translating cowl in the open position being axially spaced from the outer casing so as to define an opening between the translating cowl and the outer casing; and a blocking panel pivotable about a pivot connection between; a stowed position, in which the blocking panel is located radially outwardly of the bypass passage; and a pivoted position, the blocking panel in the pivoted position extending within the bypass passage adjacent the opening to direct a flow toward the opening; wherein the blocking panel is connected to the translating cowl by a sliding connection including an engagement member slidingly engaged in a track, the track having a first portion parallel to the longitudinal axis and a second portion non-parallel to the longitudinal axis; wherein motion of the translating cowl along the longitudinal axis slides the engagement member within the track, the motion of the translating cowl being performed without moving the blocking panel when the engagement member is within the first portion of the track, the motion of the translating cowl causing the blocking panel to pivot about the pivot connection when the engagement member is within the second portion of the track. an outer casing having a longitudinal axis; a thrust reverser including: a translating cowl, the outer casing and translating cowl cooperating to define an outer boundary of a bypass passage configured to surround an engine, the translating cowl movable relative to the outer casing along the longitudinal axis between a closed position and an open position, the translating cowl in the open position being axially spaced from the outer casing so as to define an opening between the translating cowl and the outer casing; and a blocking panel pivotable about a pivot connection between; a stowed position, in which the blocking panel is located radially outwardly of the bypass passage; and a pivoted position, the blocking panel in the pivoted position extending within the bypass passage adjacent the opening to direct a flow toward the opening; wherein the blocking panel is connected to the translating cowl by a sliding connection including an engagement member slidingly engaged in a track, the track having a first portion parallel to the longitudinal axis and a second portion non-parallel to the longitudinal axis; a translating cowl, the outer casing and translating cowl cooperating to define an outer boundary of a bypass passage configured to surround an engine, the translating cowl movable relative to the outer casing along the longitudinal axis between a closed position and an open position, the translating cowl in the open position being axially spaced from the outer casing so as to define an opening between the translating cowl and the outer casing; and a blocking panel pivotable about a pivot connection between; a stowed position, in which the blocking panel is located radially outwardly of the bypass passage; and a pivoted position, the blocking panel in the pivoted position extending within the bypass passage adjacent the opening to direct a flow toward the opening; a stowed position, in which the blocking panel is located radially outwardly of the bypass passage; and a pivoted position, the blocking panel in the pivoted position extending within the bypass passage adjacent the opening to direct a flow toward the opening; wherein the blocking panel is connected to the translating cowl by a sliding connection including an engagement member slidingly engaged in a track, the track having a first portion parallel to the longitudinal axis and a second portion non-parallel to the longitudinal axis; wherein motion of the translating cowl along the longitudinal axis slides the engagement member within the track, the motion of the translating cowl being performed without moving the blocking panel when the engagement member is within the first portion of the track, the motion of the translating cowl causing the blocking panel to pivot about the pivot connection when the engagement member is within the second portion of the track.