A multi-channel particle separator for gas turbine engines, comprising: a plurality of vanes, each vane spaced apart from at least one other adjacent vane to define a flow channel, each vane comprising: a leading edge and a trailing edge, a first side wall extending between the leading edge and the trailing edge; a second side wall spaced apart from the first side wall, the second side wall extending from the leading edge toward the trailing edge, and characterized by: a splitter rotationally coupled to the trailing edge and extending toward the leading edge, the splitter spaced apart from the first side wall to define a scavenge volume and rotatable between (i) an extended position, in which the splitter is spaced apart from the second side wall to place the scavenge volume in fluid communication with the flow channel, and (ii) a retracted position, in which the splitter engages the second side wall to fluidly isolate the scavenge volume from the flow channel; at least one actuator coupled to each splitter, the at least one actuator adapted to receive actuator control signals and configured, in response thereto, to move each splitter to either the extended position or the retracted position; a control coupled to the at least one actuator and configured to supply the actuator control signals thereto. a plurality of vanes, each vane spaced apart from at least one other adjacent vane to define a flow channel, each vane comprising: a leading edge and a trailing edge, a first side wall extending between the leading edge and the trailing edge; a second side wall spaced apart from the first side wall, the second side wall extending from the leading edge toward the trailing edge, and characterized by: a splitter rotationally coupled to the trailing edge and extending toward the leading edge, the splitter spaced apart from the first side wall to define a scavenge volume and rotatable between (i) an extended position, in which the splitter is spaced apart from the second side wall to place the scavenge volume in fluid communication with the flow channel, and (ii) a retracted position, in which the splitter engages the second side wall to fluidly isolate the scavenge volume from the flow channel; a leading edge and a trailing edge, a first side wall extending between the leading edge and the trailing edge; a second side wall spaced apart from the first side wall, the second side wall extending from the leading edge toward the trailing edge, and characterized by: a splitter rotationally coupled to the trailing edge and extending toward the leading edge, the splitter spaced apart from the first side wall to define a scavenge volume and rotatable between (i) an extended position, in which the splitter is spaced apart from the second side wall to place the scavenge volume in fluid communication with the flow channel, and (ii) a retracted position, in which the splitter engages the second side wall to fluidly isolate the scavenge volume from the flow channel; at least one actuator coupled to each splitter, the at least one actuator adapted to receive actuator control signals and configured, in response thereto, to move each splitter to either the extended position or the retracted position; a control coupled to the at least one actuator and configured to supply the actuator control signals thereto.