An engine inlet of an aircraft comprising; a flexible inlet, wherein the flexible inlet is formed of a deformable material; wherein the flexible inlet comprises an outer surface, an inner surface, and plurality of edges; whereas the plurality of edges are attachable at least partly to a fuselage skin of the aircraft and at least partly to an engine air intake duct of the aircraft; at least one mechanism; a processing unit, wherein the processing unit is configured to control the mechanism; and wherein the mechanism is configured to change at least a shape of the flexible inlet; wherein the mechanism is characterized by comprising: at least one curved head, wherein the head is in contact with the inner surface of the flexible inlet and wherein the head comprises a smooth surface; at least one arm, wherein the arm further comprises at least a first end and a second end, wherein the first end of the arm is connected pivotally to the head of the mechanism; at least one positioning system, wherein the positioning system further includes at least one control joint and a base; wherein the base of the positioning system is configured to be fixed to at least a structure of the aircraft; wherein the control joint of the positioning system is connected to the second end of the arm; wherein the control joint is configured to receive a signal from the processing unit, wherein the signal from the processing unit is a required position of the arm. a flexible inlet, wherein the flexible inlet is formed of a deformable material; wherein the flexible inlet comprises an outer surface, an inner surface, and plurality of edges; whereas the plurality of edges are attachable at least partly to a fuselage skin of the aircraft and at least partly to an engine air intake duct of the aircraft; at least one mechanism; a processing unit, wherein the processing unit is configured to control the mechanism; and wherein the mechanism is configured to change at least a shape of the flexible inlet; wherein the mechanism is characterized by comprising: at least one curved head, wherein the head is in contact with the inner surface of the flexible inlet and wherein the head comprises a smooth surface; at least one arm, wherein the arm further comprises at least a first end and a second end, wherein the first end of the arm is connected pivotally to the head of the mechanism; at least one positioning system, wherein the positioning system further includes at least one control joint and a base; wherein the base of the positioning system is configured to be fixed to at least a structure of the aircraft; wherein the control joint of the positioning system is connected to the second end of the arm; wherein the control joint is configured to receive a signal from the processing unit, wherein the signal from the processing unit is a required position of the arm. at least one curved head, wherein the head is in contact with the inner surface of the flexible inlet and wherein the head comprises a smooth surface; at least one arm, wherein the arm further comprises at least a first end and a second end, wherein the first end of the arm is connected pivotally to the head of the mechanism; at least one positioning system, wherein the positioning system further includes at least one control joint and a base; wherein the base of the positioning system is configured to be fixed to at least a structure of the aircraft; wherein the control joint of the positioning system is connected to the second end of the arm; wherein the control joint is configured to receive a signal from the processing unit, wherein the signal from the processing unit is a required position of the arm.